[GRASSLIST:9746] Re: Add 3D Values

[Dylan Beaudette]

Great.

There are a couple ways of doing this.

one such method:
1. create points along your line segment with v.to.points [1]
2. copy elevation attribute from line to points
3. dump points and attributes as text
4. process with your favorite graphing app

[1] see manual for the details on this command- note that it will create an 
attribute 'along' which is a measure of the distance along the line you are 
interested in.

cheers,

Dylan

On Thursday 05 January 2006 07:02 am, David Bitner wrote:
> Perfect.
>
> Now is there a way that I can create a distance along the line to
> elevation at that distance profile?  Even just a table of distance to
> elevation that could be plotted in a graphing package.
>
> Thanks,
> David
>
> On 1/4/06, Dylan Beaudette <dylan.beaudette at gmail.com> wrote:
> > On Wednesday 04 January 2006 02:01 pm, David Bitner wrote:
> > > Oops, I forgot to change the subject while replying...
> > >
> > > > Is there a way to extract elevations (either from contours or a dem)
> > > > into a 2D line to add a 3rd dimension to the line?  Also, is it
> > > > possible to create a distance, elevation profile along this line?
> > > >
> > > > Right now I have a 2D shapefile of a race course and a DEM (or
> > > > contours) of the same area.  I would like to create a plot of
> > > > distance to elevation across the course.
> > > >
> > > > I am jumping into Grass for the first time, so help at the most basic
> > > > level would be great.
> > > >
> > > > Thanks,
> > > > David
> >
> > try v.drape in the CVS branch.
> >
> > cheers!
> >
> > --
> > Dylan Beaudette
> > Soils and Biogeochemistry Graduate Group
> > University of California at Davis
> > 530.754.7341

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341