Has anybody found any grid surface simplication tools? I had hoped to use grid surfaces instead of TIN surfaces to reduce the number of pieces I have to break up a large DEM into... but I need a way to systematically simplify the grid surface...?
any suggestions?
thx.
-d
I guess the simplify surface command in the Modify tab >> edit surface>> simplify surface is in adequate?
Joe Bouza
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I know roundabout way - creat a TIN surfaace by your grid file and then export your new TIN model to DEM file changing grid space. Is it satisfy you?
Binnat,
Thanks, but the grid surface is too big (waaay to many points) for use as a TIN surface within AutoCAD..
I'm truly suprised there don't appear to be any ways to simplify a grid surface... surely the programming would be even easier than for a TIN?
-d
I don't have the map functions unfortunately...
but as it turns out, there is a WAAY better way to do this sort of grid simplication... in ArcGIS.
Using the raster calculation tools, I've been able to take noisy LIDAR data and create smooth contours. The approach uses the standard deviation of the elevation values around a given point to determine if it is in a 'flat' area (and can be averaged) or in a 'steep area' and needs to be preserved.
All the same... AutoCAD should really consider adding this type of functionality to the basic surface modification tools...
-d
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