Hi Filipe.
You may consider running a gdalinfo -stats on your sampledata and report it
back so we can provide you additional assistance.
If datatype is not byte, you should consider using 3 ChannelSelect to
select R,G,B and a specific ContrastEnhancement node on each of them.
Then, based on the gdalinfo stats, you can setup a StretchToMinimumMaximum
(instead of ClipToMininumMaximum) in each ContrastEnhancement node.
Percentage referred by ESRI are based on histograms analysis, using
percentiles.
If you don't want to compute percentiles based on histograms, you can try
with MEAN and STDDEV (reported by gdalinfo -stats) and define your vendor
min and max values as:
min = MEAN - n*STDDEV
max = MEAN + n*STDDEV
where *n* is usually in the range 1 ; 3.
You can try with n = 2.
Please, let us know if that helps.
Regards,
Daniele
On Tue, Aug 1, 2017 at 4:01 PM, Filipe <[email protected]> wrote:
> seems theres some kind of error:
>
>
>
>
> --
> View this message in context: http://osgeo-org.1560.x6.
> nabble.com/Raster-Normalize-tp5330021p5330057.html
> Sent from the GeoServer - User mailing list archive at Nabble.com.
>
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--
Regards,
Daniele Romagnoli
==
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==
Ing. Daniele Romagnoli
Senior Software Engineer
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Italy
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