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<p>Hi José,</p>
<p>QGIS has the concept of a virtual field - see <a href="https://docs.qgis.org/3.4/en/docs/user_manual/working_with_vector/attribute_table.html#creating-a-virtual-field">https://docs.qgis.org/3.4/en/docs/user_manual/working_with_vector/attribute_table.html#creating-a-virtual-field</a> </p>
<p>Greetings,</p>
<p>Andreas</p>
<p id="reply-intro">On 2019-06-12 11:06, Jose C. Rodríguez Durán wrote:</p>
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<div dir="ltr">Hi everybody,<br /><br />I'm trying to generate an automatic field, I mean, a field that depends for two others. We have FIELD1, FIELD2 and SUM. The result should be SUM = FIELD1 + FIELD2. The thing is, if I change the value of FIELD1, the value of SUM should change. Example: FIELD1 (8) + FIELD2 (10) = SUM (18) -----> FIELD1 (4) + FIELD2 (10) = SUM (14) <br /><br /><br />Any idea??<br /><br />Thanks in advance for your help!! <br clear="all" />
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<div dir="ltr"><strong>José C. Rodríguez Durán<br /></strong></div>
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