THX for the info ... Let's see how accurate
the forecast for Frances is [gfs_00_panel.gif]
>
>My method first was to produce .ps then convert using
>Imagemagick to .gif. But it is very slow for a lot of
>images. I am now using the following method, which is
>at least twice as fast:
>1- I produce maps using ngcm NCL driver
>2- Convert to gif using : ncgm2gif -res 1362x1362
>file.ncgm
>3- Then, scale back the image using:
>convert -interlace none -geometry 600x600 file.gif
>filesm.gif
>4- Crop the whitespace:
>mogrify -crop 0x0 filesm.gif
>
>This is much faster than going through postscript. I
>am also producing, with the same ncgm file, a smaller
>version for panels output, e.g. using:
>ncgm2gif -res 862x862 file.ncgm
>and then
>convert -interlace none -geometry 380x380 file.gif
>filevsm.gif
>
>Examples:
>http://meteocentre.com/models/gfs_long_amer_00/
>http://meteocentre.com/models/gfs_long_amer_00/gfs_00_panel.gif
>
>Cheers,
>
>Christian Pagé
>UQAM
>
> --- Hauss Reinbold <reinbold@dri.edu> a écrit :
>> Hello all,
>>
>> I'm working on taking model output on an operational
>> basis and
>> displaying it on the web. If I'm using NCL to
>> create the graphics
>> (850mb height maps, etc.), what is the best and
>> fastest method to get
>> it to a gif or jpg format? I use Imagemagick's
>> convert to go from
>> postscript to jpg or gif, but the process is slow
>> (at least at the
>> density I would like the graphics at) and using
>> going the ngcm through
>> ctrans route yields a graphics quality I am not
>> happy with. I would
>> like post-processing to take less time than the
>> model run, but I don't
>> want to sacrifice image quality too much. I know
>> this may not be
>> possible, but I am determined to get the fastest
>> conversion time
>> possible with the highest possible image quality. I
>> have done a lot of
>> research on this already, but I'm curious as to what
>> some of you would
>> suggest as the fastest way to get from NCL
>> postscript plot to jpg or
>> gif without sacrificing image quality. Obviously
>> this is a somewhat
>> subjective assessment. I realize this may be a
>> little off-topic as
>> it's not strictly NCL related, but I would
>> appreciate any advice any of
>> you might have. Thanks.
>>
>> Hauss Reinbold
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk@ucar.edu
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>
>=====
>------------
>Christian Pagé
>
>__________________________________________________________
>Lèche-vitrine ou lèche-écran ?
>magasinage.yahoo.ca
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