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0

Am working with Landusefc and class columns(ref table).
What I want is :Select all water from class and give a value say "8" in the landusefc column for these selected features

table1

I have tried the following code, but doesnt seem to work.

from qgis.core import *

import processing

layer=processing.getObject('test1')

query= ' "class" = 'Water' '

selection = layer.getFeatures(QgsFeatureRequest().setFilterExpression(query))

layer.setSelectedFeatures([k.id() for k in selection])



#using change Attribute to change the value of the selected feature



layer.startEditing()

for feat in selection:

 layer.changeAttributeValue(feat.id(), 5, 8)



layer.commitChanges()

qgis pyqgis

share

asked 4 mins ago

ShellyShelly

6

add a comment | 

0

Am working with Landusefc and class columns(ref table).
What I want is :Select all water from class and give a value say "8" in the landusefc column for these selected features

table1

I have tried the following code, but doesnt seem to work.

from qgis.core import *

import processing

layer=processing.getObject('test1')

query= ' "class" = 'Water' '

selection = layer.getFeatures(QgsFeatureRequest().setFilterExpression(query))

layer.setSelectedFeatures([k.id() for k in selection])



#using change Attribute to change the value of the selected feature



layer.startEditing()

for feat in selection:

 layer.changeAttributeValue(feat.id(), 5, 8)



layer.commitChanges()

qgis pyqgis

share

asked 4 mins ago

ShellyShelly

6

add a comment | 

Am working with Landusefc and class columns(ref table).
What I want is :Select all water from class and give a value say "8" in the landusefc column for these selected features

table1

I have tried the following code, but doesnt seem to work.

from qgis.core import *

import processing

layer=processing.getObject('test1')

query= ' "class" = 'Water' '

selection = layer.getFeatures(QgsFeatureRequest().setFilterExpression(query))

layer.setSelectedFeatures([k.id() for k in selection])



#using change Attribute to change the value of the selected feature



layer.startEditing()

for feat in selection:

 layer.changeAttributeValue(feat.id(), 5, 8)



layer.commitChanges()

qgis pyqgis

share

asked 4 mins ago

ShellyShelly

6

from qgis.core import *

import processing

layer=processing.getObject('test1')

query= ' "class" = 'Water' '

selection = layer.getFeatures(QgsFeatureRequest().setFilterExpression(query))

layer.setSelectedFeatures([k.id() for k in selection])



#using change Attribute to change the value of the selected feature



layer.startEditing()

for feat in selection:

 layer.changeAttributeValue(feat.id(), 5, 8)



layer.commitChanges()

share

asked 4 mins ago

ShellyShelly

6

share

asked 4 mins ago

ShellyShelly

6

asked 4 mins ago

ShellyShelly

6

asked 4 mins ago

ShellyShelly

6