[GRASS-user] Possible to patch vector layers with differing number of columns

[Moritz Lennert]

On 18/05/12 01:34, Tanya Dyck wrote:
> Hello,
>
> I am trying to patch together 3 vector layers which have a different
> number of columns per att.table. I keep getting the error that they
> cannot be patched because of this. Is there a way around this? One table
> has 31 columns, another has 13 and the last has 3.

You have two choices:

1) modify the attribute tables before patching to make them identifical 
in structure

2) Don't patch with attribute tables (i.e. omit the -e flag of v.patch), 
possibly reconnecting to an attribute table afterwards.

Moritz