[gdal-dev] Re: Hillshade + Topographic Map??

[Donovan Cameron]

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 <jluis at 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>
>
>
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