[GRASS-user] [GRASSLIST:1177] Re: Buffer distance map around points.

[Dylan Beaudette]

Or, 

try r.cost with a constant cost function

i.e. in the spearfish sample dataset:

#make a raster with constant value
r.plane name=const elevation=1 type=int easting=593786.1875 
northing=4919369.0625

#calculate distance from bugsites
r.cost -k in=const out=bugsites_dist start_points=bugsites

#quantize as required
r.reclass ....

see attached

Cheers,


On Wednesday 16 August 2006 13:53, Jachym Cepicky wrote:
> hi,
>
> just try r.buffer && r.to.vect
>
> jachym
>
> On Wed, Aug 16, 2006 at 03:36:20PM -0500, David Jaramillo wrote:
> > Hi everyone,
> >
> > I have tested v.buffer but i can't get several buffers, just only one. I
> > attach an image that show you what i need.
> >
> > Thanks a lot.
> >
> > On 3/14/06, Luca Casagrande <luca.casagrande at gmail.com> wrote:
> > >Hi and welcome to GRASS ml!
> > >For your problem, the starting point is this:
> > >
> > >http://grass.itc.it/grass61/manuals/html61_user/v.buffer.html
> > >
> > >For this problem, you could also use the GRASS plugin inside QGIS...
> > >
> > >Luca
> > >
> > >Alle 03:50, martedì 14 marzo 2006, David Jaramillo ha scritto:
> > >> Hi everyone,
> > >>
> > >> I'm new in Grass, i have a vector map with points, and i need to
> > >
> > >create  a
> > >
> > >> new (buffer) map that groups with colors the ranges of distance from
> > >
> > >each
> > >
> > >> point.
> > >>
> > >> What commands and parameters can i use ?
> > >>
> > >> Thanks,
> > >
> > >--
> > >"E' molto più bello sapere qualcosa di tutto, che tutto di una cosa
> > >(Blaise
> > >Pascal)."
> > >
> > >GENTOO-GIS Development Team
> > >jabber: casagrande at jabber.linux.it

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341
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