[GRASS-user] 3D graphics, two problems

[Tomas Lanczos]

I forgot the attachment, sorry.

Tomas Lanczos wrote:
> I have two questions regarding 3D rasters:
> 
> 1. is there any rule of thumb for generating 3D rasters by v.vol.rst? 
> The 3D raster represented by a cross section on the picture (see the 
> attachment) is generated from 2D vectors layered each 250 m in interval 
> -500 to -6000 below sea level. in the central part ther is apparent a 
> strong oscillation, the outer part is segmentated. How can I avoid those 
> artifacts changing settings (npmin > 500 is causing segfaults) ?
> 
> 2. Using nviz the 3D raster is allways visualised above 0 m a.s.l, 
> however all is below see level (as I explained above). The raster 
> surface is visualised correctly, it should penetrate the 3D raster. Am I 
> doing something wrong, or is it a bug?
> 
> Many thnx in advance and regards
> 
> Tomas
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> 

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