Hi all,
I'm contouring bathemetry data using gdal_contour and it works really
great. The problem I have is that when depth falls off rapidly like at
the continental shelf or into a canyon, I get too many contour lines
that all bunch up. If I change the contour step size to fix this, then
the flatter areas don't get enough lines.
I wonder if anyone has any ideas on someway to thin these lines or some
way to do adaptive contouring based on maybe something like scanning the
image first to build a masks that represent these rapid changes in depth
and then change the contour levels in these masked areas.
I currently contour into a postgis database, the render them using
mapserver into a tile cache since they are static once they are computed.
I would be interested in any ideas you might have on how to tackle this
problem.
-Steve W
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