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7

There's a good answer over at Stack Overflow, which goes a little something like this: The geography type is a little bit more restrictive than geometry. It can't cross different hemispheres and the outer ring must be drawn counter-clockwise. The rest can be found here. Another article goes into some more detail: If you’re looking for the ...


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Maybe check out the properties of Projected Coordinate Systems, to get a view into their utility? There are 3 aspects or properties presented in Projected Coordinate Systems that establish their utility and rationale. Any projection of 3D space on a 2D surface will of course exhibit distortion versus reality. Depending on your application, using a specific ...


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You may use ListWorkspaces method (once you make the connection) to list the existing databases within SDE: Lists all of the workspaces within the set workspace. Search conditions can be specified for the workspace name and workspace type to limit the list that is returned. workspaces = arcpy.ListWorkspaces("*", "SDE") for workspace in ...


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Since you've already got a list of dicts, you can use Shapely (to manage the geometry) and Fiona (to write the shape file). from shapely.geometry import mapping from shapely.wkt import loads from fiona import collection schema = {'geometry': 'Point', 'properties': {'atribute1':'value', 'atribute2':'value'}} with collection("output.shp", "w", "ESRI ...


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ArcGIS is very sensitive to database names. You cannot restore data unless the database name is identical. You will need to use Feature Class to Feature Class or a copy/paste, or any of the other ways to copy data with Desktop or ArcPy (the list of options can be daunting). All transfers should be done as the data owner(s), not as the administrative 'sde' ...


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The reason databases implement R-tree indexes for spatial is because they are faster than geohashes or searches on separate x and y indexes. The problem with geohashes, is that you have to search 9 quadrants, not just 1, to do proximity type searches -- see geohash limitations. They are useful in databases that lack R-trees, to allow the expression of an ...



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