Visualising Surface Contours in Aven
olly at survex.com
Thu Oct 5 17:11:10 BST 2006
On Thu, Oct 05, 2006 at 02:52:36PM +0100, Paul Footleg Fretwell wrote:
> I've been experimenting with plotting the surface contours over a cave
> survey and have found the results difficult to visualise in Aven.
> Marking the surface using the surface flag colours all the contours white,
> but the cave survey colouring is now based on the total elevation range of
> the data in the 3d file including the surface. So in effect all my cave
> appears blue, where as without the surface contours the cave was coloured
> from blue through to red based on the elevation range just within the
So it is. That's a bug - the colour range should just depend on the
cave passage. I guess I've just never noticed because I don't have
surface survey that much higher than the cave entrances.
> Are there any options I can try which might help?
It should be easy to fix the bug - if you're using Linux I can send a
source patch. If you're on Windows, you'll need to wait until I can
sort out the next release, which will probably be a week or two.
I'm going to add explicit support for terrain data soon too, which will
probably look better still.
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