Ahhh,
now I finally got what those virtual fields are good for! Great!
The non-noob way of achieving this so far was e.g. to use a SpatiaLite db
and create triggers there. See http://gis.stackexchange.com/a/86470
This would then be a permanent solution.
Cheers
Bernd
Am 10.02.2016, 10:53 Uhr, schrieb Piotr Kania <[email protected]>:
Here it's nice info:
http://www.northrivergeographic.com/archives/qgis-2-6-virtual-fields
W dniu 2016-02-10 o 10:18, Josefine Petrenz pisze:
hej hej,
at first, I would like to apologize for my english.
I have a shape-file with several areas. In my attribut table, each area
has an information about the area size.
Step by step the areas become bigger or smaller. Every time, when this
happened, i have to recalculate the area size. is >>there a way, that
the area size correct automatically in the attribute table, when i
change the area?
thanks in advance
josi
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