Wednesday, 18 March 2015

coordinates - Seeking shapefile from specific city?




Where can I find a shapefile from a specific city?


I am looking from a shapefile from Valencia (Spain). I only find files from the entire country. I want a specific shapefile with some polygons where I can filter a given point from the city and discover if it is in that polygon.


Can I download it from Google Maps?




Answer



You can use QGIS and create a OSM query to achieve that. You need the plugin "QuickOSM"


In QuickOSM You fill the fields as seen here:


enter image description here


and your result is the boundary of the city Valencia :)


it includes all available administrative levels. to get only the inner-city districts:


right click the temporary polygon layer, make it editable and delete all non-innercity districts (they are overlaying the innercity-districts).


To see which are actually districts interesting for you, check the attribute table and have a look at the column "admin_level". OSM Wiki explains what the numbers are standing for:


https://wiki.openstreetmap.org/wiki/Tag%3aboundary=administrative#10_admin_level_values_for_specific_countries


Optionally export the temporary layer to a permanent one.



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