[GRASS-user] Geology and GRASS

[Michael Barton]

Make a plane with r.plane. Open it and your DEM in nviz and see where they
intersect.

You could also use the map calculator (r.mapcalc) to create a new map of the
intersection of the 2.

r.mapcalc 'intersectmap = if(demmap = planemap,1,null())'

Michael


On 4/6/07 12:18 PM, "Luca Penasa" <luca.penasa at email.it> wrote:

> Im studiyng geology at the Padua University (It) and iv used GRASS for
> many porpouse: creating dem, analyse rasters, reproject maps, etc
> Now i would like to know what kind of possibilities offers grass for a
> geologist....
> Is there anybody who use grass for geology survey?? or for others kind
> of geology-related applications?
> 
> an example...
> if i have a DEM and the informations necessary to represent a plane (the
> dip and the direction)... is possible to trace the intersections of the
> plane with the dem???
> in others words...
> the plane i know represent a lithostratigraphic limit... and i want to
> trace the limit intersection with topography... how can i do?
> 
> What other things can i do with grass (about geology)??
> 
> Sorry for my english... its really poor
> 
> and Thanks..
> Luca Penasa
>  
>  
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__________________________________________
Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics and Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton