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<HTML><HEAD><TITLE>RE: [GRASS-user] Problem with Nviz : first post</TITLE>
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<DIV dir=ltr align=left><FONT size=2>Many thanks for your suggestions.
</FONT></DIV>
<P><FONT size=2>"What happens if you issue the 'nviz elev=elevation.dem' from
CLI?"</FONT> <BR><FONT size=2>"Please copy/paste the text output here (tcltk GUI
tends to hide some low level errors, like segfault, from the user)."</FONT> </P>
<P><FONT size=2>GRASS 6.0.2 (spearfish60):~ > nviz elev=elevation.dem</FONT>
<BR><FONT size=2>Loading Data</FONT> <BR><FONT size=2>Loading Data</FONT>
<BR><FONT size=2>translating colors</FONT> <BR><FONT size=2>recalculating
normals...</FONT> <BR><FONT size=2>Segmentation fault</FONT> <BR><FONT
size=2>GRASS 6.0.2 (spearfish60):~ > </FONT></P>
<P><FONT size=2>"Do you know that you must set the region to match the
elevation.dem first (g.region rast=elavation.dem) for NVIZ (and most any other
display module) to be able to display it?"</FONT></P>
<P><FONT size=2>I was not sure whether you were saying these were related and so
I followed the instruction with the following result.</FONT> </P>
<P><FONT size=2>GRASS 6.0.2 (spearfish60):~ > g.region
rast=elevation.dem</FONT> <BR><FONT size=2>GRASS 6.0.2 (spearfish60):~ > nviz
elev=elevation.dem</FONT> <BR><FONT size=2>Loading Data</FONT> <BR><FONT
size=2>Update elev null mask</FONT> <BR><FONT size=2>Loading Data</FONT>
<BR><FONT size=2>translating colors</FONT> <BR><FONT size=2>recalculating
normals...</FONT> <BR><FONT size=2>Segmentation fault</FONT> <BR><FONT
size=2>GRASS 6.0.2 (spearfish60):~ ></FONT> </P>
<P><FONT size=2>OK. Can you enlighten me as to the possible causes of the
Segmentation fault?</FONT> </P>
<P><FONT size=2>Very many thanks again for your help.</FONT> </P>
<P><FONT size=2>Darrel</FONT> </P></BODY></HTML>