[FWTools] Measure area and distance in FWTools

[Sujoy Chaudhuri]

Hi folks

I'm looking to add a measure tool - simple line distances and areas of
enclosed polygons.

The Atlantis documentation states that the GvPquery layer can be used with
the CTRL key to draw out simple lne distances, but i think the key-press
triggers the zoompan tool in the FWTools release (1.0.0.a4) - or am i
completely wrong?

I went through the ogr.py file and found GetDistance and GetArea, so I know
its possible - but if anyone has alredy written the tool, can you help?

Thanks

Sujoy
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