Data in ank simeon nedkov 4-11-15
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Transcript of Data in ank simeon nedkov 4-11-15
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de data vanAtlas Natuurlijk KapitaalSimeon Nedkov
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Bio en vooruitzicht@simeonnedkovGeo-IT consultant
Passie voor open overheid en bruikbare open geo data
Vandaag: - hoe kom ik aan info in de ANK? - waar vind ik nog meer open geo data?
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Waar is de data?“I was unable to find any WMS services or
download possibilities in the ANK.
Is it just me lacking sufficient levels of caffeine or is it only possibility to look at
the data?”
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Waar is de data?
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Waar is de data?
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AHNhttp://geodata.nationaalgeoregister.nl/ahn25m/wms
Web Mapping Service
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WMS - afbeeldingen
http://geodata.nationaalgeoregister.nl/ahn25m/wms?request=getMap&service=WMS&version=1.1.1&
layers=ahn25m&srs=EPSG:28992&bbox=13014,306243,286599,623492&width=300&height=400&format=image/png
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WMS - attribuut waarde
http://geodata.nationaalgeoregister.nl/ahn25m/wms?request=GetFeatureInfo&service=WMS&version=1.1.1&
query_layers=ahn25m&info_format=text/html&x=353&y=145&
layers=ahn25m&srs=EPSG:28892&bbox=197896, 429027, 205562, 433818&format=image/png&width=780&height=330&
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GetFeatureInfo - response
text/plain
text/html
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http://geo.serv.er/wms
ANKWMSafbeeldingen
WFSvectoren en attributen
Tile
Cache
http://geo.serv.er/wfs
- (Spatial) filters- (Spatial) operations- Coordinate transformations
data
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Anatomy of WFSDelivers geometry
Geographical Markup Language
GeoJSON
Anatomy of WFS
BAGhttp://geodata.nationaalgeoregister.nl/bagviewer/wfs?
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http://geodata.nationaalgeoregister.nl/bagviewer/wfs?request=getFeature&service=wfs&vesion=2.0.0&
bbox=70420.6,429242.6,70423.6,429243&typeName=bagviewer:pand&outputFormat=json
WFS - vectoren
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{"type": "Feature","id": "pand.fid--2e3a32e5_13db0af9ceb_65e","geometry": {
"type": "Polygon","coordinates": [ [ [ 70418.262, 429235.086 ], [ ... ] ] ]
}"geometry_name": "geometrie","properties": {
"gid": 6571756, "identificatie": 530100002242340, "bouwjaar": 2002, "status": "Pand in gebruik", "gebruiksdoel": "woonfunctie", "oppervlakte_min": 165, "oppervlakte_max": 165, "aantal_verblijfsobjecten": 1
} }
GetFeature - response
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http://geodata.nationaalgeoregister.nl/bagviewer/wfs?request=getFeature&service=wfs&version=2.0.0
bbox=70420.6, 429242.6,70423.6,429243&typeName=bagviewer:pand&outputFormat=json&srsname=EPSG:4326
Coord. transformatie
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{"type": "Feature","id": "pand.fid--2e3a32e5_13db0af9ceb_65e","geometry": {
"type": "Polygon","coordinates":
[ [ [ 4.159718956737263, 51.84527267018053 ], [ ... ] ] ]}"geometry_name": "geometrie","properties": {
"gid": 6571756, "identificatie": 530100002242340, "bouwjaar": 2002, "status": "Pand in gebruik", "gebruiksdoel": "woonfunctie", "oppervlakte_min": 165, "oppervlakte_max": 165, "aantal_verblijfsobjecten": 1
} }
Features in lon/lat
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Say what?
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pdok-ngr.readthedocs.org
Geonovum documentatie
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QGIS
reads WMS/WFS
transforms coordinates
saves to disk
handles many file types
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Add WMS/WFS layer
Add WFS layer button
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Save WFS layer as lat/lon in GeoJSON
Right-click on layer -> Save As...
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Waar is de WFS?
https://github.com/openstate/susthacking/blob/master/data/atlas2csv.py
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Klik hier voor data!
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QGIS demonstratievan datasets in ANK
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Meer data...http://www.atlasleefomgeving.nl/
https://www.pdok.nl/
http://www.provinciaalgeoregister.nl/georegister
http://nationaalgeoregister.nl
http://data.overheid.nl
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INSPIRE
"... an EU initiative to establish an infrastructure for spatial information
in Europe ..."
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http://inspiredatagids.nl
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WFS 1.0.0 / 1.1.0 / 2.0.0 of niet
Limiet op aantal downloadbare objecten
GML / EPSG:28992
Nutteloze datasets (enkel id en geometrie)
“Waar(op) moet ik op zoeken?”
Valkuilen
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Vragen?
pdok-ngr.readthedocs.org(documentatie)
pdokforum.geonovum.nl(forum)
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Opmerkingen en suggesties
pdok-ngr.readthedocs.org(documentatie)
pdokforum.geonovum.nl(forum)
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Dank!
github.com/openstate/susthacking(scripts, voorbeelden, data)
@simeonnedkov