[GRASS-user] i.spectral and gnuplot

[Stuart Edwards]

Hamish, Francesco

Back on this.  Thanks for the tips.  All were spot on.  Now just a  
little (?) glitch in the execution.  Script executes as it should if  
a 'group' is used.  However if a list of rasters is used instead, the  
following errors occur:

GRASS 6.1.cvs (locationA):~ > i.spectral raster=AST6,AST7,AST8 -i
csh: if: Malformed file inquiry.

Click mouse button on desired location

              EAST:             NORTH:
       748730.21875      3969381.53125 1
paste: data.dum: No such file or directory

gnuplot> set xtics ()
                     ^
          "spectrum.gnuplot", line 1: invalid expression

This looks like it could be a Rev 1.6 issue since that's when it  
first became possible to use a group instead of the raster list.

Thanks again.  Much learned!
Stuart

On Jun 28, 2006, at 3:23 AM, Hamish wrote:

> Stuart Edwards wrote:
>
>> After fearing for my sanity, I think I may have found the problem.
>> The script in Lorenzo's binary distribution is not the same as the
>> one that you pointed me to in spite of identical headers.  Attached
>> 'i.spectral' is from the distribution, 'i.spectral2' is the script at
>>   <http://freegis.org/cgi-bin/viewcvs.cgi/*checkout*/grass6/scripts/
>> i.spectral/i.spectral?rev=HEAD&content-type=text/plain>
>> The differences start at about line 51.
>
> you seem to have a version older than 11 May. here is the history:
>
> http://freegis.org/cgi-bin/viewcvs.cgi/grass6/scripts/i.spectral/ 
> i.spectral
>
>> Tomorrow I'll have a crack at this again using the correct version!
>> Gnuplot does open on command from the shell and GRASS_GNUPLOT = /sw/
>> bin/gnuplot.
>
>
> try
>
> GRASS_GNUPLOT="/sw/bin/gnuplot -persist"
> export GRASS_GNUPLOT
> i.spectral
>
> if /sw/bin/ is in your $PATH, then you don't need any of this.
> does "which gnuplot" work from the terminal prompt?
>
> perhaps add to ~/.grass.bashrc:
>
> GRASS_ADDON_PATH=/sw/bin
> export GRASS_ADDON_PATH
>
>
> Hamish