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Better reporting of errors when paths cannot be found, also

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output point but with no geometry and missing attributes so
that it's clear which points could not be linked
This commit is contained in:
Nyall Dawson 2017-10-28 15:55:16 +10:00
parent 36a38f4e2d
commit 4149da0556
2 changed files with 15 additions and 4 deletions
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10
python/plugins/processing/algs/qgis/ShortestPathLayerToPoint.py
View File

@ -246,12 +246,18 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
break
idxStart = graph.findVertex(snappedPoints[i])
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
if tree[idxEnd] == -1:
msg = self.tr('There is no route from start point ({}) to end point ({}).'.format(points[i].toString(), endPoint.toString()))
feedback.setProgressText(msg)
QgsMessageLog.logMessage(msg, self.tr('Processing'), QgsMessageLog.WARNING)
feedback.reportError(msg)
# add feature with no geometry
feat.clearGeometry()
attrs = source_attributes[i]
attrs.append(points[i].toString())
feat.setAttributes(attrs)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
continue
cost = 0.0

9
python/plugins/processing/algs/qgis/ShortestPathPointToLayer.py
View File

@ -250,8 +250,13 @@ class ShortestPathPointToLayer(QgisAlgorithm):
if tree[idxEnd] == -1:
msg = self.tr('There is no route from start point ({}) to end point ({}).'.format(startPoint.toString(), points[i].toString()))
feedback.setProgressText(msg)
QgsMessageLog.logMessage(msg, self.tr('Processing'), QgsMessageLog.WARNING)
feedback.reportError(msg)
# add feature with no geometry
feat.clearGeometry()
attrs = source_attributes[i]
attrs.extend([NULL, points[i].toString()])
feat.setAttributes(attrs)
sink.addFeature(feat, QgsFeatureSink.FastInsert)
continue
cost = 0.0