On 16 February 2018 at 04:36, kimaidou <kimai...@gmail.com> wrote: > Hi all, > > I have a simple processing python alg which > * generates a buffer with qgis:buffer > * use qgis:fieldcalculator to add an buf_area field -> the output vector of > my alg is this buffer+new field. > > I would like to parse the features of the output vector in order to gather > some information and put it in a new string output. I have not been able to > get the layer object to perform a getFeatures on it. > > See the code > http://paste.debian.net/1010463/ > > In line 32, my blayer is None > I think I am not using the good way to get the output vector layer features? > I tried to use the same way as for reading an input layer, but oviously it > is different.
blayer = QgsProcessingUtils.mapLayerFromString( area_result[ 'OUTPUT' ]), context ) I'm thinking of adding a shortcut for this to the context, e.g.: blayer = context.getMapLayer( area_result['OUTPUT'] ) What do you think? Nyall _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
