I want to apply unique symbol to each feature. i have used following code for doing that
from qgis.core import *from PyQt4.QtGui import *# supply path to where is your qgis installedQgsApplication.setPrefixPath("/path/to/qgis/installation", True)# load providersQgsApplication.initQgis()# Get the active layer (must be a vector layer)layer = qgis.utils.iface.activeLayer();iter = layer.getFeatures();for feature in iter: geom = feature.geometry() print "Feature ID %d: " % feature.id() qgis.utils.iface.mapCanvas().setSelectionColor( QColor("yellow") ); layer.setSelectedFeatures([feature.id()]) qgis.utils.iface.mapCanvas().zoomToSelected( layer ) qgis.utils.iface.mapCanvas().refresh() selected_features = layer.selectedFeatures() for i in selected_features: attr =i.attributes() chaltano= str(attr[layer.fieldNameIndex('test')]) renderer = QgsCategorizedSymbolRendererV2("test") layer.setRendererV2(renderer) symbol = QgsSymbolV2.defaultSymbol(layer.geometryType()) symbol.setColor(QColor("red")) cat = QgsRendererCategoryV2(feature.id(), symbol,str(feature.id())) renderer.addCategory(cat)Symbol is applying to only last feature.Here, "test" is attribute.
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from qgis.core import *from PyQt4.QtGui import *# supply path to where is your qgis installedQgsApplication.setPrefixPath("/path/to/qgis/installation", True)# load providersQgsApplication.initQgis()# Get the active layer (must be a vector layer)layer = qgis.utils.iface.activeLayer();iter = layer.getFeatures();for feature in iter: geom = feature.geometry() print "Feature ID %d: " % feature.id() qgis.utils.iface.mapCanvas().setSelectionColor( QColor("yellow") ); layer.setSelectedFeatures([feature.id()]) qgis.utils.iface.mapCanvas().zoomToSelected( layer ) qgis.utils.iface.mapCanvas().refresh() selected_features = layer.selectedFeatures() for i in selected_features: attr =i.attributes() chaltano= str(attr[layer.fieldNameIndex('test')]) renderer = QgsCategorizedSymbolRendererV2("test") layer.setRendererV2(renderer) symbol = QgsSymbolV2.defaultSymbol(layer.geometryType()) symbol.setColor(QColor("red")) cat = QgsRendererCategoryV2(feature.id(), symbol,str(feature.id())) renderer.addCategory(cat)Symbol is applying to only last feature.Here, "test" is attribute.
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