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[needs-docs][processing] Output count of retained and duplicate features from

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Delete duplicate geometries algorithm.

This matches the output of the delete duplicates by attribute
algorithm
This commit is contained in:
Nyall Dawson 2018-12-14 12:15:19 +10:00
parent 82c13bdde0
commit abc7b037d8
1 changed files with 13 additions and 2 deletions
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15
python/plugins/processing/algs/qgis/DeleteDuplicateGeometries.py
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@ -30,7 +30,8 @@ from qgis.core import (QgsFeatureRequest,
QgsFeatureSink,
QgsSpatialIndex,
QgsProcessingParameterFeatureSource,
QgsProcessingParameterFeatureSink)
QgsProcessingParameterFeatureSink,
QgsProcessingOutputNumber)
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
@ -38,6 +39,8 @@ class DeleteDuplicateGeometries(QgisAlgorithm):
INPUT = 'INPUT'
OUTPUT = 'OUTPUT'
RETAINED_COUNT = 'RETAINED_COUNT'
DUPLICATE_COUNT = 'DUPLICATE_COUNT'
def group(self):
return self.tr('Vector general')
@ -56,6 +59,9 @@ class DeleteDuplicateGeometries(QgisAlgorithm):
self.tr('Input layer')))
self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Cleaned')))
self.addOutput(QgsProcessingOutputNumber(self.RETAINED_COUNT, self.tr('Count of retained records')))
self.addOutput(QgsProcessingOutputNumber(self.DUPLICATE_COUNT, self.tr('Count of discarded duplicate records')))
def name(self):
return 'deleteduplicategeometries'
@ -95,6 +101,7 @@ class DeleteDuplicateGeometries(QgisAlgorithm):
unique_features = dict(geoms)
current = 0
removed = 0
for feature_id, geometry in geoms.items():
if feedback.isCanceled():
break
@ -116,6 +123,7 @@ class DeleteDuplicateGeometries(QgisAlgorithm):
if geometry.isGeosEqual(geoms[candidate_id]):
# candidate is a duplicate of feature
del unique_features[candidate_id]
removed += 1
current += 1
feedback.setProgress(int(0.80 * current * total) + 10) # takes about 80% of time
@ -138,4 +146,7 @@ class DeleteDuplicateGeometries(QgisAlgorithm):
feedback.setProgress(int(0.10 * current * total) + 90) # takes about 10% of time
return {self.OUTPUT: dest_id}
feedback.pushInfo(self.tr('{} duplicate features removed'.format(removed)))
return {self.OUTPUT: dest_id,
self.DUPLICATE_COUNT: removed,
self.RETAINED_COUNT: len(output_feature_ids)}