Hi, I am looking for help with loading tiger data into grass4.1
I am able to get a vector plot of all data, but unable to build
category files for the line and point data. It appears that the
only routine (v.in.tig.lndmk) available makes a category file for
the area features but not point or line. I would like to be able
to build a map that contains road, stream information as well
as census block ID's. I would appreciate any help or pointers that
would enable me to do this.
thanks in advance, Nathan ,Va Tech Agricultural Engineering
v.in.tig.basic (GRASS4.1) or v.in.tiger12 (GRASS4.0) will create vector maps
with TIGER/Line line features, i.e. roads, streams, etc. However, the TIGER/
Line ID numbers (TLID) are used for attributes, and there are no categories
(as each attribute is unique!). I do not know how to build census blocks as
attributed areas in GRASS; however, ArcInfo does this quite well, so if you
have any buddies with Arc...
I will be writing some shell scripts to allow categories to be used with the
vector layers created by v.in.tig.basic (line features only!). I'll post more
info when these are completed.
--
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