Hi Filipe,
Note that you have computed the stats on the tif file whilst you should
have computed them on the VRT which has been setup to modify the nodata.

1) remove the auxiliary file
rm raster.tif.aux.xml
2) create a vrt (so no need to rewrite a new tif file), by replacing the
nodata.
gdal_translate -OF VRT -a_nodata 0 raster.tif raster.vrt
3) compute stats and histogram on VRT ... not on TIF.
gdalinfo -hist -stats raster.*vrt *

Please, let me know if you get a different result with these steps.
(it should exclude pixels with value = 0 so you will get different bin
distributions and therefore, different stats and hist).

Cheers,
Daniele



On Wed, Aug 2, 2017 at 4:21 PM, Filipe <[email protected]> wrote:

> hello.
>
> First of all, thank you for your patience. Its much apreciated!
>
> followed what you sugested... but must gave done something wrong.
>
> the current hist on the tif
>
> the mean and stddev values are the same as before
>
> now the percentiles are:
>
>
> on the viewer, the same results. both on geoserver and qgis
>
>
>
>
> --
> View this message in context: http://osgeo-org.1560.x6.
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-- 
Regards,
Daniele Romagnoli
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