[GRASSLIST:3927] merging vector attributes from an external .dbf file
Jed O. Kaplan
jed.kaplan at jrc.it
Thu Jul 15 13:44:45 EDT 2004
Hello Grass users,
I am struggling to import a .e00 vector map into GRASS and retain
attributes contained in a separate .dbf file that serves as a lookup
table. Here are the details.
I started with an Arc .e00 export file that contains one vector
coverage. In addition I received a separate, complementary .dbf file
that contains several descriptive fields related to the polygons in the
.e00 file.
Here's what I've done so far:
1. Import the .e00 file into GRASS 5.3 (using m.in.e00).
2. Switch to GRASS 5.7
3. Convert the v5.3 vector to a v5.7 vector
I now have both a GRASS vector file and a .dbf file (that was
automatically generated during the import). This .dbf file contains
two columns: "cat" and "label".
I have a second .dbf file (the one that came with the dataset). This
.dbf file has several columns, including a "label" field that matches
up with the "label", but this file has no "cat" column (i.e. it is a
lookup table based on the field "label").
Now is where I get stuck. How can I link all of the information that is
in this second, external table with the table that was generated by
m.in.e00?
I hope I have been clear enough. I am fairly new to GRASS and any
advice you may have would be much appreciated.
Thank you,
Jed Kaplan
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