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ISO-19139_che zu DCAT-AP CH

ISO-19139_che zu DCAT-AP CH

Transformation des Geometadatenstandards für opendata.swiss

Um Geometadaten auf opendata.swiss publizieren zu können, muss der Geometadatenstandard ISO-19139_che auf den von opendata.swiss genutzten DCAT-AP CH abgebildet werden. Diese Dokumentation beschreibt die Standard-Transformation von ISO-19139_che nach DCAT-AP CH, so wie sie für das Harvesting von Geometadaten auf opendata.swiss benötigt wird. Es geht dabei um die XML-Serialisierung durch XPath .

Diese Dokumentation ist aktuell nur in Englisch verfügbar.

This documentation describes the mapping from ISO-19139_che to DCAT-AP CH. ISO-19139_che is a standard used by geocat.ch, a data source from which opendata.swiss harvests datasets.

In this documentation we focus on the XML serialization of ISO-19139_che and therefore describe the mapping in form of XPath (if not noted differently).

Example-Catalog

Example XML serialization of an ISO-19139_che dataset

Overview

Geocat Distributions //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource are mapped either to the dcat:Dataset class or to the dcat:Distribution class, depending on .//gmd:protocol

The „Mapped from“ column in the table gives just a hint on where the metadata is taken from. Please see the field descriptions for the actual mapping.

Mapping to dcat:Dataset

Mappings to dcat:Dataset
DCAT property	Mapped from	Usage Notes
dct:title	//gmd:identificationInfo//gmd:citation//gmd:title	multilingual
dct:description	//gmd:identificationInfo//gmd:abstract	multilingual
dct:publisher	//gmd:identificationInfo//gmd:pointOfContact
dcat:contactPoint	//gmd:identificationInfo//gmd:pointOfContact or //gmd:contact
dct:identifier	//gmd:fileIdentifier
dcat:Distribution	//gmd:distributionInfo
dct:issued	//gmd:identificationInfo//gmd:citation//gmd:CI_Date
modified	//gmd:identificationInfo//gmd:citation//gmd:CI_Date
dcat:theme	//gmd:identificationInfo//gmd:topicCategory
dcat:landingPage	//gmd:distributionInfo	depends on gmd:protocol
dct:relation	//gmd:distributionInfo	depends on gmd:protocol
dct:language	//gmd:identificationInfo//gmd:language
dcat:keyword	//gmd:identificationInfo//gmd:descriptiveKeywords	multilingual
dct:spatial	//gmd:identificationInfo//gmd:extent
dct:coverage		mapping not implemented
dct:temporal	//gmd:identificationInfo//gmd:extent//gmd:temporalElement
accrual periodicity	//gmd:identificationInfo//che:CHE_MD_MaintenanceInformation
qualified relation	//gmd:identificationInfo//gmd:aggregationInfo
documentation	//gmd:distributionInfo/gmd:MD_Distribution	new property, depends on gmd:protocol
conforms to	//gmd:contentInfo/che:CHE_MD_FeatureCatalogueDescription/che:dataModel	new property

Mapping to dcat:Distribution

Mappings of //gmd:DistributionInfo to dcat:Distribution
DCAT property	Mapped from	Usage Notes
dct:issued	//gmd:identificationInfo//gmd:citation//gmd:CI_Date	taken from the Dataset
dcat:accessURL	.//gmd:linkage
dct:rights	//gmd:resourceConstraints	derived for the dataset
dct:title	.//gmd:name	in combination with protocol
dct:description	.//gmd:description
dcat:byteSize		mapping not implemented
media type	.//gmd:protocol	derived from the protocol
dct:format	.//gmd:protocol	derived from the protocol
dct:language	.//gmd:linkage//che:LocalisedURL	depends on localized urls
dct:modified	//gmd:identificationInfo//gmd:citation//gmd:CI_Date	taken from the Dataset
dct:license		mapping not implemented
dct:identifier		mapping not implemented
download url	.//gmd:linkage	download protocols only
coverage		mapping not implemented

Dataset

`//gmd:fileIdentifier` to `dct:identifier`

DCAT: dct:identifier
XPATH: //gmd:fileIdentifier
Value: gco:CharacterString/text()
Usage Notes: the internal id of the dataset is taken from the XPath //gmd:fileIdentifier and combined with the slug of the publishing organization to form the value of dct:identifier, with the format <id>@<organization-slug>.

ISO-19139_che XPath for dct:identifier

//gmd:fileIdentifier/gco:CharacterString/text()

Example for geocat mapping to dct:identifier

getting the internal id of a dataset from //gmd:fileIdentifier

<gmd:fileIdentifier>
    <gco:CharacterString>93814e81-2466-4690-b54d-c1d958f1c3b8</gco:CharacterString>
</gmd:fileIdentifier>

`/gmd:identificationInfo//gmd:citation//gmd:title` to `dct:title`

DCAT: dct:title
XPATH: //gmd:identificationInfo//gmd:citation//gmd:title
Value: .//gmd:textGroup/gmd:LocalisedCharacterString[@locale="<lang code>"]/text()
Fallback-Value: .//gmd:CharacterString/text()
Usage Notes: <lang code> is expected as DE, EN, FR, IT. In case the localized strings are not there the Fallback will be used for all 4 languages

ISO-19139_che XPath for dct:title

//gmd:identificationInfo//gmd:citation//gmd:title//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#DE]/text()
//gmd:identificationInfo//gmd:citation//gmd:title//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#EN]/text()
//gmd:identificationInfo//gmd:citation//gmd:title//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#FR]/text()
//gmd:identificationInfo//gmd:citation//gmd:title//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#IT]/text()
//gmd:identificationInfo//gmd:citation//gmd:title//gco:CharacterString/text()

Example for geocat-mapping to dct:title

Example of getting dct:title. Only four languages are taken: DE, EN, FR, IT.

<gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
  <gco:CharacterString>Lärmbelastung durch Eisenbahnverkehr (Lr_Nacht)</gco:CharacterString>
  <gmd:PT_FreeText>
    <gmd:textGroup>
      <gmd:LocalisedCharacterString locale="#FR">
        Exposition au bruit du trafic ferroviaire (Lr_nuit)
      </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
      <gmd:LocalisedCharacterString locale="#DE">
        Lärmbelastung durch Eisenbahnverkehr (Lr_Nacht)
      </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
      <gmd:LocalisedCharacterString locale="#EN">
        Nighttime railway noise exposure
      </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
      <gmd:LocalisedCharacterString locale="#IT">
        Esposizione al rumore del traffico ferroviario (Lr_notte)
      </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
      <gmd:LocalisedCharacterString locale="#RM">
        Grevezza da canera tras il traffic da viafier durant la notg
      </gmd:LocalisedCharacterString>
    </gmd:textGroup>
  </gmd:PT_FreeText>
</gmd:title>

`/gmd:identificationInfo//gmd:abstract` to `dct:description`

DCAT: dct:description
XPATH: //gmd:identificationInfo//gmd:abstract
Value: .//gmd:textGroup/gmd:LocalisedCharacterString[@locale="<lang code>"]/text()
Fallback-Value: .//gmd:CharacterString/text()
Usage Notes: <lang code> is expected as DE, EN, FR, IT. In case the localized strings are not there the Fallback will be used for all 4 languages

ISO-19139_che XPath for dct:description

//gmd:identificationInfo//gmd:abstract//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#DE]/text()
//gmd:identificationInfo//gmd:abstract//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#EN]/text()
//gmd:identificationInfo//gmd:abstract//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#FR]/text()
//gmd:identificationInfo//gmd:abstract//gmd:textGroup/gmd:LocalisedCharacterString[@LOCALE=#IT]/text()
//gmd:identificationInfo//gmd:abstract//gmd:CharacterString/text()

Example for geocat-mapping to dct:description

Example of getting dct:description: only 4 languages are taken: DE, EN, FR, IT

<gmd:abstract xsi:type="gmd:PT_FreeText_PropertyType">
    <gco:CharacterString>Dans le cas de travaux de terrain réalisés pour la mensuration officielle, un ajustage local
        doit systématiquement être exécuté sauf si la preuve peut être apporté qu’il peut y être renoncé. Un tel
        ajustage local est superflu dans les zones où les tensions sont négligeables parce que la précision géométrique
        satisfait à des critères de qualité très élevés. Dans la pratique quotidienne, la connaissance des zones où les
        tensions sont négligeables facilite l’emploi des méthodes de mesure basées sur des satellites, en particulier le
        recours à des services de positionnement.
    </gco:CharacterString>
    <gmd:PT_FreeText>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#FR">Dans le cas de travaux de terrain réalisés pour la mensuration
                officielle, un ajustage local doit systématiquement être exécuté sauf si la preuve peut être apporté
                qu’il peut y être renoncé. Un tel ajustage local est superflu dans les zones où les tensions sont
                négligeables parce que la précision géométrique satisfait à des critères de qualité très élevés. Dans la
                pratique quotidienne, la connaissance des zones où les tensions sont négligeables facilite l’emploi des
                méthodes de mesure basées sur des satellites, en particulier le recours à des services de
                positionnement.
            </gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#DE">Bei Feldarbeiten in der amtlichen Vermessung muss jeweils eine
                lokale Einpassung durchgeführt werden oder zumindest der Nachweis erbracht werden, dass auf eine solche
                verzichtet werden kann. In spannungsarmen Gebieten erübrigt sich eine lokale Einpassung, weil die
                geometrische Genauigkeit erhöhten Qualitätskriterien entspricht. In der praktischen Anwendung
                erleichtert die Kenntnis solcher spannungsarmen Gebiete die Arbeiten mit satellitengestützten
                Messmethoden, insbesondere mit Positionierungsdiensten wie zum Beispiel swipos.
            </gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#IT">Nel caso di lavori sul campo eseguiti per la misurazione
                ufficiale occorre effettuare di volta in volta un aggiustamento locale o quanto meno fornire la prova
                che è possibile rinunciare a tale aggiustamento. Nelle zone di tensioni trascurabili un aggiustamento
                locale diviene superfluo, perché l'esattezza geometrica soddisfa criteri di qualità superiori.
                Nell'applicazione pratica, la conoscenza di queste zone di tensioni trascurabili facilita il lavoro con
                i metodi di misurazione satellitari e in particolare con servizi di posizionamento quali ad esempio
                swipos.
            </gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#EN">During fieldwork in the official cadastral survey, a local
                adaptation must be made or proof must be provided that this is not needed. In low distortion areas, a
                local adaptation is not necessary, because the geometric accuracy complies with higher quality criteria.
                In practical applications, knowledge of low distortion areas makes working with satellite:based
                measuring methods easier, in particular with positioning services such as swipos.
            </gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#RM">En cas da lavurs champestras che vegnan fatgas per la mesiraziun
                uffiziala sto vegnir fatga mintgamai in'adattaziun locala u almain vegnir furnida la cumprova ch'ins po
                renunziar ad ina tala. En territoris cun tensiuns negligiblas n'è in'adattaziun locala betg necessaria,
                perquai che la precisiun geometrica correspunda a criteris da qualitad fitg auts. En la pratica
                quotidiana facilitescha l'enconuschientscha da tals territoris cun tensiuns negligiblas l'applicaziun da
                metodas da mesiraziun per satellit, cunzunt tras servetschs da posiziunament sco per exempel swipos.
            </gmd:LocalisedCharacterString>
        </gmd:textGroup>
    </gmd:PT_FreeText>
</gmd:abstract>

`gmd:pointOfContact` or `//gmd:contact` to `dct:publisher`

DCAT

dct:publisher

XPATH

//gmd:identificationInfo/gmd:pointOfContact or //gmd:contact//che:CHE_CI_ResponsibleParty (fallback value)

Filter

.//gmd:CI_RoleCode/@codeListValue

Value

.//gmd:organisationName/gco:CharacterString/text()

Usage Notes

The publisher consists of a name and a uri. Currently only the publisher name is mapped from the geocat dataset: For the uri the url of the organization that the dataset belongs on opendata.swiss is taken: https://opendata.swiss/de/organization.

gmd:contact is the metadata contact registered in geocat.ch and is only used as a fallback value.

ISO-19139_che XPath for dct:publisher: the first is taken in the following order:

//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "publisher"]//gmd:organisationName/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "owner"]//gmd:organisationName/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "pointOfContact"]//gmd:organisationName/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "distributor"]//gmd:organisationName/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "custodian"]//gmd:organisationName/gco:CharacterString
//gmd:contact//che:CHE_CI_ResponsibleParty//gmd:organisationName/gco:CharacterString

Example for geocat mapping to dct:publisher

The role publisher is taken in this example. Note that the localized string would not be considered in this mapping

<gmd:pointOfContact>
    <gmd:CI_ResponsibleParty>
        <gmd:organisationName xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>Geoinformationszentrum (GIS) Stadt Luzern</gco:CharacterString>
            <gmd:PT_FreeText>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#DE">Geoinformationszentrum (GIS) Stadt
                        Luzern
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
            </gmd:PT_FreeText>
        </gmd:organisationName>
        <gmd:role>
            <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_RoleCode"
                             codeListValue="publisher"/>
        </gmd:role>
    </gmd:CI_ResponsibleParty>
</gmd:pointOfContact>

`gmd:pointOfContact or //gmd:contact` to `dct:contactPoint`

DCAT

dcat:contactPoint

XPATH

//gmd:identificationInfo/gmd:pointOfContact or //gmd:contact (fallback value)

Value

gmd:electronicMailAddress/gco:CharacterString

Usage Notes

Only one contact email is taken. A corresponding name is not taken.

gmd:contact is the metadata contact registered in geocat.ch and is only used as a fallback value.

ISO-19139_che XPath for dcat:contactPoint: the first is taken in the following order

//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "pointOfContact"]//gmd:address//gmd:electronicMailAddress/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "owner"]//gmd:address//gmd:electronicMailAddress/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "publisher"]//gmd:address//gmd:electronicMailAddress/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "distributor"]//gmd:address//gmd:electronicMailAddress/gco:CharacterString
//gmd:identificationInfo//gmd:pointOfContact[.//gmd:CI_RoleCode/@codeListValue = "custodian"]//gmd:address//gmd:electronicMailAddress/gco:CharacterString
//gmd:contact//che:CHE_CI_ResponsibleParty//gmd:address//gmd:electronicMailAddress/gco:CharacterString

Example for geocat mapping to dcat:contactPoint

//gmd:contact the role „pointOfContact“ is taken for dcat:contactPoint

<gmd:contact xlink:show="embed">
    <che:CHE_CI_ResponsibleParty xmlns:geonet="http://www.fao.org/geonetwork" gco:isoType="gmd:CI_ResponsibleParty">
        <gmd:organisationName xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>Bundesamt für Raumentwicklung</gco:CharacterString>
            <gmd:PT_FreeText>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#DE">Bundesamt für Raumentwicklung
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#FR">Office fédéral du développement territorial
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#IT">Ufficio federale dello sviluppo territoriale
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#EN">Federal Office for Spatial Development
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#RM">Bundesamt für Raumentwicklung
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
            </gmd:PT_FreeText>
        </gmd:organisationName>
        <gmd:contactInfo>
            <gmd:CI_Contact>
                <gmd:phone>
                    <che:CHE_CI_Telephone gco:isoType="gmd:CI_Telephone">
                        <che:directNumber>
                            <gco:CharacterString>+41 58 462 01 43</gco:CharacterString>
                        </che:directNumber>
                    </che:CHE_CI_Telephone>
                </gmd:phone>
                <gmd:address>
                    <che:CHE_CI_Address gco:isoType="gmd:CI_Address">
                        <gmd:city>
                            <gco:CharacterString>Ittigen</gco:CharacterString>
                        </gmd:city>
                        <gmd:postalCode>
                            <gco:CharacterString>3063</gco:CharacterString>
                        </gmd:postalCode>
                        <gmd:country>
                            <gco:CharacterString>CH</gco:CharacterString>
                        </gmd:country>
                        <gmd:electronicMailAddress>
                            <gco:CharacterString>rolf.giezendanner@are.admin.ch</gco:CharacterString>
                        </gmd:electronicMailAddress>
                        <che:streetName>
                            <gco:CharacterString>Worblentalstrasse</gco:CharacterString>
                        </che:streetName>
                        <che:streetNumber>
                            <gco:CharacterString>66</gco:CharacterString>
                        </che:streetNumber>
                    </che:CHE_CI_Address>
                </gmd:address>
                <gmd:onlineResource>
                    <gmd:CI_OnlineResource>
                        <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
                            <gmd:URL>http://www.are.admin.ch</gmd:URL>
                            <che:PT_FreeURL>
                                <che:URLGroup>
                                    <che:LocalisedURL locale="#DE">http://www.are.admin.ch</che:LocalisedURL>
                                </che:URLGroup>
                                <che:URLGroup>
                                    <che:LocalisedURL locale="#FR">http://www.are.admin.ch</che:LocalisedURL>
                                </che:URLGroup>
                                <che:URLGroup>
                                    <che:LocalisedURL locale="#IT">http://www.are.admin.ch</che:LocalisedURL>
                                </che:URLGroup>
                                <che:URLGroup>
                                    <che:LocalisedURL locale="#EN">http://www.are.admin.ch</che:LocalisedURL>
                                </che:URLGroup>
                                <che:URLGroup>
                                    <che:LocalisedURL locale="#RM">http://www.are.admin.ch</che:LocalisedURL>
                                </che:URLGroup>
                            </che:PT_FreeURL>
                        </gmd:linkage>
                        <gmd:protocol>
                            <gco:CharacterString>text/html</gco:CharacterString>
                        </gmd:protocol>
                    </gmd:CI_OnlineResource>
                </gmd:onlineResource>
            </gmd:CI_Contact>
        </gmd:contactInfo>
        <gmd:role>
            <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_RoleCode"
                             codeListValue="pointOfContact"/>
        </gmd:role>
        <che:individualFirstName>
            <gco:CharacterString>Rolf</gco:CharacterString>
        </che:individualFirstName>
        <che:individualLastName>
            <gco:CharacterString>Giezendanner</gco:CharacterString>
        </che:individualLastName>
        <che:organisationAcronym xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>ARE</gco:CharacterString>
            <gmd:PT_FreeText>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#DE">ARE</gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#FR">ARE</gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#IT">ARE</gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#EN">ARE</gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#RM">ARE</gmd:LocalisedCharacterString>
                </gmd:textGroup>
            </gmd:PT_FreeText>
        </che:organisationAcronym>
    </che:CHE_CI_ResponsibleParty>
</gmd:contact>

`//gmd:distributionInfo/gmd:MD_Distribution` to `dcat:distribution`

DCAT: dcat:distribution
XPATH: //gmd:distributionInfo/gmd:MD_Distribution[//gmd:transferOptions//gmd:CI_OnlineResource
protocol: //gmd:distributionInfo/gmd:MD_Distribution[//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol
Mapping: The mapping depends on the protocol. If the Protocol starts in the following way it is mapped to a dcat:Distribution: WWW:DOWNLOAD, OGC:WMTS, OGC:WFS, OGC:WMS, LINKED:DATA, ESRI:REST, MAP:Preview
Usage Notes: Only the above geocat Distributions will be mapped to dcat:Distribution. There are other protocols that will be mapped to dcat:landingPage and dct:relation.

ISO-19139_che XPath for getting the protocols for the geocat distributions

//gmd:distributionInfo/gmd:MD_Distribution[//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol/gco:CharacterString/text()

Example of getting the protocols for dcat:distribution

Getting all distribution protocols for a dataset with //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

<gmd:protocol>
    <gco:CharacterString>ESRI:REST</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>OGC:WMS</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>WWW:DOWNLOAD:INTERLIS</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>MAP:Preview</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>WWW:DOWNLOAD:APP</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>WWW:LINK</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>WWW:DOWNLOAD:URL</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>CHTOPO:specialised:geoportal</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>OGC:WFS</gco:CharacterString>
</gmd:protocol>
<gmd:protocol>
    <gco:CharacterString>LINKED:DATA</gco:CharacterString>
</gmd:protocol>

`//gmd:identificationInfo//gmd:citation//gmd:CI_Date` to `dct:issued`

DCAT: dct:issued
XPATH: //gmd:identificationInfo//gmd:citation//gmd:CI_Date
Role: publication or creation or revision
Value: .//gco:Date or .//gco:DateTime
Usage Notes: This also serves as dct:issued for dcat:Distribution

The first found date is taken in the order defined below:

//gmd:identificationInfo//gmd:citation//gmd:CI_Date[.//gmd:CI_DateTypeCode/@codeListValue = "publication"]//gco:Date or gco:DateTime
//gmd:identificationInfo//gmd:citation//gmd:CI_Date[.//gmd:CI_DateTypeCode/@codeListValue = "creation"]//gco:Date or gco:DateTime
//gmd:identificationInfo//gmd:citation//gmd:CI_Date[.//gmd:CI_DateTypeCode/@codeListValue = "revision"]//gco:Date or gco:DateTime

Example for geocat mapping to dct:issued

getting the „creation“ date from //gmd:identificationInfo//gmd:citation//gmd:CI_Date to map onto dct:issued

<gmd:CI_Date>
    <gmd:date>
        <gco:DateTime>2020:10:21T00:00:00</gco:DateTime>
    </gmd:date>
    <gmd:dateType>
        <gmd:CI_DateTypeCode codeListValue="revision"
                             codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_DateTypeCode"/>
    </gmd:dateType>
</gmd:CI_Date>
<gmd:CI_Date>
    <gmd:date>
        <gco:DateTime>2011:01:01T00:00:00</gco:DateTime>
    </gmd:date>
    <gmd:dateType>
        <gmd:CI_DateTypeCode
            codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_DateTypeCode"
            codeListValue="creation"/>
    </gmd:dateType>
</gmd:CI_Date>

`//gmd:identificationInfo//gmd:citation//gmd:CI_Date` to `dct:modified`

DCAT: dct:modified
XPATH: //gmd:identificationInfo//gmd:citation//gmd:CI_Date
Role: revision
Value: //gco:Date or //gco:DateTime
Usage Notes: This also serves as dct:modified for dcat:Distribution

The date for the role revision is taken

//gmd:identificationInfo//gmd:citation//gmd:CI_Date[.//gmd:CI_DateTypeCode/@codeListValue = "revision"]//gco:Date or gco:DateTime

Example for geocat mapping to dct:modified

getting the „revision“ date from //gmd:identificationInfo//gmd:citation//gmd:CI_Date to map onto dct:modified

<gmd:CI_Date>
    <gmd:date>
        <gco:DateTime>2020:10:21T00:00:00</gco:DateTime>
    </gmd:date>
    <gmd:dateType>
        <gmd:CI_DateTypeCode codeListValue="revision"
                             codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_DateTypeCode"/>
    </gmd:dateType>
</gmd:CI_Date>
<gmd:CI_Date>
    <gmd:date>
        <gco:DateTime>2011:01:01T00:00:00</gco:DateTime>
    </gmd:date>
    <gmd:dateType>
        <gmd:CI_DateTypeCode
            codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_DateTypeCode"
            codeListValue="creation"/>
    </gmd:dateType>
</gmd:CI_Date>

`//gmd:identificationInfo//gmd:topicCategory/` to `dcat:theme`

DCAT: dct:theme
XPATH: //gmd:identificationInfo//gmd:topicCategory/
Mapping of values: Geocat topicCategory values are mapped to themes from the DCAT-AP CH themes vocabulary: in rdf/xml in turtle For details of the mapping, see below.

getting category with XPATH

//gmd:identificationInfo//gmd:topicCategory/gmd:MD_TopicCategoryCode

Mapping of topicCategory to themes

swisstopo_to_ogdch_group_mapping = {
    'imageryBaseMapsEarthCover': ['geography', 'territory'],
    'imageryBaseMapsEarthCover_BaseMaps': ['geography', 'territory'],
    'imageryBaseMapsEarthCover_EarthCover': ['geography', 'territory'],
    'imageryBaseMapsEarthCover_Imagery': ['geography', 'territory'],
    'location': ['geography', 'territory'],
    'elevation': ['geography', 'territory'],
    'boundaries': ['geography', 'territory'],
    'planningCadastre': ['geography', 'territory'],
    'planningCadastre_Planning': ['geography', 'territory'],
    'planningCadastre_Cadastre': ['geography', 'territory'],
    'geoscientificInformation': ['geography', 'territory'],
    'geoscientificInformation_Geology': ['geography', 'territory'],
    'geoscientificInformation_Soils': ['geography', 'territory'],
    'geoscientificInformation_NaturalHazards': ['geography', 'territory'],
    'biota': ['geography', 'territory', 'agriculture'],
    'oceans': ['geography', 'territory'],
    'inlandWaters': ['geography', 'territory'],
    'climatologyMeteorologyAtmosphere': ['geography', 'territory'],
    'environment': ['geography', 'territory'],
    'environment_EnvironmentalProtection': ['geography', 'territory'],
    'environment_NatureProtection': ['geography', 'territory'],
    'society': ['geography', 'culture', 'population'],
    'health': ['geography', 'health'],
    'structure': ['geography', 'construction'],
    'transportation': ['geography', 'mobility'],
    'utilitiesCommunication': ['geography', 'territory', 'energy', 'culture'],
    'utilitiesCommunication_Energy': ['geography', 'energy', 'territory'],
    'utilitiesCommunication_Utilities': ['geography', 'territory'],
    'utilitiesCommunication_Communication': ['geography', 'culture'],
    'intelligenceMilitary': ['geography', 'public-order'],
    'farming': ['geography', 'agriculture'],
    'economy': ['geography', 'work', 'national-economy'],
}

Example for geocat mapping to dcat:theme

Example of getting dcat:theme from gmd with ISO-19139_che XPath

<gmd:topicCategory>
    <gmd:MD_TopicCategoryCode>planningCadastre</gmd:MD_TopicCategoryCode>
</gmd:topicCategory>
<gmd:topicCategory>
    <gmd:MD_TopicCategoryCode>planningCadastre_Planning</gmd:MD_TopicCategoryCode>
</gmd:topicCategory>

`//gmd:identificationInfo//gmd:language` to `dct:language`

DCAT: dct:language
XPATH: //gmd:identificationInfo//gmd:language
Value: gmd:LanguageCode
Usage Notes: only the languages German, French, Italian and English are mapped

ISO-19139_che XPath for dct:language

//gmd:identificationInfo//gmd:language/gmd:LanguageCode

Mapping of the language code from a 3 letter code to 2 letter code

language_mapping = {
    'ger': 'de',
    'fra': 'fr',
    'fre': 'fr',
    'eng': 'en',
    'ita': 'it',
}

Example for geocat mapping to dct:language

The language code is mapped from a 3 letter code to a 2 letter code

<gmd:language>
    <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639:2/" codeListValue="ger"/>
</gmd:language>
<gmd:language>
    <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639:2/" codeListValue="fre"/>
</gmd:language>

`//gmd:distributionInfo/gmd:MD_Distribution` to `dct:landing-page`

DCAT: dcat:landingPage
XPATH: //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource
Protocol: WWW:LINK, WWW:LINK-1.0-http--link
Value: .//gmd:linkage/gmd:URL/text()
Fallback-Value: './/che:LocalisedURL for any language
Usage Notes: The protocol WWW:LINK-1.0-http--link is deprecated, please use WWW:LINK instead

ISO-19139_che XPath for geocat distribution

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource

ISO-19139_che XPath for distribution protocol

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

Example for geocat mapping to dcat:landingPage

Mapping of the landing page from the first resource with protocol WWW:LINK

<gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://swisstopo.admin.ch</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>WWW:LINK</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Landing Page</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">Landing Page</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString/>
    </gmd:description>
    <gmd:function>
        <gmd:CI_OnLineFunctionCode
            codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_OnLineFunctionCode"
            codeListValue="information"/>
    </gmd:function>
</gmd:CI_OnlineResource>

`//gmd:distributionInfo/gmd:MD_Distribution` to `dct:relation`

DCAT: dct:relation
XPATH: //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource
Protocol: WWW:LINK, CHTOPO:specialised-geoportal, WWW:LINK-1.0-http--link
Value: For the url: .//gmd:linkage/gmd:URL/text(); for the text: .//gmd:description
Fallback-Value: For the url: .//che:LocalisedURL for any language; for the text: the url is used as a fallback
Usage Notes: The protocol WWW:LINK-1.0-http--link is deprecated, please use WWW:LINK instead The first WWWW:LINK is taken as dcat:landingPage, all further WWW-LINK Resources are added to dct:relation

ISO-19139_che XPath for geocat distribution`

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource

ISO-19139_che XPath for distribution protocol

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

Example for geocat mapping to dct:relation

Example adding a resource of protocol „CHTOPO:specialised:geoportal“ to dct:relation

 <gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://map.geo.admin.ch</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://map.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://map.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://map.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://map.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>CHTOPO:specialised:geoportal</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Geoportal map.geo.admin.ch</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">Geoportal map.geo.admin.ch</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString/>
    </gmd:description>
 </gmd:CI_OnlineResource>

`//gmd:identificationInfo//gmd:descriptiveKeywords` to `dcat:keyword`

DCAT: dcat:keyword
XPATH: //gmd:identificationInfo//gmd:descriptiveKeywords//gmd:keyword
Value: //gmd:textGroup//gmd:LocalisedCharacterString
Usage Notes: all keywords with the Locale #DE, #FR, #EN, #IT are taken. The keyword opendata.swiss is not taken: it serves to mark which datasets should be imported to opendata.swiss

ISO-19139_che XPath for dcat:keyword

//gmd:identificationInfo//gmd:descriptiveKeywords//gmd:keyword//gmd:textGroup//gmd:LocalisedCharacterString

Example for geocat mapping to dcat:keyword

Note that the keyword opendata.swiss is not imported

<gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
    <gco:CharacterString>Bergwirtschaft</gco:CharacterString>
    <gmd:PT_FreeText>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#DE">Bergwirtschaft</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#FR">aménagement de la montagne</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#IT">sfruttamento razionale della montagna
            </gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#EN">mountain management</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#RM"/>
        </gmd:textGroup>
    </gmd:PT_FreeText>
</gmd:keyword>
<gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
<gco:CharacterString>opendata.swiss</gco:CharacterString>
<gmd:PT_FreeText>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#DE">opendata.swiss</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#FR">opendata.swiss</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#IT">opendata.swiss</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#EN">opendata.swiss</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#RM">opendata.swiss</gmd:LocalisedCharacterString>
    </gmd:textGroup>
</gmd:PT_FreeText>
</gmd:keyword>
<gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
<gco:CharacterString>Alpwirtschaft</gco:CharacterString>
<gmd:PT_FreeText>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#DE">Alpwirtschaft</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#FR">économie alpestre</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#IT">economia alpestre</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#EN">alpine economy</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#RM"/>
    </gmd:textGroup>
</gmd:PT_FreeText>
</gmd:keyword>
<gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
<gco:CharacterString>Bewirtschaftungsgebiete/Schutzgebiete/geregelte Gebiete und Berichterstattungseinheiten
</gco:CharacterString>
<gmd:PT_FreeText>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#DE">Bewirtschaftungsgebiete/Schutzgebiete/geregelte Gebiete und
            Berichterstattungseinheiten
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#FR">Zones de gestion, de restriction ou de réglementation et unités de
            déclaration
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#IT">Zone sottoposte a gestione/limitazioni/regolamentazione e unità con
            obbligo di comunicare dati
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#EN">Area management/restriction/regulation zones and reporting units
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#RM"/>
    </gmd:textGroup>
</gmd:PT_FreeText>
</gmd:keyword>
<gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
<gco:CharacterString>Versorgungswirtschaft und staatliche Dienste</gco:CharacterString>
<gmd:PT_FreeText>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#DE">Versorgungswirtschaft und staatliche Dienste
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#FR">Services d'utilité publique et services publics
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#IT">Servizi di pubblica utilità e servizi amministrativi
        </gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#EN">Utility and governmental services</gmd:LocalisedCharacterString>
    </gmd:textGroup>
    <gmd:textGroup>
        <gmd:LocalisedCharacterString locale="#RM"/>
    </gmd:textGroup>
</gmd:PT_FreeText>
</gmd:keyword>

`//gmd:identificationInfo//gmd:extent//gmd:description` to `dct:spatial`

DCAT: dct:spatial
XPATH: //gmd:identificationInfo//gmd:extent//gmd:description
Value: ./gco:CharacterString/text()

ISO-19139_che XPath for dacat

//gmd:identificationInfo//gmd:extent//gmd:description/gco:CharacterString/text()

Example for geocat mapping to dct:spatial

The general character string is currently taken

<gmd:description xsi:type="gmd:PT_FreeText_PropertyType">
    <gco:CharacterString>Schweiz</gco:CharacterString>
    <gmd:PT_FreeText>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#DE">Schweiz</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#FR">Schweiz</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#IT">Schweiz</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#EN">Schweiz</gmd:LocalisedCharacterString>
        </gmd:textGroup>
        <gmd:textGroup>
            <gmd:LocalisedCharacterString locale="#RM">Schweiz</gmd:LocalisedCharacterString>
        </gmd:textGroup>
    </gmd:PT_FreeText>
</gmd:description>

`//gmd:identificationInfo//gmd:extent//gmd:temporalElement` to `dct:temporal`

DCAT: dct:temporal
XPATH: //gmd:identificationInfo//gmd:extent//gmd:temporalElement
Value: //gml:TimePeriod/gml:beginPosition, //gml:TimePeriod/gml:endPosition

getting temporals with XPATH

//gmd:identificationInfo//gmd:extent//gmd:temporalElement//gml:TimePeriod/gml:beginPosition
//gmd:identificationInfo//gmd:extent//gmd:temporalElement//gml:TimePeriod/gml:endPosition

Example for geocat mapping to dct:temporal

Getting a time period for a dataset with //gmd:identificationInfo//gmd:extent//gmd:temporalElement

<gmd:temporalElement>
    <gmd:EX_TemporalExtent>
        <gmd:extent>
            <gml:TimePeriod gml:id="timePeriod1">
                <gml:beginPosition>2020-02-01T00:00:00</gml:beginPosition>
                <gml:endPosition>2021-04-01T23:59:59</gml:endPosition>
            </gml:TimePeriod>
        </gmd:extent>
    </gmd:EX_TemporalExtent>
</gmd:temporalElement>

`//gmd:identificationInfo//che:CHE_MD_MaintenanceInformation` to `dct:accrualPeriodicity`

DCAT: dcat:accrualPeriodicity
XPATH: //gmd:identificationInfo//che:CHE_MD_MaintenanceInformation/gmd:maintenanceAndUpdateFrequency/
Value: gmd:MD_MaintenanceFrequencyCode/@codeListValue
Mapping of values: For the mapping of Frequency Codes see below

getting frequency with XPATH

//gmd:identificationInfo//che:CHE_MD_MaintenanceInformation/gmd:maintenanceAndUpdateFrequency/gmd:MD_MaintenanceFrequencyCode/@codeListValue

Mapping of the Frequency Codes

frequency_mapping = {
    'continual':
      'http://publications.europa.eu/resource/authority/frequency/CONT',
    'daily':
      'http://publications.europa.eu/resource/authority/frequency/DAILY',
    'weekly':
      'http://publications.europa.eu/resource/authority/frequency/WEEKLY',
    'fortnightly':
      'http://publications.europa.eu/resource/authority/frequency/BIWEEKLY',
    'monthly':
      'http://publications.europa.eu/resource/authority/frequency/MONTHLY',
    'quarterly':
      'http://publications.europa.eu/resource/authority/frequency/QUARTERLY',
    'biannually':
      'http://publications.europa.eu/resource/authority/frequency/ANNUAL_2',
    'annually':
      'http://publications.europa.eu/resource/authority/frequency/ANNUAL',
    'asNeeded':
      'http://publications.europa.eu/resource/authority/frequency/IRREG',
    'irregular':
      'http://publications.europa.eu/resource/authority/frequency/IRREG',
}

Example for geocat mapping to dct:accrualPeriodicity

Picking up the update frequency: here „annually“

<gmd:maintenanceAndUpdateFrequency>
    <gmd:MD_MaintenanceFrequencyCode
        codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#MD_MaintenanceFrequencyCode"
        codeListValue="annually"/>
</gmd:maintenanceAndUpdateFrequency>

`//gmd:identificationInfo//gmd:aggregationInfo` to `dcat:qualifiedRelation`

DCAT: dcat:qualifiedRelation
XPATH: //gmd:identificationInfo//gmd:aggregationInfo//gmd:aggregateDataSetIdentifier/gmd:MD_Identifier
Value: /gmd:code/gco:CharacterString
Mapping of Values: The geocat identifier is mapped to a dct:identifier by attaching @<organization-slug>

XPATH for dcat:qualifiedRelation: all such values are taken

//gmd:identificationInfo//gmd:aggregationInfo//gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code/gco:CharacterString

Example for geocat mapping to dcat:qualifiedRelation

Geocat Identifiers for dcat:qualifiedRelation

<gmd:aggregateDataSetIdentifier>
    <gmd:MD_Identifier>
        <gmd:code>
            <gco:CharacterString>73856ca2:f21d:4cc9:90f6:f3e8375555df</gco:CharacterString>
        </gmd:code>
    </gmd:MD_Identifier>
</gmd:aggregateDataSetIdentifier>

`//gmd:distributionInfo/gmd:MD_Distribution` to `foaf:page`

DCAT: foaf:page
XPATH: //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource
Protocol: WWW:LINK
Value: .//gmd:linkage/gmd:URL/text()
Fallback-Value: './/che:LocalisedURL for any language
Usage Notes: The first resource with WWW:LINK protocol is mapped as dcat:landingPage. All other resources with WWW:LINK protocol are mapped as foaf:page.

ISO-19139_che XPath for foaf:page

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource

ISO-19139_che XPath for distribution protocol

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

Example for geocat mapping to foaf:page

Mapping of the documentation of all other resources except the first one with protocol WWW:LINK

<gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://swisstopo.admin.ch</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://swisstopo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>WWW:LINK</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Landing Page</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">Landing Page</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString/>
    </gmd:description>
    <gmd:function>
        <gmd:CI_OnLineFunctionCode
            codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_OnLineFunctionCode"
            codeListValue="information"/>
    </gmd:function>
</gmd:CI_OnlineResource>

`//che:dataModel//che:LocalisedURL` to `dct:conformsTo`

DCAT: dct:conformsTo
XPATH: che:CHEMD_Metadata/gmd:contentInfo/che:CHE_MD_FeatureCatalogueDescription/che:dataModel/
Value: .//gmd:contentInfo//che:CHE_MD_FeatureCatalogueDescription//che:dataModel/text()
Usage Notes

ISO-19139_che XPath for dct:conforms to

.//gmd:contentInfo//che:CHE_MD_FeatureCatalogueDescription//che:dataModel//che:PT_FreeURL//che:URLGroup//che:LocalisedURL[@locale="#DE"]/text()
.//gmd:contentInfo//che:CHE_MD_FeatureCatalogueDescription//che:dataModel//che:PT_FreeURL//che:URLGroup//che:LocalisedURLL[@locale="#FR"]/text()
.//gmd:contentInfo//che:CHE_MD_FeatureCatalogueDescription//che:dataModel//che:PT_FreeURL//che:URLGroup//che:LocalisedURL[@locale="#EN"]/text()
.//gmd:contentInfo//che:CHE_MD_FeatureCatalogueDescription//che:dataModel//che:PT_FreeURL//che:URLGroup//che:LocalisedURL[@locale="#IT"]/text()
.//gmd:contentInfo//che:CHE_MD_FeatureCatalogueDescription//che:dataModel//che:PT_FreeURL//che:URLGroup//che:LocalisedURL/text()

Example for geocat mapping to dct:conformsTo

Mapping of the che:dataModel to dct:conforms to

<che:dataModel xsi:type="che:PT_FreeURL_PropertyType">
  <che:PT_FreeURL>
    <che:URLGroup>
      <che:LocalisedURL locale="#FR">https://models.geo.admin.ch/ASTRA/</che:LocalisedURL>
    </che:URLGroup>
  </che:PT_FreeURL>
</che:dataModel>

Distribution

Set `dcat:accessURL`

DCAT: dcat:accessURL
XPATH: //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource
Mapping: The mapping depends on the protocol. If the protocol starts in the following way it is mapped to a dcat:Distribution: WWW:DOWNLOAD, OGC:WMTS, OGC:WFS, "OGC:WMS, LINKED:DATA, ESRI:REST, MAP:Preview, WWW:DOWNLOAD-APP
Value: .//gmd:linkage/gmd:URL/text()
Fallback-Value: './/che:LocalisedURL for any language
Usage Notes: For the protocol WWW:DOWNLOAD the protocol should include the format of the resource: for example WWW:DOWNLOAD:INTERLIS

ISO-19139_che XPath for geocat distribution`

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource

ISO-19139_che XPath for distribution protocol

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

Example of a „LINKED:DATA“ Distribution

Example of mapping to the dcat:accessURL for a distribution of protocol „LINKED:DATA“

 <gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://ld.geo.admin.ch/data/swissBOUNDARIES3D</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://ld.geo.admin.ch/data/swissBOUNDARIES3D</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://ld.geo.admin.ch/data/swissBOUNDARIES3D</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://ld.geo.admin.ch/data/swissBOUNDARIES3D</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://ld.geo.admin.ch/data/swissBOUNDARIES3D</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>LINKED:DATA</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>LD</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">LD</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
 </gmd:CI_OnlineResource>

Set `dcat:downloadURL`

DCAT: dcat:downloadURL
XPATH: //gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource
Protocol: .//gmd:protocol/gco:CharacterString WWW:DOWNLOAD
Value: .//gmd:linkage/gmd:URL/text()
Fallback-Value: './/che:LocalisedURL for any language
Usage Notes: For the protocol WWW:DOWNLOAD the same url is mapped to both dcat:accessURL and dcat:downloadURL

default path of the download url within the geocat distribution

.//gmd:linkage//gmd:URL/text()

Example of a „WWW:DOWNLOAD“ Distribution

Example of mapping to dcat:downloadURL for a Distribution with protocol „WWW:DOWNLOAD:INTERLIS“

<gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://data.geo.admin.ch</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>WWW:DOWNLOAD:INTERLIS</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Datenbezug über data.geo.admin</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">Datenbezug über data.geo.admin</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString/>
    </gmd:description>
    <gmd:function>
        <gmd:CI_OnLineFunctionCode
            codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_OnLineFunctionCode"
            codeListValue="download"/>
    </gmd:function>
</gmd:CI_OnlineResource>

Set `dct:rights`

DCAT: dct:rights
XPATH: //gmd:resourceConstraints//gmd:otherConstraints
Mapping of values: Geocat rights statements are mapped to rights statements from the DCAT-AP CH rights vocabulary: RIGHTS-RDF, RIGHTS-Turtle. For details of the mapping, see below.

getting rights statements with XPATH

//gmd:resourceConstraints//gmd:otherConstraints

Mapping of rights statements

    rights = {
        u'Freie Nutzung': 'NonCommercialAllowed-CommercialAllowed-ReferenceNotRequired',
        u'Utilisation libre': 'NonCommercialAllowed-CommercialAllowed-ReferenceNotRequired',

        u'Freie Nutzung. Quellenangabe ist Pflicht.': 'NonCommercialAllowed-CommercialAllowed-ReferenceRequired',
        u'Utilisation libre. Obligation d’indiquer la source.': 'NonCommercialAllowed-CommercialAllowed-ReferenceRequired',

        u'Freie Nutzung. Kommerzielle Nutzung nur mit Bewilligung des Datenlieferanten zulässig.': 'NonCommercialAllowed-CommercialWithPermission-ReferenceNotRequired',
        u'Utilisation libre. Utilisation à des fins commerciales uniquement avec l’autorisation du fournisseur des données.': 'NonCommercialAllowed-CommercialWithPermission-ReferenceNotRequired',

        u'Freie Nutzung. Quellenangabe ist Pflicht. Kommerzielle Nutzung nur mit Bewilligung des Datenlieferanten zulässig.': 'NonCommercialAllowed-CommercialWithPermission-ReferenceRequired',
        u'Utilisation libre. Obligation d’indiquer la source. Utilisation commerciale uniquement avec l’autorisation du fournisseur des données.': 'NonCommercialAllowed-CommercialWithPermission-ReferenceRequired'
    }

Example for geocat mapping to dct:rights

Example of getting rights statements from //gmd:resourceConstraints//gmd:otherConstraints.

<gmd:resourceConstraints>
    <gmd:MD_LegalConstraints>
        <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
            <gmx:Anchor>Opendata BY: Freie Nutzung. Quellenangabe ist Pflicht.</gmx:Anchor>
            <gmd:PT_FreeText>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#DE">Opendata BY: Freie Nutzung. Quellenangabe
                        ist Pflicht.
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#FR">Opendata BY: Utilisation libre.
                        Obligation d’indiquer la source.
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#IT">Opendata BY: Libero utilizzo. Indicazione
                        della fonte obbligatoria.
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
                <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#EN">Opendata BY: Open use. Must provide the
                        source.
                    </gmd:LocalisedCharacterString>
                </gmd:textGroup>
            </gmd:PT_FreeText>
        </gmd:otherConstraints>
    </gmd:MD_LegalConstraints>
</gmd:resourceConstraints>

Set `dcat:mediaType`

DCAT: dcat:mediaType
Usage-Notes: For protocol „WWW:DOWNLOAD“ the media type is derived by splitting the protocol name: the protocol name is expected as <download-protocol>:<media-type>. For protocols „OGC:WMTS“, „OGC:WMS“, „OGC:WFS“, „LINKED:DATA“, „MAP:Preview“, „ESRI:REST“ the dcat:mediaType is „SERVICE“

ISO-19139_che XPath for distribution protocol

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

Example of a „WWW:DOWNLOAD“ Distribution with dcat:mediaType „INTERLIS“

Example of mapping to dcat:mediaType for a Distribution with protocol „WWW:DOWNLOAD:INTERLIS“

<gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://data.geo.admin.ch</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://data.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>WWW:DOWNLOAD:INTERLIS</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Datenbezug über data.geo.admin</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">Datenbezug über data.geo.admin</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString/>
    </gmd:description>
    <gmd:function>
        <gmd:CI_OnLineFunctionCode
            codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#CI_OnLineFunctionCode"
            codeListValue="download"/>
    </gmd:function>
</gmd:CI_OnlineResource>

Set `dct:format`

DCAT: dct:format
Usage-Notes: For protocol „WWW:DOWNLOAD“ the format is derived in the same way as the media type. For the other protocols the format is derived from the protocol as described in the mapping below.

ISO-19139_che XPath for distribution protocol

//gmd:distributionInfo/gmd:MD_Distribution//gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol

Mapping of protocol names to dct:format of dcat:Distribution

protocol_to_format_mapping = {
    "OGC:WMTS": "WMTS",
    "OGC:WMS": "WMS",
    "OGC:WFS": "WFS",
    "ESRI:REST": "API"
}

Example of a „WWW:WMS“ Distribution with dct:format „WMS“

Example of mapping to dct:format for a Distribution with protocol „WWW:WMS“ to „WMS“

<gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>http://wms.geo.admin.ch/?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetCapabilities&lang=fr</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">http://wms.geo.admin.ch/?SERVICE=WMS&VERSION=1.3.0&
                    REQUEST=GetCapabilities&lang=fr
                </che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">http://wms.geo.admin.ch/?SERVICE=WMS&VERSION=1.3.0&
                    REQUEST=GetCapabilities&lang=de
                </che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">http://wms.geo.admin.ch/?SERVICE=WMS&VERSION=1.3.0&
                    REQUEST=GetCapabilities&lang=it
                </che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>OGC:WMS</gco:CharacterString>
    </gmd:protocol>
    <gmd:name gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString/>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#FR"/>
            </gmd:textGroup>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">ch.swisstopo-vd.ortschaftenverzeichnis_plz
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Service WMS de geo.admin.ch</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#FR">Service WMS de geo.admin.ch
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">WMS Dienst von geo.admin.ch
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#IT">Servizio WMS di geo.admin.ch
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#EN">WMS Service from geo.admin.ch
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:description>
</gmd:CI_OnlineResource>

Set `dct:title`

DCAT: dct:title
XPATH: Mapping depends on the type of distribution that is derived from the protocol
Protocol: //gmd:transferOptions//gmd:CI_OnlineResource//gmd:protocol/gco:CharacterString
Name: .//gmd:distributionInfo//gmd:transferOptions//gmd:name
Usage Notes: The title of the distribution is derived by mapping the normed protocol name to a derived protocol name and then adding the name of the Distribution.

relative XPath to the protocol of a Distribution

.//gmd:distributionInfo//gmd:transferOptions//gmd:protocol/gco:CharacterString

ISO-19139_che XPath for the name of a Distribution

.//gmd:distributionInfo//gmd:transferOptions/gmd:name

Mapping of protocol names to dct:title of dcat:Distribution

protocol_to_name_mapping = {
    "OGC:WMTS": "WMTS",
    "OGC:WMS": "WMS",
    "OGC:WFS": "WFS",
    "WWW:DOWNLOAD": "Download",
    "LINKED:DATA": "Linked Data (Dienst)",
    "MAP:Preview": "Map (Preview)",
    "ESRI:REST": "ESRI (Rest)"
}

Example for geocat mapping to dct:title

Example of mapping to dcat:mediaType for a Distribution with protocol OGC:WFS The derived title is „OGC:WFS (GetCapabilities) DE#WFS“

 <gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>http://wfs.geo.admin.ch</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">http://wfs.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">http://wfs.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">http://wfs.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">http://wfs.geo.admin.ch</che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>OGC:WFS</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>DE#WFS</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">DE#WFS</gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
 </gmd:CI_OnlineResource>

Set `dct:description`

DCAT: dct:description
XPATH: //gmd:distributionInfo//gmd:transferOptions//gmd:description

relative XPath in the Distribution

.//gmd:description//gmd:LocalisedCharacterString

Example for geocat mapping to dct:description

Example of getting dct:description for dcat:Distribution from a geocat distribution

<gmd:CI_OnlineResource>
    <gmd:linkage>
        <gmd:URL>https://map.geo.admin.ch/?layers=ch.bfe.energiestaedte
        </gmd:URL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>MAP:Preview</gco:CharacterString>
    </gmd:protocol>
    <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>Map Preview</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">Map Preview
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:name>
    <gmd:description xsi:type="gmd:PT_FreeText_PropertyType">
        <gco:CharacterString>map preview</gco:CharacterString>
        <gmd:PT_FreeText>
            <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DE">map preview
                </gmd:LocalisedCharacterString>
            </gmd:textGroup>
        </gmd:PT_FreeText>
    </gmd:description>
</gmd:CI_OnlineResource>

Set `dct:language`

DCAT: dct:language
Usage-Notes: The language is derived from the languages that a localized url is offered for.

Example for geocat mapping to dct:language

Example of mapping to dct:language for a Distribution with protocol WWW:DOWNLOAD

<gmd:CI_OnlineResource>
    <gmd:linkage xsi:type="che:PT_FreeURL_PropertyType">
        <gmd:URL>https://data.geo.admin.ch/ch.meteoschweiz.klima/phaenologie/data.zip</gmd:URL>
        <che:PT_FreeURL>
            <che:URLGroup>
                <che:LocalisedURL locale="#DE">https://www.meteoschweiz.admin.ch/home/mess-und-prognosesysteme/bodenstationen/data.zip
                </che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#FR">https://www.meteosuisse.admin.ch/home/systemes-de-mesure-et-de-prevision/stations-au-sol/data.zip
                </che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#IT">https://www.meteosvizzera.admin.ch/home/sistemi-di-rilevamento-e-previsione/stazioni-al-suolo/data.zip
                </che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#EN">https://www.meteoswiss.admin.ch/home/measurement-and-forecasting-systems/land-based-stations/data.zip
                </che:LocalisedURL>
            </che:URLGroup>
            <che:URLGroup>
                <che:LocalisedURL locale="#RM">https://www.meteoschweiz.admin.ch/home/mess-und-prognosesysteme/bodenstationen/data.zip
                </che:LocalisedURL>
            </che:URLGroup>
        </che:PT_FreeURL>
    </gmd:linkage>
    <gmd:protocol>
        <gco:CharacterString>WWW:DOWNLOAD</gco:CharacterString>
    </gmd:protocol>
</gmd:CI_OnlineResource>

ISO-19139_che zu DCAT-AP CH

Transformation des Geometadatenstandards für opendata.swiss

DCAT-AP CH Standard Overview

Example-Catalog

Overview

Mapping to dcat:Dataset

Mapping to dcat:Distribution

Dataset

//gmd:fileIdentifier to dct:identifier

/gmd:identificationInfo//gmd:citation//gmd:title to dct:title

/gmd:identificationInfo//gmd:abstract to dct:description

gmd:pointOfContact or //gmd:contact to dct:publisher

gmd:pointOfContact or //gmd:contact to dct:contactPoint

//gmd:distributionInfo/gmd:MD_Distribution to dcat:distribution

//gmd:identificationInfo//gmd:citation//gmd:CI_Date to dct:issued

//gmd:identificationInfo//gmd:citation//gmd:CI_Date to dct:modified

//gmd:identificationInfo//gmd:topicCategory/ to dcat:theme

//gmd:identificationInfo//gmd:language to dct:language

//gmd:distributionInfo/gmd:MD_Distribution to dct:landing-page

//gmd:distributionInfo/gmd:MD_Distribution to dct:relation

//gmd:identificationInfo//gmd:descriptiveKeywords to dcat:keyword

//gmd:identificationInfo//gmd:extent//gmd:description to dct:spatial

//gmd:identificationInfo//gmd:extent//gmd:temporalElement to dct:temporal

//gmd:identificationInfo//che:CHE_MD_MaintenanceInformation to dct:accrualPeriodicity

//gmd:identificationInfo//gmd:aggregationInfo to dcat:qualifiedRelation

//gmd:distributionInfo/gmd:MD_Distribution to foaf:page

//che:dataModel//che:LocalisedURL to dct:conformsTo

Distribution

Set dcat:accessURL

Set dcat:downloadURL

Set dct:rights

Set dcat:mediaType

Set dct:format

Set dct:title

Set dct:description

Set dct:language

`//gmd:fileIdentifier` to `dct:identifier`

`/gmd:identificationInfo//gmd:citation//gmd:title` to `dct:title`

`/gmd:identificationInfo//gmd:abstract` to `dct:description`

`gmd:pointOfContact` or `//gmd:contact` to `dct:publisher`

`gmd:pointOfContact or //gmd:contact` to `dct:contactPoint`

`//gmd:distributionInfo/gmd:MD_Distribution` to `dcat:distribution`

`//gmd:identificationInfo//gmd:citation//gmd:CI_Date` to `dct:issued`

`//gmd:identificationInfo//gmd:citation//gmd:CI_Date` to `dct:modified`

`//gmd:identificationInfo//gmd:topicCategory/` to `dcat:theme`

`//gmd:identificationInfo//gmd:language` to `dct:language`

`//gmd:distributionInfo/gmd:MD_Distribution` to `dct:landing-page`

`//gmd:distributionInfo/gmd:MD_Distribution` to `dct:relation`

`//gmd:identificationInfo//gmd:descriptiveKeywords` to `dcat:keyword`

`//gmd:identificationInfo//gmd:extent//gmd:description` to `dct:spatial`

`//gmd:identificationInfo//gmd:extent//gmd:temporalElement` to `dct:temporal`

`//gmd:identificationInfo//che:CHE_MD_MaintenanceInformation` to `dct:accrualPeriodicity`

`//gmd:identificationInfo//gmd:aggregationInfo` to `dcat:qualifiedRelation`

`//gmd:distributionInfo/gmd:MD_Distribution` to `foaf:page`

`//che:dataModel//che:LocalisedURL` to `dct:conformsTo`

Set `dcat:accessURL`

Set `dcat:downloadURL`

Set `dct:rights`

Set `dcat:mediaType`

Set `dct:format`

Set `dct:title`

Set `dct:description`

Set `dct:language`