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how to fill values in a field of a layer if the id columns of two layers match using pyqgis 3?

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0

I have two layers, pipes and intersect layers. Both layers have an id,score column but intersect layer does not have all the ids present in pipes. So i am trying to check if the id present in pipes exists in intersect, if yes then copy intersect's score to pipe's score else leave it blank and continue. But the code neither gives an error nor does it make the changes in the attribute table of the pipe layer.
The code is as follows:

pipe_feat = selectedLayer.getFeatures() #pipes layer

field4 = selectedLayer.fields().indexFromName(fid1) #id column is referenced

selectedLayer.startEditing()

featLayer = layer.getFeatures() #intersect layer

field3 = layer.fields().indexFromName('PIPEID')

for feat in pipe_feat:

    for f in featLayer:

        if feat[field4]==f[field3]:

             feat['SewerScore'] = f['Score'] 

             selectedLayer.updateFeature(feat)

        else:

             continue

selectedLayer.commitChanges()

I have also tried this method: But even this does not work.

  id_score={}

  for f in featLayer:

      id_score[f[field3]] = f['Score']



  for feat in pipe_feat:    

      for key,value in id_score.items():

          if key == feat[field4] :

              feat['SewerScore'] = id_score.get[key]

              layer.updateFeature(f)

              selectedLayer.updateFeature(feat)

          else:

              continue

python qgis-3 pyqgis-3

share

asked 6 mins ago

raorao

578

add a comment | 

0

I have two layers, pipes and intersect layers. Both layers have an id,score column but intersect layer does not have all the ids present in pipes. So i am trying to check if the id present in pipes exists in intersect, if yes then copy intersect's score to pipe's score else leave it blank and continue. But the code neither gives an error nor does it make the changes in the attribute table of the pipe layer.
The code is as follows:

pipe_feat = selectedLayer.getFeatures() #pipes layer

field4 = selectedLayer.fields().indexFromName(fid1) #id column is referenced

selectedLayer.startEditing()

featLayer = layer.getFeatures() #intersect layer

field3 = layer.fields().indexFromName('PIPEID')

for feat in pipe_feat:

    for f in featLayer:

        if feat[field4]==f[field3]:

             feat['SewerScore'] = f['Score'] 

             selectedLayer.updateFeature(feat)

        else:

             continue

selectedLayer.commitChanges()

I have also tried this method: But even this does not work.

  id_score={}

  for f in featLayer:

      id_score[f[field3]] = f['Score']



  for feat in pipe_feat:    

      for key,value in id_score.items():

          if key == feat[field4] :

              feat['SewerScore'] = id_score.get[key]

              layer.updateFeature(f)

              selectedLayer.updateFeature(feat)

          else:

              continue

python qgis-3 pyqgis-3

share

asked 6 mins ago

raorao

578

add a comment | 

I have two layers, pipes and intersect layers. Both layers have an id,score column but intersect layer does not have all the ids present in pipes. So i am trying to check if the id present in pipes exists in intersect, if yes then copy intersect's score to pipe's score else leave it blank and continue. But the code neither gives an error nor does it make the changes in the attribute table of the pipe layer.
The code is as follows:

pipe_feat = selectedLayer.getFeatures() #pipes layer

field4 = selectedLayer.fields().indexFromName(fid1) #id column is referenced

selectedLayer.startEditing()

featLayer = layer.getFeatures() #intersect layer

field3 = layer.fields().indexFromName('PIPEID')

for feat in pipe_feat:

    for f in featLayer:

        if feat[field4]==f[field3]:

             feat['SewerScore'] = f['Score'] 

             selectedLayer.updateFeature(feat)

        else:

             continue

selectedLayer.commitChanges()

I have also tried this method: But even this does not work.

  id_score={}

  for f in featLayer:

      id_score[f[field3]] = f['Score']



  for feat in pipe_feat:    

      for key,value in id_score.items():

          if key == feat[field4] :

              feat['SewerScore'] = id_score.get[key]

              layer.updateFeature(f)

              selectedLayer.updateFeature(feat)

          else:

              continue

python qgis-3 pyqgis-3

share

asked 6 mins ago

raorao

578

pipe_feat = selectedLayer.getFeatures() #pipes layer

field4 = selectedLayer.fields().indexFromName(fid1) #id column is referenced

selectedLayer.startEditing()

featLayer = layer.getFeatures() #intersect layer

field3 = layer.fields().indexFromName('PIPEID')

for feat in pipe_feat:

    for f in featLayer:

        if feat[field4]==f[field3]:

             feat['SewerScore'] = f['Score'] 

             selectedLayer.updateFeature(feat)

        else:

             continue

selectedLayer.commitChanges()

  id_score={}

  for f in featLayer:

      id_score[f[field3]] = f['Score']



  for feat in pipe_feat:    

      for key,value in id_score.items():

          if key == feat[field4] :

              feat['SewerScore'] = id_score.get[key]

              layer.updateFeature(f)

              selectedLayer.updateFeature(feat)

          else:

              continue

share

asked 6 mins ago

raorao

578

share

asked 6 mins ago

raorao

578

asked 6 mins ago

raorao

578

asked 6 mins ago

raorao

578