[GRASS-user] Looking for technique to equalize shading of adjacent Aster dem tiles

[Nick Jachowski]

Or maybe you could use the r.patch command to combine them into one raster
with one colortable.

On Mon, Jun 4, 2012 at 3:36 PM, Helmut Kudrnovsky <hellik at web.de> wrote:

> >One of my aims is to take a nice grayscale image to use in deforming mesh
> topology.  The circuit straddles >two tiles and the shading is markedly
> different.
> >
> >How can I either fix one or re-color both from scratch based on the
> elevation data?
>
> maybe build a virtual gdal data set [1] [2] of the Aster dem tiles, link
> [3]
> or import [4] them and use these tiles as one dem dataset for shading?
>
> [1] http://www.gdal.org/gdalbuildvrt.html
> [2] http://www.gdal.org/gdal_vrttut.html
> [3] http://grass.osgeo.org/grass64/manuals/html64_user/r.external.html
> [4] http://grass.osgeo.org/grass64/manuals/html64_user/r.in.gdal.html
>
> -----
> best regards
> Helmut
> --
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