Thanks, Jukka. The second part of my question relates to floating point
images. I don't think that MapServer can handle 3-band floating point
images because I can't seem to find anything in the documentation and I
have tried a couple of things that don't work. I suppose the best thing
would be to convert them to 3-band, 8-bit images.
===========================
David V. Hildebrand
Agriculture Financial Services Corporation
(403) 782-8239
-----Original Message-----
From: Rahkonen Jukka [mailto:[email protected]]
Sent: Wednesday, January 05, 2011 10:07 AM
To: David Hildebrand
Cc: [email protected]
Subject: Re: [mapserver-users] GDAL input formats
Hi,
Have you already read the ENVI part of the following document?
http://gdal.org/frmt_various.html#ENVI
-Jukka Rahkonen-
David Hildebrand wrote:
Frank:
As you are probably aware, ENVI image files are associated with a
header
file which has a "hdr" extension. The extension of the actual image
file can be anything but the root name of the image file and header file
must be the same. If I specify the HDR file on the DATA line of my map
file there may be more than one file in the same workspace which are
candidate image files. If I specify the name of the image file, which
can have any or no extension, I don't see how the system can figure out
the format. Is there a particular extension which is assumed by GDAL
for the image file?
Thanks.
===========================
David V. Hildebrand
Agriculture Financial Services Corporation
(403) 782-8239
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Frank
Warmerdam
Sent: Tuesday, January 04, 2011 5:33 PM
To: [email protected]
Subject: Re: [mapserver-users] GDAL input formats
On 11-01-04 03:14 PM, David Hildebrand wrote:
I'm wondering how to specify a particular GDAL format. I have some
3-band floating point images in ENVI format and I would like to retain
that format because I have GDAL support. Secondly, would it be better
to convert them to GeoTiff files? Would it also be better to scale
them
to, say 16-bit signed integer files?
David,
I searched back a bit in the archive, but I couldn't find any leadup
discussion to the above. It seems to lack context.
So, you have 3band floating point images in ENVI format and you would
like to retain that format. Is there something holding you back?
You said you don't know "hjow to specify a particular GDAL format". Do
you mean when you are generating output via GDAL such as with WCS? Or
do you mean how you tell MapServer what format an input file is in?
You don't have to tell MapServer (or GDAL) what format a file is in.
It figures it out - assuming it is a supported format.
Does that help?
Best regards,
--
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------
I set the clouds in motion - turn up | Frank Warmerdam,
[email protected]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent
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