Data in ank simeon nedkov 4-11-15

30
de data van Atlas Natuurlijk Kapitaal Simeon Nedkov

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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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