Hello list,
i am using GRASS 6.4svn to merge adjacent poylgons into larger units. The
merging is controlled by a column of type CHAR:
v.dissolve input=counties output=counties_merged_fips1 column=FIPS_1
results in
dbmi: Protocol error
ERROR: Cannot open select cursor: SELECT cat, FIPS_1 FROM counties
ORDER BY FIPS_1
ERROR: Unable to open vector map <[EMAIL PROTECTED]>
on topology level 2
WARNING: Table <counties_fips1_22157> linked to vector map
<counties_fips1_22157> does not exist
ERROR: Vector map <counties_fips1> not found in the current mapset
v.dissolve works correctly when applied to an INT column.
I assume this is a bugfeature - string-based dissolving would be great to have
at some point.
For now, does anybody have a (DBdriver-)SQL-hack to transmogrify strings like
"GRASS001", "GRASS002", "GRASS003" into the Integers 1,2,3 ? (aka getting rid
of the "GRASS"-part of the string) ?
Cheers,
Peter
--
Dr. Peter Löwe
<[EMAIL PROTECTED]>
GMX startet ShortView.de. Hier findest Du Leute mit Deinen Interessen!
Jetzt dabei sein: http://www.shortview.de/[EMAIL PROTECTED]
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