[GRASS-dev] nviz with reclass files

Helena Mitasova hmitaso at unity.ncsu.edu
Tue Sep 1 18:50:00 EDT 2009

I just tried in on wingrass and it has the same problem - it actually  
drapes the raster over the surface but then it gets stuck.

Reclass rasters should probably go away in future releases but they  
are from the times
when disk space was valuable. Such rasters are derived by  
reclassification of another map
  and only the reclass table is stored - but if you accidentally
remove the original raster you practically lose your reclassed map as  

landclass96 is a reclass of landuse96_28m which is in PERMANENT,
I will double check the original raster but it runs fine in GRASS63.
You are right that it would be useful to generate some other reclass  
maps to test
whether this is a data issue or a new bug in nviz,

thanks for trying it,


On Sep 1, 2009, at 5:36 PM, Jeshua Lacock wrote:

> On Sep 1, 2009, at 7:48 AM, Helena Mitasova wrote:
>> can you please test one additional nviz issue?
>> with nc_spm_08 data set, what happens when you run
>> g.region rast=elevation
>> nviz elevation col=landclass96
>> this used to run, but now I get:
>> Warning: loading failed
>> landclass96 is a reclass raster, making it regular raster, fixes  
>> the problem.
>> It used to run, so I am not sure whether there is a problem with my  
>> data set
>> or with my version of GRASS (I am using William's grass64 binary).
> Hi Helena,
> I just did and I got the same error, so it is safe to say that it is  
> not because of William's binaries.
> I am not familiar with a "reclass raster", have you attempted to use  
> another reclass raster?
> Best,
> Jeshua Lacock, Owner
> <http://OpenOSX.com>
> phone: 208.462.4171

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