[GRASS-user] v.clean and database cleaning

GRASS GRASS user
1

Recently I ran v.clean tool=rmarea on a v.overlay result and surprised discovered that despite the command did get rid of small areas the corresponding database table was not updated accordingly. E.g. from 136 areas resulting from v.overlay after v.clean only 120 remained. The new table, however still had 136 rows.

Since the purpose is to use the cleaned table in further, non-spatial analysis I am asking if there is a way to clean the table of all redundant rows not corresponding to any area.

Thanks for your help
Miha

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2

Miha Staut pisze:

Recently I ran v.clean tool=rmarea on a v.overlay result and surprised discovered that despite the command did get rid of small areas the corresponding database table was not updated accordingly. E.g. from 136 areas resulting from v.overlay after v.clean only 120 remained. The new table, however still had 136 rows.

Since the purpose is to use the cleaned table in further, non-spatial
analysis I am asking if there is a way to clean the table of all redundant rows not corresponding to any area.

v.extract will pick only vector features which have a (specified)
category and their corresponding table entries.

Maciek

--
Maciej Sieczka
www.sieczka.org