[mapserver-users] AGG_Q + raster problem

[Brent Fraser]

So when you remove all the quantize options, you still get a quantized
image on output?  Using something like:

  OUTPUTFORMAT
   NAME 'AGG_PNG'
   DRIVER AGG/PNG
   IMAGEMODE RGB
  END



> This, by example
>
>
> -----Mensaje original-----
> De: Guillaume Sueur [mailto:guillaume.sueur at neogeo-online.net]
> Enviado el: lunes, 18 de febrero de 2008 19:04
> Para: Hans Castorp; mapserver-users at lists.osgeo.org
> Asunto: Re: [mapserver-users] AGG_Q + raster problem
>
> what's the result in standard AGG mode ?
>
> Hans Castorp a écrit :
>> The result is the same with or without this line...
>>
>>
>> -----Mensaje original-----
>> De: Guillaume Sueur [mailto:guillaume.sueur at neogeo-online.net]
>> Enviado el: lunes, 18 de febrero de 2008 18:59
>> Para: Hans Castorp
>> CC: mapserver-users at lists.osgeo.org
>> Asunto: Re: [mapserver-users] AGG_Q + raster problem
>>
>> quantize_colors=255 is maybe the reason why your colors are reindexed on
>> a 256 colors palette.
>>
>> Hans Castorp a écrit :
>>> Thanks Brent, but there is a mistake, the example I attached is not the
>>> mapservers original output: I have prepared it and give .gif extensión.
>>>
>>> This is the way I configure my output:
>>>
>>>   OUTPUTFORMAT
>>>     NAME 'AGG_Q'
>>>     DRIVER AGG/PNG
>>>     IMAGEMODE RGBA
>>> 	FORMATOPTION "TRANSPARENT=ON"
>>>     FORMATOPTION "QUANTIZE_FORCE=ON"
>>>     FORMATOPTION "QUANTIZE_DITHER=OFF"
>>>     FORMATOPTION "QUANTIZE_COLORS=255"
>>>   END
>>>
>>> Thanks in advance.
>>>
>>>
>>>
>>>
>>> -----Mensaje original-----
>>> De: Brent Fraser [mailto:bfraser at geoanalytic.com]
>>> Enviado el: lunes, 18 de febrero de 2008 18:17
>>> Para: Hans Castorp
>>> CC: mapserver-users at lists.osgeo.org
>>> Asunto: Re: [mapserver-users] AGG_Q + raster problem
>>>
>>> Hans,
>>>
>>>   GIF supports only 256 colors.  Use PNG (or JPG) for an output format.
>>>
>>> Brent Fraser
>>>
>>>> Hi to all,
>>>>
>>>>
>>>>
>>>> I’m trying to publish a cartography using both vectorial and raster
>>>> layers.
>>>> I’m using mapserver 5 and agg_q as output format. There is no problem
>>>> about
>>>> vectorial files (shapefiles): all work fine.
>>>>
>>>> The only problem I’m having is trying to publish some raster stuff: an
>>>> aerial photo (.geotiff) and a digital terrain model (.ecw). I’m not
>>>> capable
>>>> to make the output showing real colours; there is an example attached
>>>> to
>>>> this mail (an aerial photo).
>>>>
>>>>
>>>>
>>>> My mapfile looks in this way:
>>>>
>>>>
>>>>
>>>> LAYER
>>>>         NAME "MDT"
>>>>         STATUS DEFAULT
>>>>         GROUP "MDT"
>>>>         TYPE raster
>>>>         DATA "mdt.tif"
>>>>         CLASS
>>>>                MINSCALE 15000
>>>>         END
>>>> END
>>>>
>>>> LAYER
>>>>         NAME "ORTOFOTO"
>>>>         STATUS DEFAULT
>>>>         GROUP "ORTOFOTO"
>>>>         TYPE raster
>>>>         DATA "ortofoto.ecw"
>>>>         CLASS
>>>>                MAXSCALE 15000
>>>>         END
>>>> END
>>>>
>>>>
>>>>
>>>> What I have to do to solve this?
>>>>
>>>>
>>>>
>>>> Thanks in advance to everyone.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Hans Castorp
>>>
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>>
>
> --
> Guillaume SUEUR
> Expert SIG et OpenSource
> NEOGEO
> 46 RUE MATABIAU
> 31000 TOULOUSE
> 06 74 91 95 20
> Site web : http://www.neogeo-online.net
>
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> 18/02/2008
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>
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> Checked by AVG Free Edition.
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> 18/02/2008
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