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Bonjour,
<br><br>I've also posted this on the GRASS-users mailist but since I didn't receive an answer, I thought I might try this one.<br><br>I am having problems to see vectors I have added height to with
v.extrude . The trick is that I am actually using the e.g. given in
NETELER, M and H. MITASOVA <i>Open Source GIS a GRASS GIS Approach</i> with the North Carolina sample data. So in theory, this example should really be working...
<br><br>Here is what I did
<br><br>g.region rast=el_D792_6m -p
<br><br>v.extract P079215 out=bldg_resid_a where="layer='BLDG_RESID_BL'"
<br>v.extract P079215 out=bldg_cmcl_a where="layer='BLDG_COMMER_BL'"
<br><br>v.extrude -t bldg_resid_a out=bldg_resid_a_3d height=10 elev=el_D792_6m
<br>v.extrude -t bldg_cmcl_a out=bldg_cmcl_a_3d height=15 elev=el_D792_6m
<br><br>g.region rural_1m -p
<br>nviz elev_lid792_1m col=ortho_2001_t792_1m vect=bldg_resid_a_3d,bldg_cmcl_a_3d
<br><br>I am using Grass 6.4.1 with the python GUI on Windows 7
<br><br>Now the infamous result is just some line on what should be the
height of the building, like if NVIZ read it as lines rather than 3D
surface...
<br><br><img src="http://osgeo-org.1803224.n2.nabble.com/file/n6660339/problemextrude.jpg" alt="the result" border="0"><br><br>I've encountered also this problem when I tried to visualised a DXF file in NVIZ. The windmill shows up but in broken lines which is no good to me.<br><br><br><br><br>Thank you for your help, I'm very new to GIS and Open Source,
and I must admit I don't know where to find the ressources to help...<br><br> Delphine
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