mirror of
https://github.com/qgis/QGIS.git
synced 2025-11-04 00:04:25 -05:00
[processing] restore Shortest path from layer to point
This commit is contained in:
Alexander Bruy
parent
494ceff3b4
commit
1e795960b6
@ -89,7 +89,7 @@ from .SelectByAttribute import SelectByAttribute
|
||||
from .SelectByExpression import SelectByExpression
|
||||
# from .ServiceAreaFromLayer import ServiceAreaFromLayer
|
||||
# from .ServiceAreaFromPoint import ServiceAreaFromPoint
|
||||
# from .ShortestPathLayerToPoint import ShortestPathLayerToPoint
|
||||
from .ShortestPathLayerToPoint import ShortestPathLayerToPoint
|
||||
from .ShortestPathPointToLayer import ShortestPathPointToLayer
|
||||
from .ShortestPathPointToPoint import ShortestPathPointToPoint
|
||||
from .SimplifyGeometries import SimplifyGeometries
|
||||
@ -274,6 +274,7 @@ class QGISAlgorithmProvider(QgsProcessingProvider):
|
||||
SaveSelectedFeatures(),
|
||||
SelectByAttribute(),
|
||||
SelectByExpression(),
|
||||
ShortestPathLayerToPoint(),
|
||||
ShortestPathPointToLayer(),
|
||||
ShortestPathPointToPoint(),
|
||||
SimplifyGeometries(),
|
||||
|
||||
@ -36,13 +36,19 @@ from qgis.core import (QgsWkbTypes,
|
||||
QgsFeature,
|
||||
QgsFeatureSink,
|
||||
QgsGeometry,
|
||||
QgsPointXY,
|
||||
QgsFields,
|
||||
QgsField,
|
||||
QgsFeatureRequest,
|
||||
QgsMessageLog,
|
||||
QgsProcessingParameterDefinition,
|
||||
QgsProcessingUtils)
|
||||
QgsProcessing,
|
||||
QgsProcessingParameterEnum,
|
||||
QgsProcessingParameterPoint,
|
||||
QgsProcessingParameterField,
|
||||
QgsProcessingParameterNumber,
|
||||
QgsProcessingParameterString,
|
||||
QgsProcessingParameterFeatureSource,
|
||||
QgsProcessingParameterFeatureSink,
|
||||
QgsProcessingParameterVectorLayer,
|
||||
QgsProcessingParameterDefinition)
|
||||
from qgis.analysis import (QgsVectorLayerDirector,
|
||||
QgsNetworkDistanceStrategy,
|
||||
QgsNetworkSpeedStrategy,
|
||||
@ -52,23 +58,14 @@ from qgis.analysis import (QgsVectorLayerDirector,
|
||||
from qgis.utils import iface
|
||||
|
||||
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
||||
from processing.core.parameters import (ParameterVector,
|
||||
ParameterPoint,
|
||||
ParameterNumber,
|
||||
ParameterString,
|
||||
ParameterTableField,
|
||||
ParameterSelection
|
||||
)
|
||||
from processing.core.outputs import OutputVector
|
||||
from processing.tools import dataobjects
|
||||
|
||||
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
|
||||
|
||||
|
||||
class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
|
||||
INPUT_VECTOR = 'INPUT_VECTOR'
|
||||
START_POINTS = 'START_POINT'
|
||||
INPUT = 'INPUT'
|
||||
START_POINTS = 'START_POINTS'
|
||||
END_POINT = 'END_POINT'
|
||||
STRATEGY = 'STRATEGY'
|
||||
DIRECTION_FIELD = 'DIRECTION_FIELD'
|
||||
@ -79,7 +76,7 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
SPEED_FIELD = 'SPEED_FIELD'
|
||||
DEFAULT_SPEED = 'DEFAULT_SPEED'
|
||||
TOLERANCE = 'TOLERANCE'
|
||||
OUTPUT_LAYER = 'OUTPUT_LAYER'
|
||||
OUTPUT = 'OUTPUT'
|
||||
|
||||
def icon(self):
|
||||
return QIcon(os.path.join(pluginPath, 'images', 'networkanalysis.svg'))
|
||||
@ -100,58 +97,59 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
self.tr('Fastest')
|
||||
]
|
||||
|
||||
self.addParameter(ParameterVector(self.INPUT_VECTOR,
|
||||
self.tr('Vector layer representing network'),
|
||||
[dataobjects.TYPE_VECTOR_LINE]))
|
||||
self.addParameter(ParameterVector(self.START_POINTS,
|
||||
self.tr('Vector layer with start points'),
|
||||
[dataobjects.TYPE_VECTOR_POINT]))
|
||||
self.addParameter(ParameterPoint(self.END_POINT,
|
||||
self.tr('End point')))
|
||||
self.addParameter(ParameterSelection(self.STRATEGY,
|
||||
self.tr('Path type to calculate'),
|
||||
self.STRATEGIES,
|
||||
default=0))
|
||||
self.addParameter(QgsProcessingParameterVectorLayer(self.INPUT,
|
||||
self.tr('Vector layer representing network'),
|
||||
[QgsProcessing.TypeVectorLine]))
|
||||
self.addParameter(QgsProcessingParameterFeatureSource(self.START_POINTS,
|
||||
self.tr('Vector layer with start points'),
|
||||
[QgsProcessing.TypeVectorPoint]))
|
||||
self.addParameter(QgsProcessingParameterPoint(self.END_POINT,
|
||||
self.tr('End point')))
|
||||
self.addParameter(QgsProcessingParameterEnum(self.STRATEGY,
|
||||
self.tr('Path type to calculate'),
|
||||
self.STRATEGIES,
|
||||
defaultValue=0))
|
||||
|
||||
params = []
|
||||
params.append(ParameterTableField(self.DIRECTION_FIELD,
|
||||
self.tr('Direction field'),
|
||||
self.INPUT_VECTOR,
|
||||
optional=True))
|
||||
params.append(ParameterString(self.VALUE_FORWARD,
|
||||
self.tr('Value for forward direction'),
|
||||
'',
|
||||
optional=True))
|
||||
params.append(ParameterString(self.VALUE_BACKWARD,
|
||||
self.tr('Value for backward direction'),
|
||||
'',
|
||||
optional=True))
|
||||
params.append(ParameterString(self.VALUE_BOTH,
|
||||
self.tr('Value for both directions'),
|
||||
'',
|
||||
optional=True))
|
||||
params.append(ParameterSelection(self.DEFAULT_DIRECTION,
|
||||
self.tr('Default direction'),
|
||||
list(self.DIRECTIONS.keys()),
|
||||
default=2))
|
||||
params.append(ParameterTableField(self.SPEED_FIELD,
|
||||
self.tr('Speed field'),
|
||||
self.INPUT_VECTOR,
|
||||
optional=True))
|
||||
params.append(ParameterNumber(self.DEFAULT_SPEED,
|
||||
self.tr('Default speed (km/h)'),
|
||||
0.0, 99999999.999999, 5.0))
|
||||
params.append(ParameterNumber(self.TOLERANCE,
|
||||
self.tr('Topology tolerance'),
|
||||
0.0, 99999999.999999, 0.0))
|
||||
params.append(QgsProcessingParameterField(self.DIRECTION_FIELD,
|
||||
self.tr('Direction field'),
|
||||
None,
|
||||
self.INPUT,
|
||||
optional=True))
|
||||
params.append(QgsProcessingParameterString(self.VALUE_FORWARD,
|
||||
self.tr('Value for forward direction'),
|
||||
optional=True))
|
||||
params.append(QgsProcessingParameterString(self.VALUE_BACKWARD,
|
||||
self.tr('Value for backward direction'),
|
||||
optional=True))
|
||||
params.append(QgsProcessingParameterString(self.VALUE_BOTH,
|
||||
self.tr('Value for both directions'),
|
||||
optional=True))
|
||||
params.append(QgsProcessingParameterEnum(self.DEFAULT_DIRECTION,
|
||||
self.tr('Default direction'),
|
||||
list(self.DIRECTIONS.keys()),
|
||||
defaultValue=2))
|
||||
params.append(QgsProcessingParameterField(self.SPEED_FIELD,
|
||||
self.tr('Speed field'),
|
||||
None,
|
||||
self.INPUT,
|
||||
optional=True))
|
||||
params.append(QgsProcessingParameterNumber(self.DEFAULT_SPEED,
|
||||
self.tr('Default speed (km/h)'),
|
||||
QgsProcessingParameterNumber.Double,
|
||||
5.0, False, 0, 99999999.99))
|
||||
params.append(QgsProcessingParameterNumber(self.TOLERANCE,
|
||||
self.tr('Topology tolerance'),
|
||||
QgsProcessingParameterNumber.Double,
|
||||
0.0, False, 0, 99999999.99))
|
||||
|
||||
for p in params:
|
||||
p.setFlags(p.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
|
||||
self.addParameter(p)
|
||||
|
||||
self.addOutput(OutputVector(self.OUTPUT_LAYER,
|
||||
self.tr('Shortest path'),
|
||||
datatype=[dataobjects.TYPE_VECTOR_LINE]))
|
||||
self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT,
|
||||
self.tr('Shortest path'),
|
||||
QgsProcessing.TypeVectorLine))
|
||||
|
||||
def name(self):
|
||||
return 'shortestpathlayertopoint'
|
||||
@ -160,21 +158,19 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
return self.tr('Shortest path (layer to point)')
|
||||
|
||||
def processAlgorithm(self, parameters, context, feedback):
|
||||
layer = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.INPUT_VECTOR), context)
|
||||
startPoints = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.START_POINTS), context)
|
||||
endPoint = self.getParameterValue(self.END_POINT)
|
||||
strategy = self.getParameterValue(self.STRATEGY)
|
||||
layer = self.parameterAsVectorLayer(parameters, self.INPUT, context)
|
||||
startPoints = self.parameterAsSource(parameters, self.START_POINTS, context)
|
||||
endPoint = self.parameterAsPoint(parameters, self.END_POINT, context)
|
||||
strategy = self.parameterAsEnum(parameters, self.STRATEGY, context)
|
||||
|
||||
directionFieldName = self.getParameterValue(self.DIRECTION_FIELD)
|
||||
forwardValue = self.getParameterValue(self.VALUE_FORWARD)
|
||||
backwardValue = self.getParameterValue(self.VALUE_BACKWARD)
|
||||
bothValue = self.getParameterValue(self.VALUE_BOTH)
|
||||
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
|
||||
bothValue = self.getParameterValue(self.VALUE_BOTH)
|
||||
defaultDirection = self.getParameterValue(self.DEFAULT_DIRECTION)
|
||||
speedFieldName = self.getParameterValue(self.SPEED_FIELD)
|
||||
defaultSpeed = self.getParameterValue(self.DEFAULT_SPEED)
|
||||
tolerance = self.getParameterValue(self.TOLERANCE)
|
||||
directionFieldName = self.parameterAsString(parameters, self.DIRECTION_FIELD, context)
|
||||
forwardValue = self.parameterAsString(parameters, self.VALUE_FORWARD, context)
|
||||
backwardValue = self.parameterAsString(parameters, self.VALUE_BACKWARD, context)
|
||||
bothValue = self.parameterAsString(parameters, self.VALUE_BOTH, context)
|
||||
defaultDirection = self.parameterAsEnum(parameters, self.DEFAULT_DIRECTION, context)
|
||||
speedFieldName = self.parameterAsString(parameters, self.SPEED_FIELD, context)
|
||||
defaultSpeed = self.parameterAsDouble(parameters, self.DEFAULT_SPEED, context)
|
||||
tolerance = self.parameterAsDouble(parameters, self.TOLERANCE, context)
|
||||
|
||||
fields = QgsFields()
|
||||
fields.append(QgsField('start', QVariant.String, '', 254, 0))
|
||||
@ -184,17 +180,14 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
feat = QgsFeature()
|
||||
feat.setFields(fields)
|
||||
|
||||
writer = self.getOutputFromName(
|
||||
self.OUTPUT_LAYER).getVectorWriter(fields, QgsWkbTypes.LineString, layer.crs(), context)
|
||||
|
||||
tmp = endPoint.split(',')
|
||||
endPoint = QgsPointXY(float(tmp[0]), float(tmp[1]))
|
||||
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
|
||||
fields, QgsWkbTypes.LineString, layer.crs())
|
||||
|
||||
directionField = -1
|
||||
if directionFieldName is not None:
|
||||
if directionFieldName:
|
||||
directionField = layer.fields().lookupField(directionFieldName)
|
||||
speedField = -1
|
||||
if speedFieldName is not None:
|
||||
if speedFieldName:
|
||||
speedField = layer.fields().lookupField(speedFieldName)
|
||||
|
||||
director = QgsVectorLayerDirector(layer,
|
||||
@ -222,12 +215,16 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
feedback.pushInfo(self.tr('Loading start points...'))
|
||||
request = QgsFeatureRequest()
|
||||
request.setFlags(request.flags() ^ QgsFeatureRequest.SubsetOfAttributes)
|
||||
features = QgsProcessingUtils.getFeatures(startPoints, context, request)
|
||||
count = QgsProcessingUtils.featureCount(startPoints, context)
|
||||
features = source.getFeatures(request)
|
||||
total = 100.0 / source.featureCount() if source.featureCount() else 0
|
||||
|
||||
points = [endPoint]
|
||||
for f in features:
|
||||
for current, f in enumerate(features):
|
||||
if feedback.isCanceled():
|
||||
break
|
||||
|
||||
points.append(f.geometry().asPoint())
|
||||
feedback.setProgress(int(current * total))
|
||||
|
||||
feedback.pushInfo(self.tr('Building graph...'))
|
||||
snappedPoints = director.makeGraph(builder, points)
|
||||
@ -238,7 +235,7 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
idxEnd = graph.findVertex(snappedPoints[0])
|
||||
route = []
|
||||
|
||||
total = 100.0 / count if count else 1
|
||||
total = 100.0 / source.featureCount() if source.featureCount() else 1
|
||||
for i in range(1, count + 1):
|
||||
idxStart = graph.findVertex(snappedPoints[i])
|
||||
tree, cost = QgsGraphAnalyzer.dijkstra(graph, idxStart, 0)
|
||||
@ -264,10 +261,10 @@ class ShortestPathLayerToPoint(QgisAlgorithm):
|
||||
feat['start'] = points[i].toString()
|
||||
feat['end'] = endPoint.toString()
|
||||
feat['cost'] = cost / multiplier
|
||||
writer.addFeature(feat, QgsFeatureSink.FastInsert)
|
||||
sink.addFeature(feat, QgsFeatureSink.FastInsert)
|
||||
|
||||
route[:] = []
|
||||
|
||||
feedback.setProgress(int(i * total))
|
||||
|
||||
del writer
|
||||
return {self.OUTPUT: dest_id}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user