Does any body here know how to automatically derive a legend from a map style sheet that reflects only the visible polygons on the mapped layer?
Here's what I'm doing: I have a vegetation layer that spans my entire map, but I'm only showing it in sections related to specific watersheds within the map. What I do is use the watershed boundary to create a clipping mask over the veg layer so for each map we only see the veg data within that specific watershed. What I need is a way to automatically generate the legend just as MAPub does but only showing entries for the visible data.
Is there a workflow that or any shortcuts that may help me manage the legends without having to manually identify which of the 40 veg colors are present on each clipped map?
Generate legends in MAPub
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