[GRASS-user] d.out.file format=png file malformed

[Dave Roberts]

Hi Anna,

    I hadn't tried gimp yet so I installed it to see.  Works fine in 
both gimp and Imagemagick, so I guess it's an xfig thing.  I'm running 
xfig 3.2.5c which is only slightly newer than yours, but maybe that 
broke it.

Thanks, Dave

On 07/18/2014 01:00 PM, Anna Petrášová wrote:
> Hi,
>
>
> On Fri, Jul 18, 2014 at 1:56 PM, Dave Roberts
> <dvrbts at ecology.msu.montana.edu <mailto:dvrbts at ecology.msu.montana.edu>>
> wrote:
>
>     Friends,
>
>          I'm using GRASS 70-svn on Arch linux to generate figures for a
>     report.  The general process is
>
>     1) GRASS - d.out.file format=png
>     2) xfig - import the PNG file, annotate, and export as PDF
>     3) TeX - import the file in a dvipdfm \special
>
>         However, I'm now having problems with non-functional PNG files
>     from d.out.file.  Just below is a paste from my console.  You can't
>     see the error from inside xfig, but the line just below "xfig" is
>     the stderr output from attempting to import demo_png.png.
>
>     ******************************__******************************__***********
>     GRASS 7.0.svn > d.out.file out=demo_png.png format=png size=800,600
>
>                                    Mapset <final> in Location <beartooth>
>     GRASS 7.0.svn > xfig
>     Warning: translation table syntax error: Missing '(' while parsing
>     action sequence
>     'arning: ... found while parsing ':~Ctrl<Key>1: insert-string(1)
>     Warning: String to TranslationTable conversion encountered errors
>     libpng error: invalid file gamma in png_set_gamma
>     ******************************__******************************__***********
>
>         The resulting PNG file will import into Imagemagick OK, and can
>     then be exported back out as a PNG file which xfig will accept, so
>     there is a work around, but maybe this is easily fixed?  I've had a
>     look at Anna's python script but haven't gone into the imported modules.
>
>
> I have never had any problems with exported images from GRASS.
> d.out.file uses the same mechanism as when you use the toolbar button in
> map display. I tried to get the png into xfig and it didn't complain
> (xfig version 3.2.5b). Any other image processing tools have problems
> (e.g. gimp)?
>
> Anna
>
>
>     Thanks, Dave
>     --
>     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~__~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~__~~~~~~~~~~~~
>     David W. Roberts                                     office
>     406-994-4548 <tel:406-994-4548>
>     Professor and Head                                      FAX
>     406-994-3190 <tel:406-994-3190>
>     Department of Ecology                         email
>     droberts at montana.edu <mailto:droberts at montana.edu>
>     Montana State University
>     Bozeman, MT 59717-3460
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>

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
David W. Roberts                                     office 406-994-4548
Professor and Head                                      FAX 406-994-3190
Department of Ecology                         email droberts at montana.edu
Montana State University
Bozeman, MT 59717-3460