[mapserver-dev] Derive units from a layer projection... Possible?

[Lime, Steve D (MNIT)]

Do we have any code to derive a layer's unit based on it's projection? The units can be explicitly set but that's not often the case. I'm reworking the WFS dwithin/beyond code and need a reliable way to derive units to convert the user supplied distance to layer units. Maybe its enough just to use layer->units, and then defer to map->units if not set.

Steve
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