[mapserver-users] geotiff 48bit with mapserver 7 wms

[Berger, Cora]

Dear Jukka,
you can find the original input-image of the wcs, an output image without any processing and an output image with processing scale=auto here: https://www.bscw.nrw.de/pub/bscw.cgi/7035084

Cora 


>-----Ursprüngliche Nachricht-----
>Von: Rahkonen Jukka (MML) [mailto:jukka.rahkonen at maanmittauslaitos.fi]
>Gesendet: Mittwoch, 19. April 2017 22:14
>An: Berger, Cora; 'mapserver-users at lists.osgeo.org'
>Betreff: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
>
>Hi Cora,
>
>Could you prepare a small sample image and put it somewhere for downloading?
>Or did you already do it in some earlier mail?
>
>-Jukka Rahkonen-
>
>________________________________________
>Lähettäjä: mapserver-users <mapserver-users-bounces at lists.osgeo.org> käyttäjän
>puolestaBerger, Cora <cora.berger at bezreg-koeln.nrw.de>
>Lähetetty: 19. huhtikuuta 2017 17:45
>Vastaanottaja: 'mapserver-users at lists.osgeo.org'
>Aihe: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
>
>Hi David,
>Thanks for your help. I tried PROCESSING "SCALE=AUTO". This method results in
>a red/white image. All the labels in the map are drawn red (originally black). The
>whole topographic information in the background is just white (originally many
>different colors). I tried it with a combination of different outputformat-declarations
>and processings. Unfortunately I didn't get a correct result.
>
>Cheers Cora
>
>
>>Message: 2
>>Date: Tue, 18 Apr 2017 14:07:04 +0000
>>From: David <david at impstyle.com>
>>To: "'mapserver-users at lists.osgeo.org'"
>>       <mapserver-users at lists.osgeo.org>
>>Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
>>Message-ID: <em2654a657-d1b7-4616-b1ae-3b1d6f8122f3 at laptop-dfriedrich>
>>Content-Type: text/plain; format=flowed; charset=utf-8
>>
>>Hi Cora,
>>
>>do you use PROCESSING "SCALE=AUTO" with you LAYER definition?
>>
>>SCALE[_n]=AUTO or min,max
>>This directive instructs the GDAL reader to pre-scale the incoming
>>raster data. It is primarily used to scale 16bit or floating point data
>>to the range 0-255, but can also be used to constrast stretch 8bit data.
>>
>>http://mapserver.org/input/raster.html#special-processing-directives
>>
>>Cheers David
>>
>>
>>------ Original Message ------
>>From: "Berger, Cora" <cora.berger at bezreg-koeln.nrw.de>
>>To: "'mapserver-users at lists.osgeo.org'"
>><mapserver-users at lists.osgeo.org>
>>Sent: 4/18/2017 10:47:42 AM
>>Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
>>
>>>Dear David, Steve, Ben, etc.
>>>I am working with MapServer-WCS. I still have problems defining the
>>>correct output formats. Input to most of our WCS are 8bit Geotiffs. The
>>>MapServer WCS-output is either tiff, png or jpeg with 24bit or
>>>Png;mode=8bit with 8 bit (if no output format is defined). The
>>>png;mode=8bit-format changes the imagecolours, so it isn't really
>>>useful. I can't get a colored 8bit Geotiff as output (a 8bit-definition
>>>always results in greyscale images). I tried different output
>>>format-definitions, none of them worked. I can define a palette for the
>>>png-format, but unfortunately not for any other format.
>>>For our WCS it is important that the output-data looks the same like
>>>the input-data. It seems that at the moment MapServer can't just pass
>>>the input-data through... This might be a GDAL issue...
>>>
>>>So if you find a way to define your wished output-format, please share
>>>it, maybe it helps me, too. Maybe anybody else has an idea?
>>>
>>>Cora
>>>
>>>
>
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