[gdal-dev] Convert false-color single band tiff to png

[Paul Meems]

Thanks Even,

I did look at the -scale switch but probably not correct.
This is working:
gdal_translate -of PNG -ot Byte -scale my.tif my.png

Regards,

Paul

2017-05-09 14:28 GMT+02:00 Even Rouault <even.rouault at spatialys.com>:

> On mardi 9 mai 2017 14:25:58 CEST Paul Meems wrote:
>
> > I'm having trouble converting a false-color single band tiff to png.
>
> >
>
> > Most of my tiff-files I can convert using GdalDem and a color table, this
>
> > works great.
>
> > But some tiff-files are pre-processed and I need to convert them as is.
>
> >
>
> > This is the tiff:
>
> > [image: Inline afbeelding 1]
>
> >
>
> > I tried with gdal_translate:
>
> > gdal_translate -of PNG my.tif my.png
>
> > But then I get a mostly white png. I also tried several other options.
>
> > The range of the tiff-file is from 1842 - 2636.
>
> > Does this mean I'm bound to use a color table file and use GdalDem or is
>
> > another solution possible?
>
>
>
> Look at the -scale switch of gdal_translate
>
>
>
> >
>
> > The tiff-files are send to my from an outside source I have no control
>
> > about them.
>
> > I need the png-files because I'm showing the files in OpenLayers.
>
> >
>
> > How can I do the conversion properly?
>
> >
>
> > Thanks,
>
> >
>
> > Paul Meems
>
>
>
>
>
> --
>
> Spatialys - Geospatial professional services
>
> http://www.spatialys.com
>
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