[gdal-dev] Colored images from grayscale images.

[Even Rouault]

Just to mention that the gdaldem utility, that has landed into GDAL 1.7.0dev 
trunk, is derived from Matt Perry dem tools (derived themselves from 
ancient - public domain - GRASS code ;-)). You can grab it here : 
http://trac.osgeo.org/gdal/browser/trunk/gdal/apps/gdaldem.cpp. It should 
compile fine against GDAL 1.6.X.

Le Wednesday 08 July 2009 20:47:56 Belaid MOA, vous avez écrit :
> Thank you very much Andre for your help. I tried downloading the source
> code from the website
> http://www.perrygeo.net/download/gdaldemtools_20060207.zip but I am getting
> a 404 error: resource not found. Is there any other way to get the source
> code?
>
>  Thanks a lot in advance Andre.
> Belaid Moa.
> Date: Wed, 8 Jul 2009 11:30:17 -0700
> Subject: Re: [gdal-dev] Colored images from grayscale images.
> From: randre at gmail.com
> To: belaid_moa at hotmail.com
> CC: gdal-dev at lists.osgeo.org
>
> As far as coloring goes, Matt Perry had some C++ tools that included this
> ability, see http://www.perrygeo.net/wordpress/?p=7 and look for
> color-relief.cpp.  I recall that there was some talk that these would be
> included in the GDAL utilities at some point, perhaps they already are. 
> Depending on what you intend to use the image for, I agree that using
> Mapserver might be the best solution for doing this, especially since
> generating the legend would be trivial.
>
> --
>
> On Wed, Jul 8, 2009 at 10:33 AM, Belaid MOA <belaid_moa at hotmail.com> wrote:
>
>
>
>
>
>
> Hi everyone,
>   Is there any easy way to do the following using C++ in GDAL: I have a
> floating-point image and I'd like to associate arbitrary colors with ranges
> of the pixel levels. For example: for the pixel values in [0,0.1) associate
> red, for [0.1, 0.2) associated orange, for [0.2, 0.3) associate light blue,
> for [0.3,0.4) associate dark blue, for [0.4, 0.5) associate green, etc. I
> would like also to have this information available in the metadata or as
> legend so that users know what the colors stand for when they view the
> image.
>
>
>  Thanks a lot in advance for any input.
>
>  With best regards.
> Belaid Moa.
>
>
>
> Create a cool, new character for your Windows Live™ Messenger.  Check it
> out
>
>
> _______________________________________________
>
> gdal-dev mailing list
>
> gdal-dev at lists.osgeo.org
>
> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>
>
> _________________________________________________________________
> We are your photos. Share us now with Windows Live Photos.
> http://go.microsoft.com/?linkid=9666047