[Qgis-user] Setting a line's length attribute

[Matej]

Hello,

I have a PostGIS table which has an attribute "length". I would like to have calculated length of every particular segment (the information that is printed when I click on the Identify Features and then select some line segment) to be somehow "set" into the field length automatically. In MapInfo, this can be achieved by Update column and then setting the ObjectLen to the appropriate field.

How can this be done in QGIS?

Thanks a lot!

Matej
matej at matnet.net
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