[GRASSLIST:1518] Re: How to measure plants?

[Markus Neteler]

On Mon, Feb 26, 2001 at 06:45:57AM -0800, Rich Shepard wrote:
> On Mon, 26 Feb 2001, Slawomir K. Duda wrote:
> 
> > I try to measure plants (mosses, mainly Pleurozium schreberi) using GIS
> > software. I have scanned images of mosses and I want measure main lenght
> > and lenght of all branches with their position. I think this is similar
> > problem as with measure river lenght with lenghts and position of all
> > tributaries.
> > I'm new in GRASS and I've got lost in all commands. If anyone has idea how
> > to solve above problem I'll feel  very grateful for any information.
> 
> Slawomir,
> 
>   What you need is network analysis, and I do not know if GRASS has this
> capability. GRASS does most of its analyses using raster data, not vector
> data. Just this past weekend I thought of a number of applications where
> vector-based network analyses would be helpful to me. I was going to
> investigate whether or not GRASS has this capability now.
> 
>   Perhaps someone more knowledgeable will answer and we will both know.

To Roberto Micarelli:

 As you are working on GRASS vector network analysis, do you
 have any news for us? Probably you need assistance to implement
 your working tool into GRASS (I remember such a mail). Please
 let us know about the status,

 Markus Neteler