length of roads in an area

[Rick Thompson]

Hi, Eric.
  I have a script called r.length that takes into account vertical/horizontal
cells versus diagonal cells and their lengths and calculates their distances.
Accuracy is dependent on cell resolution- the lower the better. Let me know if
you're interested in it. Rick

> I am wondering if there is any method to determine the length of a number of 
> road segments (total length) within a given area (vector length within raster
> area). I can do a v.to.rast on the roads and run r.report, but this is not 
> ideal. Any ideas? 

------------------------------------------------------------------------
Rick Thompson-   Research Assistant           E-mail: rick at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-5736
Ozark Hall Rm. 12                             Fax: 575-3846 
University of Arkansas              
Fayetteville, AR 72701