Hi, I have a points vector file with the columns X and Y which are populated with the respective coordinates. Additionally I have a .csv file for the same points, also with the X and Y column and a lot more columns providing additional information. These two files don't share a single unique key which can be used for joining.
Thus I'd like to use the X-Y pair as a key for importing and then joining the csv table to the vector. Is there any possibility to use two columns as a combined key instead of one (probably an SQL statement for db.execute)? Or do I need to first create a new column and combine x and y into a key for the vector and the csv? Any suggestions how that can be done in GRASS (6.5, sqlite) in a simple way? Best regards, Johannes _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
