[gdal-dev] Re: Hillshade + Topographic Map??
sault.don at gmail.com
Tue Feb 21 14:52:33 EST 2012
Have you reviewed the article from Tim Sutton: "A workflow for creating
beautiful relief shaded dems using GDAL"?
It has some valuable pointers.
On Tue, Feb 21, 2012 at 12:29 PM, Joaquim Luis <jluis at ualg.pt> wrote:
> 5) Looked at GMT and I cannot find the options to load two rasters on top
>> of each other.
> You don't load the two grids on top of one-another. Illumination is NOT
> like transparency. It uses the gradients of the grid, projects it into the
> direction of light and than change the color in the HSV space (the
> S(aturation) component) and converts back to RGB
> The links that I sent you have the scripts used to produce the figures.
> You can also look at this one for a very simple illumination in bw, but the
> procedure for color illumination is exactly the same.
> 6) MIRONE - again cannot see how to do this from within the application.
> Well, I can give you a 'click-recipe' if you want, but Mirone won't be
> able to deal with the such big grids as yours.
> Anyway, here is a step-by-step example
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the gdal-dev