On Feb 22, 2012, at 8:42 AM, tim martin wrote: > 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
another option is ossim see http://trac.osgeo.org/ossim/wiki/ossim-dem Norman > > 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 > > > 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 > > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > 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 > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > 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
