[Qgis-user] Batch contour extract

[maning sambale]

Dear Leandro,

Two steps I do:
1. Create a vrt of all the DEM files (gdalbuildvrt).
2. Extract contour from the VRT file (gdal_contour).

Both tools are available in the Raster menu.
You can also script this and run the process for each DEM file but you
will have separate contour layers that stops at the edge of your DEM
tile.  I want to avoid this which I why I use the VRT file.

A CLI version of this process I posted here:
http://epsg4253.wordpress.com/2013/02/08/building-contour-elevation-lines-with-gdal-and-postgis/



On Wed, Mar 12, 2014 at 10:13 PM, Leandro Girardin
<leandrogirardin at yahoo.com.ar> wrote:
> Hello. I need to perform a contorur extract of 41 raster hgt files, all with
> the same configuration. Is there any way of doing this automatically? Thank
> you in advance. Leandro.
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-- 
cheers,
maning
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"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
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