Many thanks for your suggestions.
“What happens if you issue the ‘nviz elev=elevation.dem’ from CLI?”
“Please copy/paste the text output here (tcltk GUI tends to hide some low level errors, like segfault, from the user).”
GRASS 6.0.2 (spearfish60):~ > nviz elev=elevation.dem
Loading Data
Loading Data
translating colors
recalculating normals…
Segmentation fault
GRASS 6.0.2 (spearfish60):~ >
“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?”
I was not sure whether you were saying these were related and so I followed the instruction with the following result.
GRASS 6.0.2 (spearfish60):~ > g.region rast=elevation.dem
GRASS 6.0.2 (spearfish60):~ > nviz elev=elevation.dem
Loading Data
Update elev null mask
Loading Data
translating colors
recalculating normals…
Segmentation fault
GRASS 6.0.2 (spearfish60):~ >
OK. Can you enlighten me as to the possible causes of the Segmentation fault?
Very many thanks again for your help.
Darrel