[GIS] Getting features attributes on feature selection in QGIS python

pyqgisqgis-2qgis-plugins

I want to know how to get features from a layer on click event.. using python(m trying to create a plugin).. the below code always show 0 output

layer = iface.activeLayer()
selection = layer.selectedFeatures()
print len(selection)
for feature in selection:
    print feature['NAME']

Best Answer

This works fine for me

layer = iface.activeLayer()

h = layer.selectedFeatures()

for f in h: print f['ID']

Related Solutions

[GIS] Global name canvas is not defined

You are calling the wrong class. What you need to call is mapCanvas, and not canvas.

Change your code to this:

allLayers = iface.mapCanvas().layers()
for i in allLayers:
    print i.name()

This will print all of your current layers' names.

Also note that you need to indent the print line. I assume in your post this was just a copy/paste problem, but if not, go ahead and change it, or it will not work :-)

QGIS – Resolving ‘Global Name Layer is Not Defined’ NameError

Problem has been solved. I've changed the code a little bit. here is the final code.

def btn_nuf_pressed(self):

    layer = geo_utils.LayerUtils.get_lay_from_id(self.cbo_layer.itemData(self.cbo_layer.currentIndex()))
    selection = layer.selectedFeatures()
    layer.startEditing()
    for feature in selection:
        layer.changeAttributeValue(feature.id(), 5, '')

    #self.ft_pos += 1
    self.next_ft(1)

    self.lbl_ftCount.setText("%d of %d features" % ((self.ft_pos + 1), len(self.feats_od)))

    if self.ft_pos >= len(self.feats_od) - 1:
        self.btn_next.setEnabled(False)

    if len(self.feats_od) > 1 and self.ft_pos > 0:
        self.btn_prev.setEnabled(True)
        self.btn_nuf.setEnabled(True)

Best Answer

Related Solutions

[GIS] Global name canvas is not defined

QGIS – Resolving ‘Global Name Layer is Not Defined’ NameError

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