[GRASS-user] Peak point extraction from DEM

[Hamish]

Amagine wrote:
> Hello, I am trying to extract peak points from a digital elevation
> map.
> 
> I would like to be able to regulate the following parameters:
> 
> Minimum height of peak
> Minimum drop of surrounding peaks
> Minimum radius from surrounding peaks
> summit points
> optional hierarchy...
> 
> Are there any tools in GRASS that may be able to do such an
> extraction?

see wish about calculating topographic prominence:
  http://thread.gmane.org/gmane.comp.gis.grass.user/19166/focus=19173

linked wikipedia article: "The underlying mathematical theory is called
"Surface Network Modeling," and is closely related to Morse Theory."

if there is any interested topogapher in the house...



Hamish