[GRASSLIST:682] Re: How to program a little script

[Jachym Cepicky]

Hi,
On Wed, Apr 12, 2006 at 09:21:01AM +0000, giglio.antonio at katamail.com wrote:
> First of all thank you for replying!
> I studied r.cost and r.walk, but still can't find a solution...
> 
> I try to use r.cost for creating a cost map, but it doesn't recognize coordinates in the format xx:xx:xx.x (i.e. 81:27:41.1 -N-).
> Anyway I don't know how (and if) that cost map can be used for what I need...
> 
> r.walk also seems to be useful, but I have troubles to realize which kind of cost map
> is the more suitable.
> 
> Thank you again,
> Antonio Giglio
> 

x=$( echo "103:41:40.67756" | sed "s/:/d/" | sed "s/:/'/" )
y=$( echo "44d24'44.649041" | sed "s/:/d/" | sed "s/:/'/" )

newcoords=$( echo $x $y | cs2cs +proj=latlong +to -f "%.4f" +proj=latlong | awk 'printf("%f,%f",$1,$2);'

echo $newcoords

Jáchym

> 
> 
> > Da: Hamish <hamish_nospam at yahoo.com>
> > Data: Fri, 7 Apr 2006 13:40:59 +1200
> > A: "giglio.antonio at katamail.com" <giglio.antonio at katamail.com>
> > Oggetto: [GRASSLIST:617] Re: How to program a little script
> >
> > > I have to program a little script that, starting from 2 points (A and
> > > B) on a raster map (a DEM), calculate first 3 shortest going-down
> > > paths (from A to B). It seems to be easy, but this is the first time i
> > > try to program GRASS and I don't know how to proceed.
> > 
> > 
> > see r.cost, r.walk
> > 
> > 
> > 
> > Hamish
> > 
> 
> 
> 

-- 
Jachym Cepicky                                  
e-mail: jachym.cepicky at centrum.cz           
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