Funny, I made it nodata = 1 and the zero moved to second place. [cid:image002.jpg@01D603C5.0A070080]
From: Even Rouault <even.roua...@spatialys.com> Sent: Thursday, March 26, 2020 8:47 PM To: gdal-dev@lists.osgeo.org Cc: Joaquim Manuel Freire Luís <jl...@ualg.pt> Subject: Re: [gdal-dev] Issue with writen colortables On jeudi 26 mars 2020 19:58:52 CET Joaquim Manuel Freire Luís wrote: > images created with GMT but via GDAL. > The .tif file looks right but if look at the .png (it needs lots of zoom) we > can see that the top left pixel is missing. That happens, I think, because > the transparency column has a first value of 0 whilst all the others are > 1's. I checked this both with You should probably not set the nodata value to 0. This will cause the alpha component for entry 0 of the color table to be set to 0 when writing PNG Even -- Spatialys - Geospatial professional services http://www.spatialys.com
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