[GRASS-user] merging 2 line segments in a vector

[Stephan Holl]

Hello Michael,

On Thu,  8 Jun 2006 17:41:59 +0200 Michael Fecht
<Michael.Fecht at uibk.ac.at> wrote:

> Zitat von Hamish <hamish_nospam at yahoo.com>:
> 
> > > i digitized a line layer in grass6.1cvs(from last week). Now I
> > > want to merge 3 linesegments in the layer to be one segment. Is
> > > there a methode/tool to do this topological task (I could not
> > > find any in v.clean)?
> >
> >
> > try v.build.polylines
> >
> Thanks, the geometry/topology was modified as expected. But there is
> a problem with the attributes.
> 
> The input map has a table with attributes but v.build.polylines does
> not write a table for the output map as described in the manual. Any
> ideas?

AFAIK the table does not get altered, because the program does not
know which attribute will be assigned to the new vector.

But I may be wrong.

Best
	Stephan


-- 
GDF Hannover - Solutions for spatial data analysis and remote sensing
Hannover Office      -     Mengendamm 16d      -     D-30177 Hannover
Internet: www.gdf-hannover.de      -      Email: holl at gdf-hannover.de
Phone : ++49-(0)511.39088507       -        Fax: ++49-(0)511.39088508