[GRASSLIST:2888] Re: v.what.rast bug?

Radim Blazek blazek at itc.it
Wed Mar 10 04:57:12 EST 2004

On Tuesday 09 March 2004 16:11, Christopher Fonnesbeck wrote:
> On Mar 9, 2004, at 3:13 AM, Radim Blazek wrote:
> >> I have tried running v.segment directly on my stream network, and I
> >> get
> >> the same behaviour; that is, the process hangs without using any CPU.
> >> If I press enter, I get the incorrect segment type warning repeatedly.
> >> I eventually have to kill the process.
> >>
> >> What I am trying to do now is determine the downstream polyline of
> >> each
> >> polyline in a stream network. I assume I need to run v.segment first,
> >> then do some programming?
> >
> > What is your input you send to stdin of v.segment?
> To stdin? I thought the input was specified by the "input=" option. Do
> you mean that input needs to be piped to v.segment?
> Thanks,
> C.

 Create points/segments from input lines, and positions read from stdin in format:
P <point id> <line cat> <offset> [<side offset>]
L <segment id> <line cat> <start offset> <end offset> [<side offset>]
Segment is created for the first found line of that category only.


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