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

[Stephen Woodbridge]

http://mapserver.org/mapfile/outputformat.html

Why not serve them a GTiff format for qgis?

You can define multiple output formats in the mapfile, and let the 
browser use the 8bit png and have qgis request images in gtiff format.

-Steve

On 4/13/2017 11:03 AM, David wrote:
> Hi Steve,
> 
> thank you very much for your help. The Mapserver is serving the tiles 
> with the correct RGB values now. The problem is, that it is serving 8 
> bit per band and not 16 bit.
> I need the 16bit because i want to use the wms as a base layer for some 
> further processing with qgis or another gis client. So no problem 
> regarding browsers for me.
> 
> I will take a look and change the data type to float32 for the tiff 
> files. At least this is an supported OUTPUTFORMAT for mapserver.
> Any suggestions on this matter are highly appreciated.
> 
> Cheers,
> David
> 
> ------ Original Message ------
> From: mapserver-users-request at lists.osgeo.org
> To: mapserver-users at lists.osgeo.org
> Sent: 4/12/2017 4:00:02 PM
> Subject: mapserver-users Digest, Vol 111, Issue 5
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>>    1. geotiff 48bit with mapserver 7 wms (David)
>>    2. Re: geotiff 48bit with mapserver 7 wms (Stephen Woodbridge)
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>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Wed, 12 Apr 2017 00:22:12 +0000
>> From: David <david at impstyle.com>
>> To: mapserver-users at lists.osgeo.org
>> Subject: [mapserver-users] geotiff 48bit with mapserver 7 wms
>> Message-ID: <em5ce0e1b3-00b1-463e-8ad8-90100518d131 at laptop-dfriedrich>
>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>
>> Hi there,
>>
>> iam having some trouble to serve 48 bit geotiff images with a mapserver
>> 7 wms. I created to layers for speed purposes with scale limiters. The
>> lowres layer is served well and looks good, it is 24bit geotiff
>> data(8bit per channel). But if the layer changes to the highres, 48bit
>> geotiff data(16bit per channel), the data is shown wrong.
>> I searched for some hints regarding a similar issue but could not find
>> something.
>>
>> This is a screenshot of the loaded highres layer. It does not matter if
>> i load a bbox inside the browser, qgis or another wms client. The
>> highres data looks always the same.
>>
>> image loaded from highres layer:
>> http://imgur.com/a/B65cp
>>
>> the mapfile:
>> https://pastebin.com/4G2DZErZ
>>
>> the gdalinfo for one 16bit 3-band tile:
>> https://pastebin.com/kfS0BjmE
>>
>> Best Regards,
>> David
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>> ------------------------------
>>
>> Message: 2
>> Date: Tue, 11 Apr 2017 21:25:01 -0400
>> From: Stephen Woodbridge <woodbri at swoodbridge.com>
>> To: mapserver-users at lists.osgeo.org
>> Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
>> Message-ID: <a7bc734d-f7b9-32f3-5ce0-6a71aab4ead4 at swoodbridge.com>
>> Content-Type: text/plain; charset=utf-8; format=flowed
>>
>> Read this:
>> http://mapserver.org/input/raster.html
>>
>> You need to add to your highres layer
>>
>> PROCESSING "SCALE=AUTO"
>>
>> Or per band scaling. I done thing most browsers know what to do with 16
>> bits per channel.
>>
>> -Steve W
>>
>> On 4/11/2017 8:22 PM, David wrote:
>>>  Hi there,
>>>
>>>  iam having some trouble to serve 48 bit geotiff images with a mapserver
>>>  7 wms. I created to layers for speed purposes with scale limiters. The
>>>  lowres layer is served well and looks good, it is 24bit geotiff
>>>  data(8bit per channel). But if the layer changes to the highres, 48bit
>>>  geotiff data(16bit per channel), the data is shown wrong.
>>>  I searched for some hints regarding a similar issue but could not find
>>>  something.
>>>
>>>  This is a screenshot of the loaded highres layer. It does not matter if
>>>  i load a bbox inside the browser, qgis or another wms client. The
>>>  highres data looks always the same.
>>>
>>>  image loaded from highres layer:
>>>  http://imgur.com/a/B65cp
>>>
>>>  the mapfile:
>>>  https://pastebin.com/4G2DZErZ
>>>
>>>  the gdalinfo for one 16bit 3-band tile:
>>>  https://pastebin.com/kfS0BjmE
>>>
>>>  Best Regards,
>>>  David
>>>
>>>
>>>  _______________________________________________
>>>  mapserver-users mailing list
>>>  mapserver-users at lists.osgeo.org
>>>  https://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>
>>
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