[Qgis-user] Correct the attribute table automatically

[Bernd Vogelgesang]

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 <p.kania at op.pl>:

> 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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-- 
Bernd Vogelgesang
Siedlerstraße 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374
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