Hi Christian,

thank you for the suggestion!

I have upgraded to 10.1 and the situation is a bit better, but I am still
having a problem with my 32bit raster, albeit a slightly different one - all
I can see now is a solid black image filling an entire image area in the
Layer Preview.

It looks to me as rescaleImage still doesn't rescale single band 32 bit
raster image correctly: if I check image properties after rescale operation,
the underlying raster contains all '0' values. 

Here is what I tried so far in an attempt to diagnose the problem:
* exported raster into a .tiff file and reimported it into GeoServer using
GeoTiff plugin - it appears to work fine (i.e I can see expected
visualisation in the Layer Preview and featureinfo displays correct
information).
* commented out ImageComposerThread.rescaleImage - Layer Preview displays
raster correctly (as long as I don't zoom out)
* tried to create GridCoverage2D using GridCoverageFactory.create() method
that accepts MathTransform and using this transform to scale instead of
rescaling the image beforehand (this approach doesn't work with zoom out
either)

Since I am no expert in image processing or coverages, I am not sure how
best to fix this.

I may be doing something unconventional when creating my raster, so, just in
case, here is a list of sql commands I use to create test data:



Thanks
Nat

( I am using geoserver 2.4.1 and geotools 10.1 version)



Christian Mueller-3 wrote
> Some weeks ago, I did some major changes. Please switch to the lastest
> version or check out trunk from github.
> 
> Christian
> 
> 
> On Thu, Oct 31, 2013 at 12:45 PM, Andrea Aime
> <

> andrea.aime@

> >wrote:
> 
>> On Thu, Oct 31, 2013 at 12:34 PM, nroberts <

> nataliya_roberts@.com

> >wrote:
>>
>>> Hi Christian,
>>>
>>> I am using 9.5.
>>>
>>> I checked trunk svn a few weeks back (assuming this is a correct
>>> location
>>> for it:
>>>
>>> http://svn.osgeo.org/geotools/trunk/modules/plugin/imagemosaic-jdbc/src/main/java/org/geotools/gce/imagemosaic/jdbc
>>> )
>>> and didn't spot any changes in the code in comparison to my my 9.5
>>> version.
>>> Should I try version 10+?
>>>
>>
>> Way off the mark I'm afraid, GeoTools has not been using svn for a long
>> time now.
>> The sources are on github:
>> https://github.com/geotools/geotools
>>
>> Cheers
>> Andrea
>>
>> --
>> ==
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>> @geowolf
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>>
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>>
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>>
>>
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> 
> 
> -- 
> DI Christian Mueller MSc (GIS), MSc (IT-Security)
> OSS Open Source Solutions GmbH
> 
> ------------------------------------------------------------------------------
> Android is increasing in popularity, but the open development platform
> that
> developers love is also attractive to malware creators. Download this
> white
> paper to learn more about secure code signing practices that can help keep
> Android apps secure.
> http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk
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------------------------------------------------------------------------------
Android is increasing in popularity, but the open development platform that
developers love is also attractive to malware creators. Download this white
paper to learn more about secure code signing practices that can help keep
Android apps secure.
http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk
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