FW: [GRASS-user] Problem with Nviz : first post

[Prof Darrel Maddy]

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 

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