[GRASS-user] why v.patch -e produces cat column starting from 2?

Eric Patton epatton at nrcan.gc.ca
Thu Nov 13 11:40:46 EST 2008



Moritz Lennert-2 wrote:
> 
>> ## What is the option "id" doing exactly?
> 
> It identifies features not by the category numbers, but by their 
> internal id's. All features have id's, not all features have categories, 
> but if you do, you can find out the id's of certain features with the 
> help of v.edit tool=select, but normally, you won't ever have to worry 
> about id's.
> 

I've added notes about the id parameter, as well as a hint about using the
v.edit tool=select to discover geometry feature ids to the v.category
manpage. r34275 for 7.0, and r34276 for 6.4.

~ Eric.

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