Re: [GRASS-user] snap point to line/break line at given points

2011-04-26 Thread Moritz Lennert
On 25/04/11 18:37, Johannes Radinger wrote: Am 25.04.2011 um 15:51 schrieb Moritz Lennert: On 25/04/11 12:04, Micha Silver wrote: On 04/24/2011 03:36 PM, Johannes Radinger wrote: Hi Micha, Hi other GRASS users! Am 23.04.2011 um 18:01 schrieb Micha Silver: So if I understand you correctly

Re: [GRASS-user] snap point to line/break line at given points

2011-04-25 Thread Johannes Radinger
Am 25.04.2011 um 15:51 schrieb Moritz Lennert: On 25/04/11 12:04, Micha Silver wrote: On 04/24/2011 03:36 PM, Johannes Radinger wrote: Hi Micha, Hi other GRASS users! Am 23.04.2011 um 18:01 schrieb Micha Silver: So if I understand you correctly, it is not really possible to split a

Re: [GRASS-user] snap point to line/break line at given points

2011-04-25 Thread Johannes Radinger
Am 25.04.2011 um 15:51 schrieb Moritz Lennert: On 25/04/11 12:04, Micha Silver wrote: On 04/24/2011 03:36 PM, Johannes Radinger wrote: Hi Micha, Hi other GRASS users! Am 23.04.2011 um 18:01 schrieb Micha Silver: So if I understand you correctly, it is not really possible to split a r

Re: [GRASS-user] snap point to line/break line at given points

2011-04-25 Thread Moritz Lennert
On 25/04/11 12:04, Micha Silver wrote: On 04/24/2011 03:36 PM, Johannes Radinger wrote: Hi Micha, Hi other GRASS users! Am 23.04.2011 um 18:01 schrieb Micha Silver: So if I understand you correctly, it is not really possible to split a river network at one point into to parts. I attached a

Re: [GRASS-user] snap point to line/break line at given points

2011-04-25 Thread Micha Silver
On 04/24/2011 03:36 PM, Johannes Radinger wrote: Hi Micha, Hi other GRASS users! Am 23.04.2011 um 18:01 schrieb Micha Silver: So if I understand you correctly, it is not really

Re: [GRASS-user] snap point to line/break line at given points

2011-04-24 Thread Johannes Radinger
Hi Micha,Hi other GRASS users!Am 23.04.2011 um 18:01 schrieb Micha Silver: Hi Johannes: On 04/22/2011 05:15 PM, Johannes Radinger wrote: Am 22.04.2011 um 13:22 schrieb Moritz Lennert: On 22/04/11 11:34, Johannes Radinger wrote: About my

Re: [GRASS-user] snap point to line/break line at given points

2011-04-23 Thread Micha Silver
Hi Johannes: On 04/22/2011 05:15 PM, Johannes Radinger wrote: Am 22.04.2011 um 13:22 schrieb Moritz Lennert: On 22/04/11 11:34, Johannes Radinger wrote: About my situation: I've got a river network, which is a polylinefeature set

Re: [GRASS-user] snap point to line/break line at given points

2011-04-22 Thread Moritz Lennert
On 22/04/11 11:34, Johannes Radinger wrote: About my situation: I've got a river network, which is a polylinefeature set with 43 lines (43 IDs) included (tree-like shape of a rivernet) all with the same cat-value (1). Now I would like to unite/merge the lines to one feature (1 ID) if that is p

Re: [GRASS-user] snap point to line/break line at given points

2011-04-22 Thread Johannes Radinger
Am 18.04.2011 um 13:40 schrieb Micha Silver: > On 04/18/2011 01:55 PM, Micha Silver wrote: >> >> >> Maybe a few more details might be helpful: >> If you want to first get the coordinates of the new points along the >> (simplified) river line, >> (starting with a line vector 'river' and a set o

Re: [GRASS-user] snap point to line/break line at given points

2011-04-18 Thread Moritz Lennert
On 18/04/11 12:55, Micha Silver wrote: On 04/18/2011 12:55 PM, Moritz Lennert wrote: v.distance should be able to do the labelling for you. I tried this part, but couldn't get it to work :-( . I used v.what.vect (and v.distance directly) to get the cat values from the new points into the ri

Re: [GRASS-user] snap point to line/break line at given points

2011-04-18 Thread Micha Silver
On 04/18/2011 01:55 PM, Micha Silver wrote: Maybe a few more details might be helpful: If you want to first get the coordinates of the new points along the (simplified) river line, (starting with a line vector 'river' and a set of points 'old_pts' displaced from the line) you first do: ~>v.

Re: [GRASS-user] snap point to line/break line at given points

2011-04-18 Thread Micha Silver
On 04/18/2011 12:55 PM, Moritz Lennert wrote: On 18/04/11 08:19, Johannes Radinger wrote: Am 16.04.2011 um 17:25 schrieb Daniel Victoria: Not sure how to split and label the rivers but to snap the point to the closest river you could use v.distance I also thought about v.distance. There I

Re: [GRASS-user] snap point to line/break line at given points

2011-04-18 Thread Moritz Lennert
On 18/04/11 08:19, Johannes Radinger wrote: Am 16.04.2011 um 17:25 schrieb Daniel Victoria: Not sure how to split and label the rivers but to snap the point to the closest river you could use v.distance I also thought about v.distance. There I get the coordinates of the closest points on the

Re: [GRASS-user] snap point to line/break line at given points

2011-04-17 Thread Johannes Radinger
Am 16.04.2011 um 17:25 schrieb Daniel Victoria: Not sure how to split and label the rivers but to snap the point to the closest river you could use v.distance I also thought about v.distance. There I get the coordinates of the closest points on the new line (stdout). I just have to create a n

Re: [GRASS-user] snap point to line/break line at given points

2011-04-16 Thread Daniel Victoria
Not sure how to split and label the rivers but to snap the point to the closest river you could use v.distance Cheers daniel http://grass.fbk.eu/grass65/manuals/html65_user/v.distance.html On Thu, Apr 14, 2011 at 6:36 AM, Johannes Radinger wrote: > Hello, > > I have a line-vector (river) and so

[GRASS-user] snap point to line/break line at given points

2011-04-14 Thread Johannes Radinger
Hello, I have a line-vector (river) and some points on that line. First I am straightening that line with v.generalize (method: boyle). Now, there is the problem that the points are not exactly on the line anymore. So I want to snap (move) the points to the new generalized line again. Which too