Hi Donovan and board Yes that Tim Sutton tutorial is very good.
I also found this one http://dirkraffel.com/2011/07/05/best-way-to-merge-color-relief-with-shaded-relief-map/ I ended up following this procedure and it has worked v well. I just setup a loop to use ImageMagik and combine the two images. And then reapplied the georeferencing using gdal_translate + world file. Thanks to all helped, it has made me aware of lots of other options that I may use in the future thanks again Tim On 21 February 2012 19:52, Donovan Cameron <sault....@gmail.com> wrote: > 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> >> > > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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