We are going to let our users add points, polylines and polygons to a map. Are there any international standards for map symbology?
For example for emergency symbols?
Answer
The INSPIRE data specifications define some standard styles for portrayal of topographic data (transport network, hydrography, administrative units, etc.). See for example the section "11.Portrayal" of this document for hydrography.
If you are looking for standards for the representation of style, see SLD and GSS.
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