[Qgis-developer] Select By Attribute

[Michael McInnis]

Desperately need help doing attribute based selection :

How do I select all features in a LAYER that the Field LWFLAG != 'P'
Python Console

from osgeo import ogr

canvas = qgis.utils.iface.mapCanvas()

allLayers = canvas.layers()

for i in allLayers: i.selectAll(); print i.name(); print
i.selectedFeatureCount()

 

for i in allLayers: i.selectAll(); print i.name(); print
i.selectedFeatureCount()

i.getFeatures(QgsFeatureRequest().setFilterExpression(‘
“LWFLAGS” != \’P\’) )

 

exp =
QgsExpression(‘LWFLAG <> “P” ’) 


 		 	   		  
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