[GRASSLIST:904] Re: Planning swath bathymetry surveys

Maciek Sieczka werchowyna at epf.pl
Wed Apr 26 14:02:56 EDT 2006


On Wed, 26 Apr 2006 15:23:39 +1200
Hamish <hamish_nospam at yahoo.com> wrote:

> > > 1) "It appears that v.buffer buffers the nodes on the line
> > > segments rather than drawing parallel lines at the appropriate
> > > distance from the centerline."
> > > 
> > > I don't think that is right, if the input feature is a line.
> > 
> > I guess statement 1) is somewhat right. See the attached screendump.
> > Red is the input lines, black is the output of the command:
> > 
> > v.buffer input=x_extr output=buffer type=boundary layer=1 buffer=100
> > scale=1.0 tolerance=0.01 debug=buffer
> 
> 
> I don't see the problem? Sure as part of the processing it buffers
> about nodes, but after a disolve common boundaries cleaning step the
> buffer looks correct between nodes as well? (see ski jump mid-right
> side of your image)

Why does it buffer around nodes anyway while we want it to buffer
around lines (only)?

Maciek

--------------------
W polskim Internecie s? setki milion?w stron. My przekazujemy Tobie tylko najlepsze z nich!
http://katalog.panoramainternetu.pl/




More information about the grass-user mailing list