I did not reply after my latest test, sorry.
I tried all tiff IMAGEMODE for my data set. None gave me 16 bit at the gis
client.
As far as I understand gtiff is 8 bit.
The only IMAGEMODE for integer is signed INT16 , which is unfortunately the
only supported integer data type. For RGB data unsigned integer is the only
integer data type that makes sense. Just if i change the IMAGEMODE to
FLOAT32 mapserver will serve more than 8 bit per band.
I think i will give gdal and float32 bit a try nevertheless it will double
the image size.
Maybe someone else has an idea.
On April 14, 2017 1:43:09 PM Stephen Woodbridge <wood...@swoodbridge.com>
wrote:
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
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1. geotiff 48bit with mapserver 7 wms (David)
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Message: 1
Date: Wed, 12 Apr 2017 00:22:12 +0000
From: David <da...@impstyle.com>
To: mapserver-users@lists.osgeo.org
Subject: [mapserver-users] geotiff 48bit with mapserver 7 wms
Message-ID: <em5ce0e1b3-00b1-463e-8ad8-90100518d131@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 <wood...@swoodbridge.com>
To: mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] geotiff 48bit with mapserver 7 wms
Message-ID: <a7bc734d-f7b9-32f3-5ce0-6a71aab4e...@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
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