On 08/07/11 15:57, Rainer M Krug wrote:
On Fri, Jul 8, 2011 at 1:16 PM, Micha Silver <[email protected] <mailto:[email protected]>> wrote: __ On Fri, 2011-07-08 at 11:19 +0200, Rainer M Krug wrote:Hi I would like to export a 3D line feature into a csv format, as in: x y z 1 2 3 . . . I am not interested in the attribute tab;e, as I need the coordinates incl z.Hi Micha, v.db.addcol <vectormap> col="x double precision, y double precision z double predision" Then put the values into those columns v.to.db <vectormap> option=coor column="x,y,z" Now export the attrib table as you did before. This does unfortunately not work, as I have a line feature and not a point feature - and I would like to extract the co-ordinates of all vertexes of each line. I need this data, as I have to do some analysis afterwards for which I need the z-co-ordinate of each vertex. I could convert the lines to points, but how do I know which ones belong to which line and in which order?
v.to.db option=start / option=end will give you the beginning and end coordinates of line beginnings and ends. AFAIK, this will not include each vertex of a line, only nodes.
Or you can use v.build option=dump, although the result will need some treatment to be usable.
Moritz _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
