Salvatore Oliveto wrote > Hi, I have a Qgis layer with a table with twno columns X and Y. > The X column has a set of values, while in the Y column I have to enter, > using field calculator, for each record the progressive value. Eg : X > column values: a , b , c , d ; Y column values (to be calculated with the > field calculator from Y column): a; a + b; a + b + c; a + b + c + d.
Hi Salvatore, not really sure, if I understood you properly, but you can use a "case when ... then ... else" condition in field calculator. Please adapt the following pattern to your needs: CASE WHEN X = a THEN a WHEN X = b THEN a+b WHEN X = c THEN a+b+c WHEN X = d THEN a+b+c+d ELSE 'error value' END Hope this helps, regards, Christine -- View this message in context: http://osgeo-org.1560.x6.nabble.com/calculating-progressive-value-tp5280693p5280699.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. _______________________________________________ Qgis-user mailing list [email protected] List info: http://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
