[GRASSLIST:6916] r.out.gdal TYPE questions

[Dylan Beaudette]

Hi everyone,

Lately I have needed to use the r.out.gdal command to export some GRASS 
rasters to ArcGIS (yes i know...).

The raster files are FCELL ranging from 0.3 - 0.7. 

I am not quite sure which 'type' would therefore be appropriate when running 
r.out.gdal.

I have tried the obvious 'Float32', but the resulting Geotiff file has a data 
range of "nan" to "nan" as reported by QGIS...

gdalinfo also fails to report minimum and maximum valuesin the exported 
geotiff... however it does return something that looks like the actual data 
vales in the "Metadata":

----------------------------------------------------------------------------
Band 1 Block=580x3 Type=Float32, ColorInterp=Gray
  NoData Value=nan
Metadata:
  COLOR_TABLE_RULES_COUNT=5
  COLOR_TABLE_RULE_RGB_0=3.388326e-01 4.277979e-01 0 191 191 0 255 0
  COLOR_TABLE_RULE_RGB_1=4.277979e-01 5.167632e-01 0 255 0 255 255 0
  COLOR_TABLE_RULE_RGB_2=5.167632e-01 6.057284e-01 255 255 0 255 127 0
  COLOR_TABLE_RULE_RGB_3=6.057284e-01 6.946937e-01 255 127 0 191 127 63
  COLOR_TABLE_RULE_RGB_4=6.946937e-01 7.836590e-01 191 127 63 20 20 20
----------------------------------------------------------------------------

Is there any way to export an FCELL raster to a  GeoTiff without loosing this 
information?

thanks!

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341