For a shapefile, I have a field named id with the following contents in it:
1 1 2 2
I want to make these values unique such as:
1 2 3 4
Is there any way to achieve this in Quantum GIS (using any plugin or other means) ?
You can use the Field Calculator in the Attribute table to assign the features unique values by checking "Update existing field", selecting the appropriate field, and entering