[GRASS-user] Converting points to lines

[Bob Cooper]

Dylan,

Thank you. The conversions went great. 

Bob Cooper.

On Fri, 2006-12-08 at 10:45 -0800, Dylan Beaudette wrote:
> here are the examples I was thinking of:
> 
> awk 'BEGIN{print "VERTI:"; n = 0} {vertex = $6" "$7; if(  (n > 0 && n < 3) ) 
> {print "L 2\n"old_vertex"\n"vertex} else if(n >2
>  ) {print "L 2\n"old_vertex"\n"vertex}; old_vertex = vertex; ;n++}' walk1.raw 
> > walk1.ascii
> 
> 
> #save CAT in third column
> awk 'BEGIN{print "VERTI:"; n = 0} {vertex = $6" "$7; if(  (n > 0 && n < 3) ) 
> {print "L 2\n"old_vertex" " n"\n"vertex,n+1} els
> e if(n >2 ) {print "L 2\n"old_vertex" "n" \n"vertex,n+1}; old_vertex = 
> vertex; ;n++}' walk1.raw
> 
> 
> v.in.ascii in=walk1.ascii out=walk1_line fs=" " format="standard" columns='x 
> double precision,y double precision, cat int' ca
> tcol=0
> 
> 
> note that 'walk1.raw' is a dump from a garmin gps 12 - via gpstrans.
> 
> cheers,
> 
> Dylan
> 
> On Thursday 07 December 2006 22:26, Dylan Beaudette wrote:
> > Hi Bob,
> >
> > searching the archives reveals something posted by myself sometime
> > ago. note that it was somewhat of a hack using awk:
> >
> > http://grass.itc.it/pipermail/grassuser/2005-March/028092.html
> >
> > cheers,
> >
> > dylan
> >
> > On 12/7/06, Bob Cooper <bcoop at neaq.org> wrote:
> > > Hi,
> > > 6.2 is beautiful work.
> > > I have just upgraded to 6.2 from 5.4 on Linux. Is there a way to convert
> > > a points vector (imported sites file from 5.4) to a line vector?
> > >
> > > Thanks,
> > >
> > > Bob Cooper
> > >
> > >
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>