Have you reviewed the article from Tim Sutton: "A workflow for creating beautiful relief shaded dems using GDAL"[1]?
It has some valuable pointers. [1] http://linfiniti.com/2010/12/a-workflow-for-creating-beautiful-relief-shaded-dems-using-gdal/ Donovan On Tue, Feb 21, 2012 at 12:29 PM, Joaquim Luis <jl...@ualg.pt> wrote: > > > 5) Looked at GMT and I cannot find the options to load two rasters on top >> of each other. >> > > Tim, > > 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. > > http://gmt.soest.hawaii.edu/**gmt/html/GMT_Docs.html#x1-**1300007.5<http://gmt.soest.hawaii.edu/gmt/html/GMT_Docs.html#x1-1300007.5> > > > 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 > https://sites.google.com/site/**mironehowtos/basic/shade-**illuminations<https://sites.google.com/site/mironehowtos/basic/shade-illuminations> > > > ______________________________**_________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/**mailman/listinfo/gdal-dev<http://lists.osgeo.org/mailman/listinfo/gdal-dev> >
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