News in Download services in the Czech Republic. Petr Souček Czech Office for Surveying, Mapping and Cadastre Prague, Czech Republic

Transcription

1 News in Download services in the Czech Republic Petr Souček Czech Office for Surveying, Mapping and Cadastre Prague, Czech Republic

2 Topics The infrastructure The experience with themes Parcels (CP), Addresses (AD), Administrative Units (AU) and Buildings (BU) Download services (direct access WFS) Download services (pre defined datasets GML/ATOM) Conclusions

3 Infrastructure We use single infrastructure for INSPIRE harmonized and nonharmonized national data sets and services. Source data are stored in the Information System of the Cadastre of Real Estates (CP, BU) and in the Register of Territorial Identification, Addresses and Real Estates (AD, AU, BU). Data for publication are stored in the Publication Database.

4 INSPIRE Download services #1 Download services in two versions: 1. Download (direct access, WFS). 2. Download (pre defined datasets in GML, ATOM / WFS). Running since June 28, 2012 (CP), September, 2013 (AD, AU), October, (BU) All services and data are open Free of charge, available for all users and no registration is required Data are available in format GML Data follows INSPIRE Data Specification Implementation by a map server Marushka

5 INSPIRE Download services, var. I Direct access download services (WFS 2.0.0) cp wfs.asp ad wfs.asp au wfs.asp bu wfs.asp Data are updated ONLINE Supported requests GetCapabilities, DescribeFeatureType, ListStoredQueries, DescribeStoredQueries and GetFeature defined by OGC standard version 2.0.0

6 INSPIRE Download services, var. I Direct access download services (WFS) Supported many of coordinate systems (EPSG), on the fly transformation. The National system S JTSK Krovak East North (EPSG 5514), The European system ETRS89 (EPSG 4258), other systems commonly used in the Czech Republic. Limitations of WFS: for layers a single query is limited by the size of defined area and by number of return elements.

7 INSPIRE Download services, var. I Ways of calling getfeature requests 1. by BBOX (specific rectangle), 2. by ID (parcel, cadastral unit, addresses, etc.), 3. by StoredQuery (GetParcel, GetNeighbourParcels, GetZoning, GetUnit, etc.)

8 Calling of WFS GetFeature by POST request WFS now supports calling GetFeature by POST request Example #1: GET request auwfs.asp?service=wfs&request=getfeature&version=2.0.0&srsname=urn:ogc:def:crs:epsg::3857 &BBOX= % %20000% &typeNames=AU:AdministrativeBoundary Example #2: POST request

9 Supporting MultiFeatureType in calling of WFS GetFeature WFS now supports MultiFeatureType in calling GetFeature. It is now possible to get two (or more) type of objects in one query.

10 Supporting StoredQuery urn:ogc:def:query:ogc wfs::getfeaturebyid WFS now supports StoredQuery urn:ogc:def:query:ogc wfs::getfeaturebyid We have added in relation to the project European Location Framework (ELF, auwfs.asp?service=wfs&request=getfeature&version=2.0.0 &STOREDQUERY_ID=urn:ogc:def:query:ogc wfs::getfeaturebyid &ID=AU

11 Supporting parameter ResultType in calling GetFeature WFS now supports parameter ResultType in calling GetFeature We have added in relation to the project European Location Framework (ELF, cpwfs.asp?service=wfs&version=2.0.0&request=getfeature&typenames=cadastr alboundary&srsname=urn:ogc:def:crs:epsg::5514&bbox= , , , &resultType=hits

12 New StoredQueries, e.g. GetFeatureByPoint WFS now supports for example new StoredQueries, e.g. GetFeatureByPoint Query GetFeatureByPoint returns feature on the point, eventually in the surroundings of the point. cpwfs.asp?service=wfs&version=2.0.0&themeid=2&request=getfeature &StoredQuery_id=GetFeatureByPoint&CRS=urn:ogc:def:crs:EPSG::5514 &FEATURE_TYPE=CP:CadastralParcel &POINT= , &srsName=urn:ogc:def:crs:EPSG::5514 List all StoredQueries cpwfs.asp?service=wfs&version=2.0.0 &request=describestoredqueries

13 INSPIRE Download services, var. I Statistics of using approximately 50,000 visits per month Direct access download service (WFS) for themes AD, AU, BU, CP number of visits 0 Sep 2014 Oct 2014 Nov 2014 Dec 2014 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug AD AU BU CP

14 INSPIRE Download services, var. II Download pre defined datasets or pre defined parts of datasets Generated GML files updated daily. For each unit (cadastral zoning [CP], municipality [AD, BU], country [AU]) is generated one GML file in ETRS89 and one GML file in S JTSK Krovak East North. Supported coordinate systems for generated files: The National system S JTSK Krovak East North (EPSG 5514), / / / / The European system ETRS89 (EPSG 4258), / / / /

15 INSPIRE Download services, var. II Download pre defined datasets are provided by ATOM service by WFS request GetFeature and StoredQuery Example: # CUZK_CP_ xml #2 cpwfs.asp?service=wfs&version=2.0.0&request=getfeature&storedquery_id= spire.ec.europa.eu/operation/download/getspatialdataset&crs=urn:ogc:def:crs:epsg ::4258&zipped=true&DataSetIdCode=CP.SD &Language=eng

16 ATOM service ATOM is one of the ways to implement INSPIRE download service. What is an ATOM? standard Atom 1.0 (RFC 4287) similar to the more familiar format RSS XML format

17 ATOM service Schema of download service ATOM elements <entry> contains links to datased feed The main feed elements <entry> contains links to pre defined datasets (GML files) dataset feed A dataset feed B S JTSK ETRS89 S JTSK

18 ATOM service ATOM service is created web feeds in format ATOM two webservices DescribeSpatialDataset and GetSpatialDataset metadata OpenSearchDescription Document

19 ATOM service We have ATOM services for INSPIRE data etc. We have ATOM services for non INSPIRE data etc.

20 ATOM service

21 INSPIRE Download services, var. II Statistics of using approximately 30,000 visits per month Non direct access download service (GML, ATOM) for themes AD, AU, BU, CP number of visits 0 Sep 2014 Oct 2014 Nov 2014 Dec 2014 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug AD AU BU CP

22 INSPIRE Data examples Example #1 All addresses from Prague

23 INSPIRE Data examples Example #2 All buildings from Prague

24 INSPIRE Data examples Example #3 Part of cadastral parcels from Prague

25 INSPIRE Data examples Example #4 All administrative units from The Czech Republic

26 INSPIRE XSD schemas 3.0 => 4.0 1st October : we will update WFS/GML of the schemas CP, AD, AU and BU. Change from application schema 3.0 to application schema 4.0. INSPIRE schema repository at to reflect the changes have been introduced to the Annex I data models in the amendment of the Implementing Rules (Regulation (EU) no. 1253/2013) and the corresponding updated versions of the data specification Technical Guidelines See svn.jrc.ec.europa.eu/projects/inspire gml encoding/wiki/annex_i_schema_updates

27 INSPIRE conclusion All services and data for themes CP, AD, AU, BU are open. All services provided are free of charge for all users and no registration is required. Data and services are available on our geoportal

28 Thank you for your attention Ing. Petr Souček, Ph.D.