GrandLyon Data services usage : OpenLayers

WCS examples ------------------- This example shows the usage of a WCS service to retrieve NO2 raw data for 2012 across the Grand Lyon territory. In this example, we will use the server 2.0.1 of standard, which is the most recent. But it is also possible to use 1.1.1 or even 1.0.0 versions. **Step 1** : getting the service capabilities https://data.grandlyon.com/wcs?SERVICE=WCS&REQUEST=GetCapabilities&VERSION=2.0.1 .. image:: _static/wcs_GetCapabilities.png Among the received information, one can discover the available output formats. WCS is a kind of service designed to provide raw data. Thus it is recommanded to use it with an output format able to handle full image definition, like **image/x-aaigrid** for monoband images or **image/tiff** for a multi-spectral raster file rather than the visualization output formats that are **image/jpeg** or **image/gif**. In the last part of the returned XML document, we find the coverage list available from the service, and as part of it the **grandlyon:sTFONS_Step_02cm_2018** coverage we will be using in the rest of this example. **Step 2** : Coverages details https://data.grandlyon.com/geoserver/wcs?SERVICE=WCS&REQUEST=DescribeCoverage&VERSION=2.0.1&COVERAGEID=grandlyon:STFONS_Step_02cm_2018 Caution ! In the 2.0.1 version, the parameter used to indicate the requested coverage is **COVERAGEID**, but in version 1.0 it's **IDENTIFIER** and in version 1.1, it's **COVERAGE**. Yes, it's a lot of fun and provdes a lot a work for consultants. Beware the coverage name case as well if you are manually testing the requests from a web browser : the WCS service is case sensitive. That way, the *grandlyon:sTFONS_Step_02cm_2018* coverage (with lower case 'l') won't be found by the service. .. image:: _static/wcs_DescribeCoverage.png This request lets you retrieve all the details of the specified coverage, like the geographic extent or information about the different bands. It shows clearly the data source we are requesting is a 3 band multi-spectral image. **Step 3** : obtention de la couverture The following request lets you retrieve a sample of the original raster image in TIFF format : https://data.grandlyon.com/geoserver/wcs?SERVICE=WCS&VERSION=2.0.1&REQUEST=GetCoverage&FORMAT=image/tiff&COVERAGEID=grandlyon:STFONS_Step_02cm_2018 CSW Service usage -------------------------- This example illustrates the usage of a CSW service to get information about the metadata. **Step 1** : Service capacities reading https://data.grandlyon.com/geonetwork/srv/fre/csw?version=2.0.2&request=GetCapabilities&service=CSW XML document rendering example (from QGIS CSW plugin): .. image:: _static/csw_getCapabilities.png **Step 2** : Query with keywords (transport here) POST request : https://data.grandlyon.com/geonetwork/srv/fre/csw with XML data embedded in the POST body : .. code-block:: xml full csw:AnyText Réseaux de transport XML response abstract : .. code-block:: xml Alertes accessibilitÃ© du rÃ©seau TCL 256900994 RÃ©seaux de transport Services d'utilitÃ© publique et services publics Les alertes accessibilitÃ© recensent les ascenseurs et escaliers mÃ©caniques actuellement indisponibles dans les stations de mÃ©tro et de tramway Ã©quipÃ©es du rÃ©seau TCL. SYTRAL nonGeographicDataset application/json text/csv csv (taille : 2 Ko) DonnÃ©es provenant de la base gÃ©ographique et topologique TCL SYTRAL. fre https://download.data.grandlyon.com/ws/rdata/tcl_sytral.tclalerteaccessibilite/all.json https://download.data.grandlyon.com/files/rdata/tcl_sytral.tclalerteaccessibilite/alerte_accessibilite.csv https://download.data.grandlyon.com/files/grandlyon/LicenceEngagee.pdf North 45.917, South 45.55, East 5.067, West 4.681. GRAND LYON Licence EngagÃ©e Pas de restriction d'accÃ¨s public selon INSPIRE 2014-12-04 2015-02-02 16a9a657-e938-484e-a067-5cdacd7a0419 Free access with registration continuous 2015-11-06T00:02:26 4721ec9e-86c8-4687-8713-f406290949ad 45.55 4.681 45.917 5.067 58f93af3-a651-4cbd-bd9d-b4562f8d404d 2015-11-06T00:04:55 Lignes de mÃ©tro et funiculaire du rÃ©seau TCL dataset RÃ©seaux de transport Services d'utilitÃ© publique et services publics transportation La reprÃ©sentation graphique des lignes de mÃ©tro et de funiculaire du rÃ©seau TCL est un objet linÃ©aire qui localise la ligne et son parcours de terminus Ã terminus. La reprÃ©sentation graphique des lignes est caractÃ©risÃ©e par des informations de gestion (identifiant, numÃ©ro de ligne et sens, libellÃ©, unitÃ© de transport, couleur du tracÃ©, famille de transport) et de tracÃ©s (polylignes de terminus Ã terminus). La reprÃ©sentation graphique des lignes de mÃ©tro et de funiculaire du rÃ©seau TCL est un objet linÃ©aire qui localise la ligne et son parcours de terminus Ã terminus. La reprÃ©sentation graphique des lignes est caractÃ©risÃ©e par des informations de gestion (identifiant, numÃ©ro de ligne et sens, libellÃ©, unitÃ© de transport, couleur du tracÃ©, famille de transport) et de tracÃ©s (polylignes de terminus Ã terminus). license fre DonnÃ©es provenant de la base gÃ©ographique et topologique TCL SYTRAL. 16a9a657-e938-484e-a067-5cdacd7a0419 5.1410943067093 45.486705557736 4.629545313738 45.945335689366 jdbc:postgresql://postgis_tr:5432/grandlyon:$gl69@rdata https://download.data.grandlyon.com/wms/rdata https://download.data.grandlyon.com/wfs/rdata https://download.data.grandlyon.com/ws/rdata/tcl_sytral.tcllignemf/all.json https://download.data.grandlyon.com/files/grandlyon/LicenceOuverte.pdf https://download.data.grandlyon.com/catalogue/srv/fre/resources.get?uuid=58f93af3-a651-4cbd-bd9d-b4562f8d404d&fname=funimetrotrac_s.png https://download.data.grandlyon.com/catalogue/srv/fre/resources.get?uuid=58f93af3-a651-4cbd-bd9d-b4562f8d404d&fname=funimetrotrac.png ... Result presentation example (CSW plugin in QGIS) : .. image:: _static/csw_getRecords1.png **Step 3** : Query with keywords and a geographic extent. POST request : https://data.grandlyon.com/geonetwork/srv/fre/csw with POST data : .. code-block:: xml full ows:BoundingBox 4.7027853 45.597999 4.7191596 45.609031 csw:AnyText Transport, Bus Result presentation example (CSW plugin in QGIS) : .. image:: _static/csw_getRecords2.png **Step 4** : Metadata retrieval from its ID https://data.grandlyon.com/geonetwork/srv/fre/csw?outputFormat=application%2Fxml&service=CSW&outputSchema=http%3A%2F%2Fwww.opengis.net%2Fcat%2Fcsw%2F2.0.2&request=GetRecordById&version=2.0.2&elementsetname=full&id=f5b0fe8e-f9cf-4f3c-8684-6b55d6935f6f resulting XML : .. code-block:: xml f5b0fe8e-f9cf-4f3c-8684-6b55d6935f6f 2015-11-06T00:06:17 Aménagement cyclable dataset Réseaux de transport transportation planningCadastre L'aménagement cyclable est un objet linéaire décrivant une infrastructure dédiée à la circulation des vélos (piste cyclable, bande cyclable, couloir bus ouverte aux vélos, double-sens cyclable, voie verte, mixité en zone de circulation apaisée). Il est caractérisé par des informations de gestion (nom, description, type d'aménagement, année de réalisation ...) L'aménagement cyclable est un objet linéaire décrivant une infrastructure dédiée à la circulation des vélos (piste cyclable, bande cyclable, couloir bus ouverte aux vélos, double-sens cyclable, voie verte, mixité en zone de circulation apaisée). Il est caractérisé par des informations de gestion (nom, description, type d'aménagement, année de réalisation ...) license fre Mise à jour en continu : remontée d'informations travaux des services du Grand Lyon et des partenaires et vérification de la donnée sur le terrain. 5.067 45.55 4.681 45.917 https://download.data.grandlyon.com/wms/grandlyon https://download.data.grandlyon.com/wfs/grandlyon https://download.data.grandlyon.com/ws/grandlyon/pvo_patrimoine_voirie.pvoamenagementcyclable/all.json https://download.data.grandlyon.com/files/grandlyon/LicenceOuverte.pdf https://download.data.grandlyon.com/catalogue/srv/fre/resources.get?uuid=f5b0fe8e-f9cf-4f3c-8684-6b55d6935f6f&fname=DV_AC_s.png https://download.data.grandlyon.com/catalogue/srv/fre/resources.get?uuid=f5b0fe8e-f9cf-4f3c-8684-6b55d6935f6f&fname=DV_AC.png Result presentation example (CSW plugin in QGIS) : .. image:: _static/csw_getRecordByID.png