def clean_layer(layer):
"""Clean a vector layer.
:param layer: The vector layer.
:type layer: QgsVectorLayer
:return: The buffered vector layer.
:rtype: QgsVectorLayer
"""
output_layer_name = clean_geometry_steps['output_layer_name']
output_layer_name = output_layer_name % layer.keywords['layer_purpose']
# start editing
layer.startEditing()
count = 0
# iterate through all features
request = QgsFeatureRequest().setSubsetOfAttributes([])
for feature in layer.getFeatures(request):
geom = feature.geometry()
was_valid, geometry_cleaned = geometry_checker(geom)
if was_valid:
# Do nothing if it was valid
pass
elif not was_valid and geometry_cleaned:
# Update the geometry if it was not valid, and clean now
layer.changeGeometry(feature.id(), geometry_cleaned, True)
else:
# Delete if it was not valid and not able to be cleaned
count += 1
layer.deleteFeature(feature.id())
if count:
LOGGER.critical(
'%s features have been removed from %s because of invalid '
'geometries.' % (count, layer.name()))
else:
LOGGER.info('No feature has been removed from the layer: %s' %
layer.name())
# save changes
layer.commitChanges()
layer.keywords['title'] = output_layer_name
check_layer(layer)
return layer
def clean_layer(layer):
"""Clean a vector layer.
:param layer: The vector layer.
:type layer: QgsVectorLayer
:return: The buffered vector layer.
:rtype: QgsVectorLayer
"""
output_layer_name = clean_geometry_steps['output_layer_name']
output_layer_name = output_layer_name % layer.keywords['layer_purpose']
# start editing
layer.startEditing()
count = 0
# iterate through all features
request = QgsFeatureRequest().setSubsetOfAttributes([])
for feature in layer.getFeatures(request):
geom = feature.geometry()
was_valid, geometry_cleaned = geometry_checker(geom)
if was_valid:
# Do nothing if it was valid
pass
elif not was_valid and geometry_cleaned:
# Update the geometry if it was not valid, and clean now
layer.changeGeometry(feature.id(), geometry_cleaned, True)
else:
# Delete if it was not valid and not able to be cleaned
count += 1
layer.deleteFeature(feature.id())
if count:
LOGGER.critical(
'%s features have been removed from %s because of invalid '
'geometries.' % (count, layer.name()))
else:
LOGGER.info(
'No feature has been removed from the layer: %s' % layer.name())
# save changes
layer.commitChanges()
layer.keywords['title'] = output_layer_name
check_layer(layer)
return layer
def clean_layer(layer):
"""Clean a vector layer.
:param layer: The vector layer.
:type layer: qgis.core.QgsVectorLayer
:return: The buffered vector layer.
:rtype: qgis.core.QgsVectorLayer
"""
output_layer_name = clean_geometry_steps['output_layer_name']
output_layer_name = output_layer_name % layer.keywords['layer_purpose']
count = layer.featureCount()
parameters = {'INPUT': layer, 'OUTPUT': 'memory:'}
initialize_processing()
feedback = create_processing_feedback()
context = create_processing_context(feedback=feedback)
result = processing.run('qgis:fixgeometries', parameters, context=context)
if result is None:
raise ProcessingInstallationError
cleaned = result['OUTPUT']
cleaned.setName(output_layer_name)
removed_count = count - cleaned.featureCount()
if removed_count:
LOGGER.critical(
'{removed_count} features have been removed from {layer_name} '
'because of invalid geometries.'.format(
removed_count=removed_count, layer_name=layer.name()))
else:
LOGGER.info('No feature has been removed from the layer: '
'{layer_name}'.format(layer_name=layer.name()))
cleaned.keywords = layer.keywords.copy()
cleaned.keywords['title'] = output_layer_name
check_layer(cleaned)
return cleaned
def clean_layer(layer, callback=None):
"""Clean a vector layer.
:param layer: The vector layer.
:type layer: QgsVectorLayer
:param callback: A function to all to indicate progress. The function
editing should accept params 'current' (int), 'maximum' (int) and
'step' (str). Defaults to None.
:type callback: function
:return: The buffered vector layer.
:rtype: QgsVectorLayer
"""
output_layer_name = clean_geometry_steps['output_layer_name']
processing_step = clean_geometry_steps['step_name'] # NOQA
output_layer_name = output_layer_name % layer.keywords['layer_purpose']
# start editing
layer.startEditing()
count = 0
# iterate through all features
for feature in layer.getFeatures():
geom = feature.geometry()
geometry_cleaned = geometry_checker(geom)
if geometry_cleaned:
feature.setGeometry(geometry_cleaned)
else:
count += 1
layer.deleteFeature(feature.id())
LOGGER.critical(
'%s features have been removed from %s because of invalid geometries.'
% (count, layer.name()))
# save changes
layer.commitChanges()
layer.keywords['title'] = output_layer_name
check_layer(layer)
return layer