Details Ticket 4026


Comment | Reply | Take | Resolve


Serial Number 4026
Subject v.to.points: add a switch to avoid duplicate points when converting a closed line
Area wish6
Queue grass
Requestors tutey@o2.pl
Owner none
Status open
Last User Contact Fri Jan 27 16:18:51 2006 (3 yr ago)
Current Priority 30
Final Priority 70
Due No date assigned
Last Action Wed Jul 26 18:15:04 2006 (2 yr ago)
Created Fri Jan 20 15:59:23 2006 (3 yr ago)

Transaction History Ticket 4026


Fri, Jan 20 2006 15:59:23    Request created by guest  
Subject: v.to.points: a pair of identicaly located points in output when the
input is a closed line

Platform: GNU/Linux/x86
grass obtained from: Trento Italy site
grass binary for platform: Compiled from Sources
GRASS Version: cvs 2005.01.10

When v.to.points is run on a closed line, there will be one pair of identicaly
located  points - one will be the "starting" point with cat=1 and along=0.0,
and the other will be the "ending" point of a line (which is exactly the same
as the "starting" since this a closed line) with the maximum "cat" and "along"
attribute of all.

It took me quite some time to sort it out. It's not documented. Looks dumb obvious
now to me, as there is the "along" calculated by default. But could there be
at least a switch to turn this behaviour off? When transforming my isolines to
points I need only one point per one x,y with the attribute copied form the input
line. And I guess this is the default behaviour users would normally expect from
v.to.points.

Maciek
Fri, Jan 27 2006 16:18:51    Mail sent by msieczka  
Of course this can be workedaround by v.clean to remove duplicate points. Yet
a switch to avoid producing duplicate points at all would be handy.

Reassigning to wish6.

Maciek
Fri, Jan 27 2006 16:18:59    Area changed to wish6 by msieczka  
Fri, Jan 27 2006 16:19:53    Subject changed to v.to.points: add a switch to avoid duplicate points when converting a closed line by msieczka  
Wed, Jul 26 2006 18:15:04    User changed to tutey@o2.pl by msieczka  
Comment | Reply | Take | Resolve

You are currently authenticated as guest.
[Show Configuration] [Login as another user]

Users Guide - Mail Commands - Homepage of RequestTracker 1.0.7 - list any request