WARNING: No attribute found for cat 123:
select cat from hey4 where cat = 123
WARNING: No attribute found for cat 124:
select cat from hey4 where cat = 124
(and the others)
how can I eliminate the vectors that does not have any attribute ?
when I try to delete that records in postgresql, I think grass keeps
vectors internally ?
regards
--
Ahmet Temiz
--
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how can I eliminate the vectors that does not have any attribute ?
when I try to delete that records in postgresql, I think grass keeps
vectors internally ?
No attribute table in a vector means no need for a db connection, (is it our case?) but if you got ‘null’ atts for some cats I think you should not delete those records at all.
Null values in a db table won’t do you no harm and you will spent only few bytes for the primary key storage
of course you won’t see the warnings
how can I eliminate the vectors that does not have any attribute ?
when I try to delete that records in postgresql, I think grass keeps
vectors internally ?
v.extract only copies features with a cat.
I think it is an error for the cat column to be NULL in the attribute table.
v.extract or d.vect with a SQL where= query should help.
