[GRASS-user] lines and interpolations

[Moritz Lennert]

On 03/06/12 13:28, ambrish dhaka wrote:
> Hi! all,
> just a random exercise!
>
> if I have a set of lines then can they be connected through their
> endpoints to the nearest end-point of nearest line, thus creating a
> single line.

brainstorming (in addition to Micha's response):

- v.to.db option=start,end to get the coordinates of line ends
- v.in.db to create point maps with line ends
- v.distance with output= to create lines between closest line ends

You would have to find a way to exclude original couples of start+end in 
v.distance run.

>
> or
>
> Can we have a line generated through the centroids of the polygons in a
> single command.

Again brainstorming in addition to Micha's ideas:

If you mean one line that goes through all centroids, I don't think that 
you can do this in a single command, but you could try a combination of 
v.net.visibility + v.net.salesman...

Moritz