help w/ Tiger-Grass interface

Malcolm Williamson malcolm at
Thu Nov 11 17:06:15 EST 1993

> 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 ( 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
> (GRASS4.1) or (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 (line features only!). I'll post more
info when these are completed.

Malcolm D. Williamson - Research Assistant       E-mail: malcolm at
Center for Advanced Spatial Technologies      Telephone: (501) 575-6159
Ozark Rm. 12                                        Fax: (501) 575-3846 
University of Arkansas              
Fayetteville, AR 72701

More information about the grass-user mailing list