HI Micha,
To get the column length, you can use the export/add geometry
function in fTools, which will create a copy of the dataset (as a
shapefile) with an additional length field (or it will populated the
length field if it already exists). From this you can use the compute
basic statistics function to get the sum of the field...
Any chance to alter the fTools plugin so that the geometry functions
stick the new columns straight into the original shapefile?
I'd love to of course, but the ability to add fields to shapefiles was
only recently added to ogr (which is what QGIS uses to do all this
lovely stuff), and this is not yet a minimum version constraint on QGIS,
so not everyone would be able to take advantage of this functionality...
as soon as it's a requirement, I'll change the tool to reflect this.
Cheers,
Carson
--
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: [email protected]
Web: http://www.carsonfarmer.com/
http://www.ftools.ca/
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