[GRASS-user] Peak point extraction from DEM

GRASS GRASS user
1

There used to be a perl script to generate map-calc code which might do what you are after.

Have a look at http://grass.gdf-hannover.de/wiki/GRASS_AddOns:

  • Local maxima is a Perl script for r.mapcalc . It detects local maxima of the image.
    Author: Jachym Cepicky
    **Usage:**
    local_maxima.pl -i input -o output -s matrix_size|r.mapcalc

The link is stale, but the author is still alive, so he might have the code.

HTH

Ludwig

2

Hey, great thanks Ludwig!

I’ll be sure to follow that trail, looks really helpful for the type of analysis work I’m doing.

I should really brush up on pearl scripting.

cheers!

Mars

On 2-Jul-07, at 7:03 AM, Ludwig M Brinckmann wrote:

There used to be a perl script to generate map-calc code which might do what you are after.

Have a look at http://grass.gdf-hannover.de/wiki/GRASS_AddOns:

  • Local maxima is a Perl script for r.mapcalc . It detects local maxima of the image.
    Author: Jachym Cepicky
    **Usage:**
    local_maxima.pl -i input -o output -s matrix_size|r.mapcalc

The link is stale, but the author is still alive, so he might have the code.

HTH

Ludwig

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