We have vector files representing tributaries to a river.
Is there a command in GRASS4.0 or
4.1 that will give me the vector length of either 1) each category
in a file or 2) the whole vector file?Background: The vector files are dlg stream data which are imported into
GRASS4.0. We can use v.digit to either categorize all the tributaries in
each file by
stream order (in which case we'd like to use choice #1, above)
OR we can create files containing only the first order tributaries,
then create a file containing only the 2d order tributaries, etc (in which
case we'd like to use choice #2, above).Thanks in advance for all help!
-Nancy
There is a wonderful program called v.report, found under src.contrib/SCS/vector
in GRASS4.1. It reports on length of vectors, areas of polygons, and number of
sites in GRASS vector layers. Good stuff (reason enough to get 4.1!!) (along
with v.reclass!).
--
Malcolm D. Williamson - Research Assistant E-mail: malcolm@cast.uark.edu
Center for Advanced Spatial Technologies Telephone: (501) 575-6159
Ozark Rm. 12 Fax: (501) 575-3846
University of Arkansas
Fayetteville, AR 72701