def convertUnsupportedFormats(self, progress):
i = 0
progress.setText("Converting outputs")
for out in self.outputs:
if isinstance(out, OutputVector):
if out.compatible is not None:
layer = QGisLayers.getObjectFromUri(out.compatible)
if layer is None: # for the case of memory layer, if the getCompatible method has been called
continue
provider = layer.dataProvider()
writer = out.getVectorWriter( provider.fields(), provider.geometryType(), layer.crs())
features = QGisLayers.features(layer)
for feature in features:
writer.addFeature(feature)
elif isinstance(out, OutputRaster):
if out.compatible is not None:
layer = QGisLayers.getObjectFromUri(out.compatible)
provider = layer.dataProvider()
writer = QgsRasterFileWriter(out.value)
format = self.getFormatShortNameFromFilename(out.value)
writer.setOutputFormat(format);
writer.writeRaster(layer.pipe(), layer.width(), layer.height(), layer.extent(), layer.crs())
elif isinstance(out, OutputTable):
if out.compatible is not None:
layer = QGisLayers.getObjectFromUri(out.compatible)
provider = layer.dataProvider()
writer = out.getTableWriter(provider.fields())
features = QGisLayers.features(layer)
for feature in features:
writer.addRecord(feature)
progress.setPercentage(100 * i / float(len(self.outputs)))
def getDefaultCellsize(self):
cellsize = 0
for param in self.parameters:
if param.value:
if isinstance(param, ParameterRaster):
if isinstance(param.value, QgsRasterLayer):
layer = param.value
else:
layer = QGisLayers.getObjectFromUri(param.value)
cellsize = max(cellsize,
(layer.extent().xMaximum() -
layer.extent().xMinimum()) / layer.width())
elif isinstance(param, ParameterMultipleInput):
layers = param.value.split(";")
for layername in layers:
layer = QGisLayers.getObjectFromUri(layername)
if isinstance(layer, QgsRasterLayer):
cellsize = max(cellsize,
(layer.extent().xMaximum() -
layer.extent().xMinimum()) /
layer.width())
if cellsize == 0:
cellsize = 1
return cellsize
def processAlgorithm(self, progress):
filename = self.getParameterValue(self.INPUT)
inputLayer = QGisLayers.getObjectFromUri(filename)
method = self.getParameterValue(self.METHOD)
filename = self.getParameterValue(self.INTERSECT)
selectLayer = QGisLayers.getObjectFromUri(filename)
oldSelection = set(inputLayer.selectedFeaturesIds())
index = spatialIndex = utils.createSpatialIndex(inputLayer)
feat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
current = 0
features = QGisLayers.features(selectLayer)
total = 100.0 / float(len(features))
for f in features:
geom = QgsGeometry(f.geometry())
intersects = index.intersects(geom.boundingBox())
for i in intersects:
request = QgsFeatureRequest().setFilterFid(i)
feat = inputLayer.getFeatures(request).next()
tmpGeom = QgsGeometry(feat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(feat.id())
current += 1
progress.setPercentage(int(current * total))
if method == 1:
selectedSet = list(oldSelection.union(selectedSet))
elif method == 2:
selectedSet = list(oldSelection.difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
self.setOutputValue(self.OUTPUT, filename)
def processAlgorithm(self, progress):
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
fieldName = self.getParameterValue(self.FIELD)
fieldIdx = pointLayer.fieldNameIndex(self.getParameterValue(self.WEIGHT))
polyProvider = polyLayer.dataProvider()
idxCount, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), fieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
fieldList.toList(), polyProvider.geometryType(), polyProvider.crs()
)
spatialIndex = utils.createSpatialIndex(pointLayer)
ftPoint = QgsFeature()
outFeat = QgsFeature()
geom = QgsGeometry()
current = 0
hasIntersections = False
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
for ftPoly in features:
geom = ftPoly.geometry()
attrs = ftPoly.attributes()
count = 0
hasIntersections = False
points = spatialIndex.intersects(geom.boundingBox())
if len(points) > 0:
hasIntersections = True
if hasIntersections:
progress.setText(str(len(points)))
for i in points:
request = QgsFeatureRequest().setFilterFid(i)
ftPoint = pointLayer.getFeatures(request).next()
tmpGeom = QgsGeometry(ftPoint.geometry())
if geom.contains(tmpGeom):
weight = str(ftPoint.attributes()[fieldIdx])
try:
count += float(weight)
except:
pass # ignore fields with non-numeric values
outFeat.setGeometry(geom)
if idxCount == len(attrs):
attrs.append(count)
else:
attrs[idxCount] = count
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def calculateResamplingExtent(self):
'''this method calculates the resampling extent, but it might set self.resample
to false if, with the current layers, there is no need to resample'''
auto = SextanteConfig.getSetting(SagaUtils.SAGA_AUTO_RESAMPLING)
if auto:
first = True;
self.inputExtentsCount = 0
for param in self.parameters:
if param.value:
if isinstance(param, ParameterRaster):
if isinstance(param.value, QgsRasterLayer):
layer = param.value
else:
layer = QGisLayers.getObjectFromUri(param.value)
self.addToResamplingExtent(layer, first)
first = False
if isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_RASTER:
layers = param.value.split(";")
for layername in layers:
layer = QGisLayers.getObjectFromUri(layername)
self.addToResamplingExtent(layer, first)
first = False
if self.inputExtentsCount < 2:
self.resample = False
else:
self.xmin = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_XMIN)
self.xmax = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_XMAX)
self.ymin = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_YMIN)
self.ymax = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_YMAX)
self.cellsize = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_CELLSIZE)
def getMinCoveringExtent(self):
first = True
found = False
for param in self.params:
if param.value:
if isinstance(param, (ParameterRaster, ParameterVector)):
if isinstance(param.value,
(QgsRasterLayer, QgsVectorLayer)):
layer = param.value
else:
layer = QGisLayers.getObjectFromUri(param.value)
if layer:
found = True
self.addToRegion(layer, first)
first = False
elif isinstance(param, ParameterMultipleInput):
layers = param.value.split(";")
for layername in layers:
layer = QGisLayers.getObjectFromUri(layername, first)
if layer:
found = True
self.addToRegion(layer, first)
first = False
if found:
return str(self.xmin) + "," + str(self.xmax) + "," + str(
self.ymin) + "," + str(self.ymax)
else:
return None
def getSafeExportedLayers(self):
'''Returns not the value entered by the user, but a string with semicolon-separated filenames
which contains the data of the selected layers, but saved in a standard format (currently
shapefiles for vector layers and GeoTiff for raster) so that they can be opened by most
external applications.
If there is a selection and SEXTANTE is configured to use just the selection, if exports
the layer even if it is already in a suitable format.
Works only if the layer represented by the parameter value is currently loaded in QGIS.
Otherwise, it will not perform any export and return the current value string.
If the current value represents a layer in a suitable format, it does no export at all
and returns that value.
Currently, it works just for vector layer. In the case of raster layers, it returns the
parameter value.
The layers are exported just the first time the method is called. The method can be called
several times and it will always return the same string, performing the export only the first time.'''
if self.exported:
return self.exported
self.exported = self.value
layers = self.value.split(";")
if layers == None or len(layers) == 0:
return self.value
if self.datatype == ParameterMultipleInput.TYPE_RASTER:
for layerfile in layers:
layer = QGisLayers.getObjectFromUri(layerfile, False)
if layer:
filename = LayerExporter.exportRasterLayer(layer)
self.exported = self.exported.replace(layerfile, filename)
return self.exported
else:
for layerfile in layers:
layer = QGisLayers.getObjectFromUri(layerfile, False)
if layer:
filename = LayerExporter.exportVectorLayer(layer)
self.exported = self.exported.replace(layerfile, filename)
return self.exported
def exportVectorLayer(self, orgFilename):
#only export to an intermediate shp if the layer is not file-based.
#We assume that almost all file formats will be supported by ogr
#We also export if there is a selection
if not os.path.exists(orgFilename):
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
filename = LayerExporter.exportVectorLayer(layer)
else:
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
useSelection = SextanteConfig.getSetting(SextanteConfig.USE_SELECTED)
if useSelection and layer.selectedFeatureCount() != 0:
filename = LayerExporter.exportVectorLayer(layer)
else:
filename = orgFilename
else:
filename = orgFilename
destFilename = self.getTempFilename()
self.exportedLayers[orgFilename]= destFilename
command = "v.in.ogr"
command += " min_area=-1"
command +=" dsn=\"" + os.path.dirname(filename) + "\""
command +=" layer=" + os.path.basename(filename)[:-4]
command +=" output=" + destFilename;
command +=" --overwrite -o"
return command
def exportVectorLayer(self, orgFilename):
#only export to an intermediate shp if the layer is not file-based.
#We assume that almost all file formats will be supported by ogr
#We also export if there is a selection
if not os.path.exists(orgFilename):
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
filename = LayerExporter.exportVectorLayer(layer)
else:
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
useSelection = SextanteConfig.getSetting(
SextanteConfig.USE_SELECTED)
if useSelection and layer.selectedFeatureCount() != 0:
filename = LayerExporter.exportVectorLayer(layer)
else:
filename = orgFilename
else:
filename = orgFilename
destFilename = self.getTempFilename()
self.exportedLayers[orgFilename] = destFilename
command = "v.in.ogr"
command += " min_area=-1"
command += " dsn=\"" + os.path.dirname(filename) + "\""
command += " layer=" + os.path.basename(filename)[:-4]
command += " output=" + destFilename
command += " --overwrite -o"
return command
def processAlgorithm(self, progress):
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
fieldName = self.getParameterValue(self.FIELD)
classFieldName = self.getParameterValue(self.CLASSFIELD)
polyProvider = polyLayer.dataProvider()
pointProvider = pointLayer.dataProvider()
if polyProvider.crs() != pointProvider.crs():
SextanteLog.addToLog(SextanteLog.LOG_WARNING,
"CRS warning: Input layers have non-matching CRS. This may cause unexpected results.")
classFieldIndex = pointProvider.fieldNameIndex(classFieldName)
idxCount, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), fieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList,
polyProvider.geometryType(), polyProvider.crs())
spatialIndex = utils.createSpatialIndex(pointLayer)
ftPoint = QgsFeature()
outFeat = QgsFeature()
geom = QgsGeometry()
current = 0
hasIntersections = False
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
for ftPoly in features:
geom = ftPoly.geometry()
atMap = ftPoly.attributes()
classes = []
hasIntersections = False
points = spatialIndex.intersects(geom.boundingBox())
if len(points) > 0:
hasIntersections = True
if hasIntersections:
for i in points:
pointLayer.featureAtId(int(i), ftPoint, True, True)
tmpGeom = QgsGeometry(ftPoint.geometry())
if geom.contains(tmpGeom):
clazz = ftPoint.attributes()[classFieldIndex].toString()
if not clazz in classes:
classes.append(clazz)
outFeat.setGeometry(geom)
if idxCount == len(atMap):
atMap.append(QVariant(len(classes)))
else:
atMap[idxCount] = QVariant(len(classes))
outFeat.setAttributes(atMap)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(current / total)
del writer
def processAlgorithm(self, progress):
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
fieldName = self.getParameterValue(self.FIELD)
polyProvider = polyLayer.dataProvider()
pointProvider = pointLayer.dataProvider()
if polyProvider.crs() != pointProvider.crs():
SextanteLog.addToLog(SextanteLog.LOG_WARNING,
"CRS warning: Input layers have non-matching CRS. This may cause unexpected results.")
idxCount, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), fieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList,
polyProvider.geometryType(), polyProvider.crs())
spatialIndex = utils.createSpatialIndex(pointLayer)
pointProvider.rewind()
pointProvider.select()
allAttrs = polyLayer.pendingAllAttributesList()
polyLayer.select(allAttrs)
ftPoly = QgsFeature()
ftPoint = QgsFeature()
outFeat = QgsFeature()
geom = QgsGeometry()
current = 0
hasIntersections = False
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
for ftPoly in features:
geom = ftPoly.geometry()
atMap = ftPoly.attributeMap()
count = 0
hasIntersections = False
points = spatialIndex.intersects(geom.boundingBox())
if len(points) > 0:
hasIntersections = True
if hasIntersections:
for i in points:
pointLayer.featureAtId(int(i), ftPoint, True, False)
tmpGeom = QgsGeometry(ftPoint.geometry())
if geom.contains(tmpGeom):
count += 1
outFeat.setGeometry(geom)
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(idxCount, QVariant(count))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
inField = self.getParameterValue(PointsInPolygon.FIELD)
polyLayer = QGisLayers.getObjectFromUri(
self.getParameterValue(PointsInPolygon.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(
self.getParameterValue(PointsInPolygon.POINTS))
polyProvider = polyLayer.dataProvider()
pointProvider = pointLayer.dataProvider()
if polyProvider.crs() <> pointProvider.crs():
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"CRS warning!Warning: Input layers have non-matching CRS.\nThis may cause unexpected results."
)
allAttrs = polyProvider.attributeIndexes()
polyProvider.select(allAttrs)
allAttrs = pointProvider.attributeIndexes()
pointProvider.select(allAttrs)
fieldList = ftools_utils.getFieldList(polyLayer)
index = polyProvider.fieldNameIndex(unicode(inField))
if index == -1:
index = polyProvider.fieldCount()
field = QgsField(unicode(inField), QVariant.Double, "real", 24, 15,
"point count field")
fieldList[index] = field
sRs = polyProvider.crs()
writer = self.getOutputFromName(
PointsInPolygon.OUTPUT).getVectorWriter(
fieldList, polyProvider.geometryType(), sRs)
inFeat = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
start = 15.00
add = 85.00 / polyProvider.featureCount()
spatialIndex = ftools_utils.createIndex(pointProvider)
while polyProvider.nextFeature(inFeat):
inGeom = inFeat.geometry()
atMap = inFeat.attributeMap()
outFeat.setAttributeMap(atMap)
outFeat.setGeometry(inGeom)
pointList = []
count = 0
#(check, pointList) = pointLayer.featuresInRectangle(inGeom.boundingBox(), True, True)
#pointLayer.select(inGeom.boundingBox(), False)
#pointList = pointLayer.selectedFeatures()
pointList = spatialIndex.intersects(inGeom.boundingBox())
if len(pointList) > 0: check = 0
else: check = 1
if check == 0:
for i in pointList:
pointProvider.featureAtId(int(i), inFeatB, True, allAttrs)
tmpGeom = QgsGeometry(inFeatB.geometry())
if inGeom.contains(tmpGeom):
count = count + 1
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(index, QVariant(count))
writer.addFeature(outFeat)
start = start + add
progress.setPercentage(start)
del writer
def getMinCoveringExtent(self):
first = True
found = False
for param in self.params:
if param.value:
if isinstance(param, (ParameterRaster, ParameterVector)):
if isinstance(param.value, (QgsRasterLayer, QgsVectorLayer)):
layer = param.value
else:
layer = QGisLayers.getObjectFromUri(param.value)
if layer:
found = True
self.addToRegion(layer, first)
first = False
elif isinstance(param, ParameterMultipleInput):
layers = param.value.split(";")
for layername in layers:
layer = QGisLayers.getObjectFromUri(layername, first)
if layer:
found = True
self.addToRegion(layer, first)
first = False
if found:
return str(self.xmin) + "," + str(self.xmax) + "," + str(self.ymin) + "," + str(self.ymax)
else:
return None
def processAlgorithm(self, progress):
filename = self.getParameterValue(self.INPUT)
inputLayer = QGisLayers.getObjectFromUri(filename)
method = self.getParameterValue(self.METHOD)
filename = self.getParameterValue(self.INTERSECT)
selectLayer = QGisLayers.getObjectFromUri(filename)
oldSelection = set(inputLayer.selectedFeaturesIds())
index = spatialIndex = utils.createSpatialIndex(inputLayer)
feat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
current = 0
features = QGisLayers.features(selectLayer)
total = 100.0 / float(len(features))
for f in features:
geom = QgsGeometry(f.geometry())
intersects = index.intersects(geom.boundingBox())
for i in intersects:
request = QgsFeatureRequest().setFilterFid(i)
feat = inputLayer.getFeatures(request).next()
tmpGeom = QgsGeometry(feat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(feat.id())
current += 1
progress.setPercentage(int(current * total))
if method == 1:
selectedSet = list(oldSelection.union(selectedSet))
elif method == 2:
selectedSet = list(oldSelection.difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
self.setOutputValue(self.OUTPUT, filename)
def exportVectorLayer(self, orgFilename):
#TODO: improve this. We are now exporting if it is not a shapefile,
#but the functionality of v.in.ogr could be used for this.
#We also export if there is a selection
if not os.path.exists(orgFilename) or not orgFilename.endswith("shp"):
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
filename = LayerExporter.exportVectorLayer(layer)
else:
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
useSelection = SextanteConfig.getSetting(SextanteConfig.USE_SELECTED)
if useSelection and layer.selectedFeatureCount() != 0:
filename = LayerExporter.exportVectorLayer(layer)
else:
filename = orgFilename
else:
filename = orgFilename
destFilename = self.getTempFilename()
self.exportedLayers[orgFilename]= destFilename
command = "v.in.ogr"
min_area = self.getParameterValue(self.GRASS_MIN_AREA_PARAMETER);
command += " min_area=" + str(min_area)
snap = self.getParameterValue(self.GRASS_SNAP_TOLERANCE_PARAMETER);
command += " snap=" + str(snap)
command += " dsn=\"" + os.path.dirname(filename) + "\""
command += " layer=" + os.path.basename(filename)[:-4]
command += " output=" + destFilename;
command += " --overwrite -o"
return command
def calculateResamplingExtent(self):
'''this method calculates the resampling extent, but it might set self.resample
to false if, with the current layers, there is no need to resample'''
auto = SextanteConfig.getSetting(SagaUtils.SAGA_AUTO_RESAMPLING)
if auto:
first = True;
self.inputExtentsCount = 0
for param in self.parameters:
if param.value:
if isinstance(param, ParameterRaster):
if isinstance(param.value, QgsRasterLayer):
layer = param.value
else:
layer = QGisLayers.getObjectFromUri(param.value)
self.addToResamplingExtent(layer, first)
first = False
if isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_RASTER:
layers = param.value.split(";")
for layername in layers:
layer = QGisLayers.getObjectFromUri(layername)
self.addToResamplingExtent(layer, first)
first = False
if self.inputExtentsCount < 2:
self.resample = False
else:
self.xmin = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_XMIN)
self.xmax = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_XMAX)
self.ymin = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_YMIN)
self.ymax = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_YMAX)
self.cellsize = SextanteConfig.getSetting(SagaUtils.SAGA_RESAMPLING_REGION_CELLSIZE)
def exportVectorLayer(self, orgFilename):
#TODO: improve this. We are now exporting if it is not a shapefile,
#but the functionality of v.in.ogr could be used for this.
#We also export if there is a selection
if not os.path.exists(orgFilename) or not orgFilename.endswith("shp"):
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
filename = LayerExporter.exportVectorLayer(layer)
else:
layer = QGisLayers.getObjectFromUri(orgFilename, False)
if layer:
useSelection = SextanteConfig.getSetting(
SextanteConfig.USE_SELECTED)
if useSelection and layer.selectedFeatureCount() != 0:
filename = LayerExporter.exportVectorLayer(layer)
else:
filename = orgFilename
else:
filename = orgFilename
destFilename = self.getTempFilename()
self.exportedLayers[orgFilename] = destFilename
command = "v.in.ogr"
min_area = self.getParameterValue(self.GRASS_MIN_AREA_PARAMETER)
command += " min_area=" + str(min_area)
snap = self.getParameterValue(self.GRASS_SNAP_TOLERANCE_PARAMETER)
command += " snap=" + str(snap)
command += " dsn=\"" + os.path.dirname(filename) + "\""
command += " layer=" + os.path.basename(filename)[:-4]
command += " output=" + destFilename
command += " --overwrite -o"
return command
def processAlgorithm(self, progress):
inLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
inField = self.getParameterValue(self.INPUT_FIELD)
targetLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.TARGET_LAYER))
targetField = self.getParameterValue(self.TARGET_FIELD)
matType = self.getParameterValue(self.MATRIX_TYPE)
nPoints = self.getParameterValue(self.NEAREST_POINTS)
outputFile = self.getOutputValue(self.DISTANCE_MATRIX)
if nPoints < 1:
nPoints = len(QGisLayers.features(targetLayer))
# prepare CSV file writer
csvFile = open(outputFile, "wb")
self.writer = UnicodeWriter(csvFile)
if matType == 0: # Linear distance matrix
self.linearMatrix(inLayer, inField, targetLayer, targetField, matType, nPoints, progress)
elif matType == 1: # Standard distance matrix
self.regularMatrix(inLayer, inField, targetLayer, targetField, nPoints, progress)
elif matType == 2: # Summary distance matrix
self.linearMatrix(inLayer, inField, targetLayer, targetField, matType, nPoints, progress)
csvFile.close()
del self.writer
def convertUnsupportedFormats(self, progress):
i = 0
progress.setText("Converting outputs")
for out in self.outputs:
if isinstance(out, OutputVector):
if out.compatible is not None:
layer = QGisLayers.getObjectFromUri(out.compatible)
if layer is None: # for the case of memory layer, if the getCompatible method has been called
continue
provider = layer.dataProvider()
writer = out.getVectorWriter(provider.fields(),
provider.geometryType(),
layer.crs())
features = QGisLayers.features(layer)
for feature in features:
writer.addFeature(feature)
elif isinstance(out, OutputRaster):
if out.compatible is not None:
layer = QGisLayers.getObjectFromUri(out.compatible)
provider = layer.dataProvider()
writer = QgsRasterFileWriter(out.value)
format = self.getFormatShortNameFromFilename(out.value)
writer.setOutputFormat(format)
writer.writeRaster(layer.pipe(), layer.width(),
layer.height(), layer.extent(),
layer.crs())
elif isinstance(out, OutputTable):
if out.compatible is not None:
layer = QGisLayers.getObjectFromUri(out.compatible)
provider = layer.dataProvider()
writer = out.getTableWriter(provider.fields())
features = QGisLayers.features(layer)
for feature in features:
writer.addRecord(feature)
progress.setPercentage(100 * i / float(len(self.outputs)))
def getSafeExportedLayers(self):
'''Returns not the value entered by the user, but a string with semicolon-separated filenames
which contains the data of the selected layers, but saved in a standard format (currently
shapefiles for vector layers and GeoTiff for raster) so that they can be opened by most
external applications.
If there is a selection and SEXTANTE is configured to use just the selection, if exports
the layer even if it is already in a suitable format.
Works only if the layer represented by the parameter value is currently loaded in QGIS.
Otherwise, it will not perform any export and return the current value string.
If the current value represents a layer in a suitable format, it does no export at all
and returns that value.
Currently, it works just for vector layer. In the case of raster layers, it returns the
parameter value.
The layers are exported just the first time the method is called. The method can be called
several times and it will always return the same string, performing the export only the first time.'''
if self.exported:
return self.exported
self.exported = self.value
layers = self.value.split(";")
if layers == None or len(layers) == 0:
return self.value
if self.datatype == ParameterMultipleInput.TYPE_RASTER:
for layerfile in layers:
layer = QGisLayers.getObjectFromUri(layerfile, False)
if layer:
filename = LayerExporter.exportRasterLayer(layer)
self.exported = self.exported.replace(layerfile, filename)
return self.exported
else:
for layerfile in layers:
layer = QGisLayers.getObjectFromUri(layerfile, False)
if layer:
filename = LayerExporter.exportVectorLayer(layer)
self.exported = self.exported.replace(layerfile, filename)
return self.exported
def processAlgorithm(self, progress):
# Include must be done here to avoid cyclic import
from sextante.core.Sextante import Sextante
qgis = Sextante.getInterface()
layer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.LAYERNAME))
layername = layer.name()
table = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INFILENAME))
infilename = table.name()
joinfield = self.getParameterValue(self.JOINFIELD)
joinattribute = self.getParameterValue(self.JOINATTRIBUTE)
outfilename = self.getOutputValue(self.OUTFILENAME)
notfoundname = self.getOutputValue(self.NOTFOUNDNAME)
message = mmqgisx_attribute_join(qgis, layername, infilename,
joinfield, joinattribute, outfilename,
notfoundname, False)
if message:
raise GeoAlgorithmExecutionException(message)
def processAlgorithm(self, progress):
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
fieldName = self.getParameterValue(self.FIELD)
fieldIdx = pointLayer.fieldNameIndex(self.getParameterValue(self.WEIGHT))
polyProvider = polyLayer.dataProvider()
idxCount, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), fieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList.toList(),
polyProvider.geometryType(), polyProvider.crs())
spatialIndex = utils.createSpatialIndex(pointLayer)
ftPoint = QgsFeature()
outFeat = QgsFeature()
geom = QgsGeometry()
current = 0
hasIntersections = False
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
for ftPoly in features:
geom = ftPoly.geometry()
attrs = ftPoly.attributes()
count = 0
hasIntersections = False
points = spatialIndex.intersects(geom.boundingBox())
if len(points) > 0:
hasIntersections = True
if hasIntersections:
progress.setText(str(len(points)))
for i in points:
request = QgsFeatureRequest().setFilterFid(i)
ftPoint = pointLayer.getFeatures(request).next()
tmpGeom = QgsGeometry(ftPoint.geometry())
if geom.contains(tmpGeom):
weight = str(ftPoint.attributes()[fieldIdx])
try:
count += float(weight)
except:
pass #ignore fields with non-numeric values
outFeat.setGeometry(geom)
if idxCount == len(attrs):
attrs.append(count)
else:
attrs[idxCount] = count
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
hublayer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.HUBNAME))
spokelayer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.SPOKENAME))
hubattr = self.getParameterValue(self.HUBATTRIBUTE)
spokeattr = self.getParameterValue(self.SPOKEATTRIBUTE)
if hublayer == spokelayer:
raise GeoAlgorithmExecutionException(
"Same layer given for both hubs and spokes")
hubindex = hublayer.dataProvider().fieldNameIndex(hubattr)
spokeindex = spokelayer.dataProvider().fieldNameIndex(spokeattr)
outfields = spokelayer.pendingFields()
output = self.getOutputFromName(self.SAVENAME)
out = output.getVectorWriter(outfields, QGis.WKBLineString,
spokelayer.crs())
# Scan spoke points
linecount = 0
spokepoints = QGisLayers.features(spokelayer)
i = 0
for spokepoint in spokepoints:
i += 1
spokex = spokepoint.geometry().boundingBox().center().x()
spokey = spokepoint.geometry().boundingBox().center().y()
spokeid = unicode(spokepoint.attributes()[spokeindex])
progress.setPercentage(float(i) / len(spokepoints) * 100)
# Scan hub points to find first matching hub
hubpoints = QGisLayers.features(hublayer)
for hubpoint in hubpoints:
hubid = unicode(hubpoint.attributes()[hubindex])
if hubid == spokeid:
hubx = hubpoint.geometry().boundingBox().center().x()
huby = hubpoint.geometry().boundingBox().center().y()
# Write line to the output file
outfeature = QgsFeature()
outfeature.setAttributes(spokepoint.attributes())
polyline = []
polyline.append(QgsPoint(spokex, spokey))
polyline.append(QgsPoint(hubx, huby))
geometry = QgsGeometry()
outfeature.setGeometry(geometry.fromPolyline(polyline))
out.addFeature(outfeature)
linecount = linecount + 1
break
del out
if linecount <= 0:
raise GeoAlgorithmExecutionException(
"No spoke/hub matches found to create lines")
def processAlgorithm(self, progress):
filename = self.getParameterValue(self.INPUT)
inputLayer = QGisLayers.getObjectFromUri(filename)
method = self.getParameterValue(self.METHOD)
selection = self.getParameterValue(self.USE_SELECTED)
filename = self.getParameterValue(self.INTERSECT)
selectLayer = QGisLayers.getObjectFromUri(filename)
inputProvider = inputLayer.dataProvider()
selectProvider = selectLayer.dataProvider()
index = utils.createSpatialIndex(inputProvider)
inputProvider.select()
selectProvider.select()
feat = QgsFeature()
infeat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
if selection:
features = selectLayer.selectedFeatures()
total = 100.0 / float(len(features))
current = 0
for feat in features:
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for i in intersects:
inputProvider.featureAtId(i, infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
current += 1
progress.setPercentage(int(current * total))
else:
total = 100.0 / float(selectProvider.featureCount())
current = 0
while selectProvider.nextFeature(feat):
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for i in intersects:
inputProvider.featureAtId(i, infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
current += 1
progress.setPercentage(int(current * total))
if method == 1:
selectedSet = list(
set(inputLayer.selectedFeaturesIds()).union(selectedSet))
elif method == 2:
selectedSet = list(
set(inputLayer.selectedFeaturesIds()).difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
self.setOutputValue(self.OUTPUT, filename)
def processAlgorithm(self, progress):
layerA = QGisLayers.getObjectFromUri(self.getParameterValue(Difference.INPUT))
layerB = QGisLayers.getObjectFromUri(self.getParameterValue(Difference.OVERLAY))
GEOS_EXCEPT = True
FEATURE_EXCEPT = True
writer = self.getOutputFromName(Difference.OUTPUT).getVectorWriter(layerA.pendingFields(),
layerA.dataProvider().geometryType(), layerA.dataProvider().crs())
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
index = utils.createSpatialIndex(layerB)
selectionA = QGisLayers.features(layerA)
current = 0
total = 100.0 / float(len(selectionA))
for inFeatA in selectionA:
add = True
geom = QgsGeometry(inFeatA.geometry())
diff_geom = QgsGeometry(geom)
attrs = inFeatA.attributes()
intersections = index.intersects(geom.boundingBox())
for i in intersections:
request = QgsFeatureRequest().setFilterFid(i)
inFeatB = layerB.getFeatures(request).next()
tmpGeom = QgsGeometry(inFeatB.geometry())
try:
if diff_geom.intersects(tmpGeom):
diff_geom = QgsGeometry(diff_geom.difference(tmpGeom))
except:
GEOS_EXCEPT = False
add = False
break
if add:
try:
outFeat.setGeometry(diff_geom)
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
except:
FEATURE_EXCEPT = False
continue
current += 1
progress.setPercentage(int(current * total))
del writer
if not GEOS_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Geometry exception while computing difference")
if not FEATURE_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Feature exception while computing difference")
def processAlgorithm(self, progress):
layer1 = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYER1))
layer2 = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYER2))
fields = []
layers = [layer1, layer2]
totalfeaturecount = 0
if (layer1.dataProvider().geometryType() != layer2.dataProvider().geometryType()):
raise GeoAlgorithmExecutionException("Merged layers must all be same type of geometry (" + \
mmqgisx_wkbtype_to_text(layer2.dataProvider().geometryType()) + " != " + \
mmqgisx_wkbtype_to_text(layer2.dataProvider().geometryType()) + ")")
for layer in layers:
totalfeaturecount += layer.featureCount()
# Add any fields not in the composite field list
for sfield in layer.pendingFields():
found = None
for dfield in fields:
if (dfield.name() == sfield.name()) and (dfield.type() == sfield.type()):
found = dfield
break
if not found:
fields.append(sfield)
output = self.getOutputFromName(self.SAVENAME)
out = output.getVectorWriter(fields, layer1.wkbType(), layer1.crs())
# Copy layer features to output file
featurecount = 0
for layer in layers:
idx = {}
for dfield in fields:
i = 0
for sfield in layer.pendingFields():
if (sfield.name() == dfield.name()) and (sfield.type() == dfield.type()):
idx[dfield] = i
break
i += 1
features = QGisLayers.features(layer)
for feature in features:
sattributes = feature.attributes()
dattributes = []
for dfield in fields:
if (dfield in idx):
dattributes.append(sattributes[idx[dfield]])
else:
dattributes.append(QVariant(dfield.type()))
feature.setAttributes(dattributes)
out.addFeature(feature)
featurecount += 1
progress.setPercentage(float(featurecount) / totalfeaturecount * 100)
del out
def processAlgorithm(self, progress):
hublayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.HUBNAME))
spokelayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.SPOKENAME))
hubattr = self.getParameterValue(self.HUBATTRIBUTE)
spokeattr = self.getParameterValue(self.SPOKEATTRIBUTE)
if hublayer == spokelayer:
raise GeoAlgorithmExecutionException ("Same layer given for both hubs and spokes")
hubindex = hublayer.dataProvider().fieldNameIndex(hubattr)
spokeindex = spokelayer.dataProvider().fieldNameIndex(spokeattr)
outfields = spokelayer.pendingFields()
output = self.getOutputFromName(self.SAVENAME)
out = output.getVectorWriter(outfields, QGis.WKBLineString, spokelayer.crs())
# Scan spoke points
linecount = 0
spokepoints = QGisLayers.features(spokelayer)
i = 0
for spokepoint in spokepoints:
i += 1
spokex = spokepoint.geometry().boundingBox().center().x()
spokey = spokepoint.geometry().boundingBox().center().y()
spokeid = unicode(spokepoint.attributeMap()[spokeindex].toString())
progress.setPercentage(float(i) / len(spokepoints) * 100)
# Scan hub points to find first matching hub
hubpoint = QgsFeature()
hublayer.dataProvider().select(hublayer.dataProvider().attributeIndexes())
hublayer.dataProvider().rewind()
hubpoints = QGisLayers.features(hublayer)
for hubpoint in hubpoints:
hubid = unicode(hubpoint.attributeMap()[hubindex].toString())
if hubid == spokeid:
hubx = hubpoint.geometry().boundingBox().center().x()
huby = hubpoint.geometry().boundingBox().center().y()
# Write line to the output file
outfeature = QgsFeature()
outfeature.setAttributes(spokepoint.attributes())
polyline = []
polyline.append(QgsPoint(spokex, spokey))
polyline.append(QgsPoint(hubx, huby))
geometry = QgsGeometry()
outfeature.setGeometry(geometry.fromPolyline(polyline))
out.addFeature(outfeature)
linecount = linecount + 1
break
del out
if linecount <= 0:
raise GeoAlgorithmExecutionException("No spoke/hub matches found to create lines")
def processAlgorithm(self, progress):
layer1 = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYER1))
layer2 = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYER2))
fields = []
layers = [layer1, layer2]
totalfeaturecount = 0
if (layer1.dataProvider().geometryType() != layer2.dataProvider().geometryType()):
raise GeoAlgorithmExecutionException("Merged layers must all be same type of geometry (" + \
mmqgisx_wkbtype_to_text(layer2.dataProvider().geometryType()) + " != " + \
mmqgisx_wkbtype_to_text(layer2.dataProvider().geometryType()) + ")")
for layer in layers:
totalfeaturecount += layer.featureCount()
# Add any fields not in the composite field list
for sfield in layer.pendingFields():
found = None
for dfield in fields:
if (dfield.name() == sfield.name()) and (dfield.type() == sfield.type()):
found = dfield
break
if not found:
fields.append(sfield)
output = self.getOutputFromName(self.SAVENAME)
out = output.getVectorWriter(fields, layer1.wkbType(), layer1.crs())
# Copy layer features to output file
featurecount = 0
for layer in layers:
idx = {}
for dfield in fields:
i = 0
for sfield in layer.pendingFields():
if (sfield.name() == dfield.name()) and (sfield.type() == dfield.type()):
idx[dfield] = i
break
i += 1
features = QGisLayers.features(layer)
for feature in features:
sattributes = feature.attributes()
dattributes = []
for dfield in fields:
if (dfield in idx):
dattributes.append(sattributes[idx[dfield]])
else:
dattributes.append(QVariant(dfield.type()))
feature.setAttributes(dattributes)
out.addFeature(feature)
featurecount += 1
progress.setPercentage(float(featurecount) / totalfeaturecount * 100)
del out
def processAlgorithm(self, progress):
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
fieldName = self.getParameterValue(self.FIELD)
classFieldName = self.getParameterValue(self.CLASSFIELD)
polyProvider = polyLayer.dataProvider()
classFieldIndex = pointLayer.fieldNameIndex(classFieldName)
idxCount, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), fieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList.toList(),
polyProvider.geometryType(), polyProvider.crs())
spatialIndex = utils.createSpatialIndex(pointLayer)
ftPoint = QgsFeature()
outFeat = QgsFeature()
geom = QgsGeometry()
current = 0
hasIntersections = False
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
for ftPoly in features:
geom = ftPoly.geometry()
attrs = ftPoly.attributes()
classes = []
hasIntersections = False
points = spatialIndex.intersects(geom.boundingBox())
if len(points) > 0:
hasIntersections = True
if hasIntersections:
for i in points:
request = QgsFeatureRequest().setFilterFid(i)
ftPoint = pointLayer.getFeatures(request).next()
tmpGeom = QgsGeometry(ftPoint.geometry())
if geom.contains(tmpGeom):
clazz = ftPoint.attributes()[classFieldIndex]
if not clazz in classes:
classes.append(clazz)
outFeat.setGeometry(geom)
if idxCount == len(attrs):
attrs.append(len(classes))
else:
attrs[idxCount] = len(classes)
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(current / total)
del writer
def processAlgorithm(self, progress):
filename = self.getParameterValue(self.INPUT)
inputLayer = QGisLayers.getObjectFromUri(filename)
method = self.getParameterValue(self.METHOD)
selection = self.getParameterValue(self.USE_SELECTED)
filename = self.getParameterValue(self.INTERSECT)
selectLayer = QGisLayers.getObjectFromUri(filename)
inputProvider = inputLayer.dataProvider()
selectProvider = selectLayer.dataProvider()
index = utils.createSpatialIndex(inputLayer)
inputProvider.select()
selectProvider.select()
feat = QgsFeature()
infeat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
if selection:
features = selectLayer.selectedFeatures()
total = 100.0 / float(len(features))
current = 0
for feat in features:
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for i in intersects:
inputProvider.featureAtId(i, infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
current += 1
progress.setPercentage(int(current * total))
else:
total = 100.0 / float(selectProvider.featureCount())
current = 0
while selectProvider.nextFeature(feat):
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for i in intersects:
inputProvider.featureAtId(i, infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
current += 1
progress.setPercentage(int(current * total))
if method == 1:
selectedSet = list(set(inputLayer.selectedFeaturesIds()).union(selectedSet))
elif method == 2:
selectedSet = list(set(inputLayer.selectedFeaturesIds()).difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
self.setOutputValue(self.OUTPUT, filename)
def processAlgorithm(self, progress):
vlayerA = QGisLayers.getObjectFromUri(self.getParameterValue(Difference.INPUT))
vlayerB = QGisLayers.getObjectFromUri(self.getParameterValue(Difference.INPUT2))
GEOS_EXCEPT = True
FEATURE_EXCEPT = True
vproviderA = vlayerA.dataProvider()
vproviderB = vlayerB.dataProvider()
fields = vproviderA.fields()
# check for crs compatibility
crsA = vproviderA.crs()
crsB = vproviderB.crs()
if not crsA.isValid() or not crsB.isValid():
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Difference. Invalid CRS. Results might be unexpected")
else:
if crsA != crsB:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Difference. Non-matching CRSs. Results might be unexpected")
writer = self.getOutputFromName(Difference.OUTPUT).getVectorWriter(fields, vproviderA.geometryType(), vproviderA.crs() )
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
index = utils.createSpatialIndex(vlayerB)
nElement = 0
selectionA = QGisLayers.features(vlayerA)
nFeat = len(selectionA)
for inFeatA in selectionA:
nElement += 1
progress.setPercentage(nElement/float(nFeat) * 100)
add = True
geom = QgsGeometry( inFeatA.geometry() )
diff_geom = QgsGeometry( geom )
atMap = inFeatA.attributes()
intersects = index.intersects( geom.boundingBox() )
for id in intersects:
vlayerB.featureAtId( int( id ), inFeatB , True)
tmpGeom = QgsGeometry( inFeatB.geometry() )
try:
if diff_geom.intersects( tmpGeom ):
diff_geom = QgsGeometry( diff_geom.difference( tmpGeom ) )
except:
GEOS_EXCEPT = False
add = False
break
if add:
try:
outFeat.setGeometry( diff_geom )
outFeat.setAttributes( atMap )
writer.addFeature( outFeat )
except:
FEATURE_EXCEPT = False
continue
del writer
if not GEOS_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Geometry exception while computing difference")
if not FEATURE_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Feature exception while computing difference")
def processAlgorithm(self, progress):
inField = self.getParameterValue(SumLines.FIELD)
lineLayer = QGisLayers.getObjectFromUri(self.getParameterValue(SumLines.LINES))
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(SumLines.POLYGONS))
polyProvider = polyLayer.dataProvider()
lineProvider = lineLayer.dataProvider()
if polyProvider.crs() <> lineProvider.crs():
SextanteLog.addToLog(SextanteLog.LOG_WARNING,
"CRS warning!Warning: Input layers have non-matching CRS.\nThis may cause unexpected results.")
allAttrs = polyProvider.attributeIndexes()
polyProvider.select(allAttrs)
allAttrs = lineProvider.attributeIndexes()
lineProvider.select(allAttrs)
fieldList = ftools_utils.getFieldList(polyLayer)
index = polyProvider.fieldNameIndex(unicode(inField))
if index == -1:
index = polyProvider.fieldCount()
field = QgsField(unicode(inField), QVariant.Double, "real", 24, 15, self.tr("length field"))
fieldList[index] = field
sRs = polyProvider.crs()
inFeat = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
outGeom = QgsGeometry()
distArea = QgsDistanceArea()
lineProvider.rewind()
start = 15.00
add = 85.00 / polyProvider.featureCount()
writer = self.getOutputFromName(SumLines.OUTPUT).getVectorWriter(fieldList, polyProvider.geometryType(), sRs)
spatialIndex = ftools_utils.createIndex( lineProvider )
while polyProvider.nextFeature(inFeat):
inGeom = QgsGeometry(inFeat.geometry())
atMap = inFeat.attributeMap()
lineList = []
length = 0
#(check, lineList) = lineLayer.featuresInRectangle(inGeom.boundingBox(), True, False)
#lineLayer.select(inGeom.boundingBox(), False)
#lineList = lineLayer.selectedFeatures()
lineList = spatialIndex.intersects(inGeom.boundingBox())
if len(lineList) > 0: check = 0
else: check = 1
if check == 0:
for i in lineList:
lineProvider.featureAtId( int( i ), inFeatB , True, allAttrs )
tmpGeom = QgsGeometry( inFeatB.geometry() )
if inGeom.intersects(tmpGeom):
outGeom = inGeom.intersection(tmpGeom)
length = length + distArea.measure(outGeom)
outFeat.setGeometry(inGeom)
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(index, QVariant(length))
writer.addFeature(outFeat)
start = start + add
progress.setPercentage(start)
del writer
def processAlgorithm(self, progress):
input = self.getParameterValue(self.INPUT_LAYER)
input2 = self.getParameterValue(self.INPUT_LAYER_2)
output = self.getOutputFromName(self.OUTPUT_LAYER)
field = self.getParameterValue(self.TABLE_FIELD)
field2 = self.getParameterValue(self.TABLE_FIELD_2)
# Layer 1
layer = QGisLayers.getObjectFromUri(input)
provider = layer.dataProvider()
allAttrs = provider.attributeIndexes()
provider.select(allAttrs)
join_field1_index = provider.fieldNameIndex(field)
# Layer 2
layer2 = QGisLayers.getObjectFromUri(input2)
provider2 = layer2.dataProvider()
allAttrs = provider2.attributeIndexes()
provider2.select(allAttrs)
fields2 = provider2.fields()
join_field2_index = provider2.fieldNameIndex(field2)
# Output
outFields = provider.fields()
for (i, f) in fields2.iteritems():
f.setName("x_" + f.name())
outFields[len(outFields)] = f
writer = output.getVectorWriter(outFields, provider.geometryType(),
provider.crs())
inFeat = QgsFeature()
inFeat2 = QgsFeature()
outFeat = QgsFeature()
# Create output vector layer with additional attribute
while provider.nextFeature(inFeat):
inGeom = inFeat.geometry()
atMap = inFeat.attributeMap()
join_value1 = atMap[join_field1_index].toString()
provider2.rewind()
while provider2.nextFeature(inFeat2):
atMap2 = inFeat2.attributeMap()
join_value2 = atMap2[join_field2_index].toString()
if join_value1 == join_value2:
# create the new feature
outFeat.setGeometry(inGeom)
outFeat.setAttributeMap(atMap)
l = len(provider.fields())
for (i, a) in atMap2.iteritems():
outFeat.addAttribute(l + i, a)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress):
inField = self.getParameterValue(PointsInPolygon.FIELD)
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(PointsInPolygon.POLYGONS))
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(PointsInPolygon.POINTS))
polyProvider = polyLayer.dataProvider()
pointProvider = pointLayer.dataProvider()
if polyProvider.crs() <> pointProvider.crs():
SextanteLog.addToLog(SextanteLog.LOG_WARNING,
"CRS warning!Warning: Input layers have non-matching CRS.\nThis may cause unexpected results.")
allAttrs = polyProvider.attributeIndexes()
polyProvider.select(allAttrs)
allAttrs = pointProvider.attributeIndexes()
pointProvider.select(allAttrs)
fieldList = ftools_utils.getFieldList(polyLayer)
index = polyProvider.fieldNameIndex(unicode(inField))
if index == -1:
index = polyProvider.fieldCount()
field = QgsField(unicode(inField), QVariant.Double, "real", 24, 15, "point count field")
fieldList[index] = field
sRs = polyProvider.crs()
writer = self.getOutputFromName(PointsInPolygon.OUTPUT).getVectorWriter(fieldList, polyProvider.geometryType(), sRs)
inFeat = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
start = 15.00
add = 85.00 / polyProvider.featureCount()
spatialIndex = ftools_utils.createIndex( pointProvider )
while polyProvider.nextFeature(inFeat):
inGeom = inFeat.geometry()
atMap = inFeat.attributeMap()
outFeat.setAttributeMap(atMap)
outFeat.setGeometry(inGeom)
pointList = []
count = 0
#(check, pointList) = pointLayer.featuresInRectangle(inGeom.boundingBox(), True, True)
#pointLayer.select(inGeom.boundingBox(), False)
#pointList = pointLayer.selectedFeatures()
pointList = spatialIndex.intersects(inGeom.boundingBox())
if len(pointList) > 0: check = 0
else: check = 1
if check == 0:
for i in pointList:
pointProvider.featureAtId( int( i ), inFeatB , True, allAttrs )
tmpGeom = QgsGeometry( inFeatB.geometry() )
if inGeom.contains(tmpGeom):
count = count + 1
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(index, QVariant(count))
writer.addFeature(outFeat)
start = start + add
progress.setPercentage(start)
del writer
def processAlgorithm(self, progress):
input = self.getParameterValue(self.INPUT_LAYER)
input2 = self.getParameterValue(self.INPUT_LAYER_2)
output = self.getOutputFromName(self.OUTPUT_LAYER)
field = self.getParameterValue(self.TABLE_FIELD)
field2 = self.getParameterValue(self.TABLE_FIELD_2)
# Layer 1
layer = QGisLayers.getObjectFromUri(input)
provider = layer.dataProvider()
allAttrs = provider.attributeIndexes()
provider.select(allAttrs)
join_field1_index = provider.fieldNameIndex(field)
# Layer 2
layer2 = QGisLayers.getObjectFromUri(input2)
provider2 = layer2.dataProvider()
allAttrs = provider2.attributeIndexes()
provider2.select(allAttrs)
fields2 = provider2.fields()
join_field2_index = provider2.fieldNameIndex(field2)
# Output
outFields = provider.fields()
for (i, f) in fields2.iteritems():
f.setName("x_" + f.name())
outFields[len(outFields)] = f
writer = output.getVectorWriter(outFields, provider.geometryType(), provider.crs())
inFeat = QgsFeature()
inFeat2 = QgsFeature()
outFeat = QgsFeature()
# Create output vector layer with additional attribute
while provider.nextFeature(inFeat):
inGeom = inFeat.geometry()
atMap = inFeat.attributeMap()
join_value1 = atMap[join_field1_index].toString()
provider2.rewind()
while provider2.nextFeature(inFeat2):
atMap2 = inFeat2.attributeMap()
join_value2 = atMap2[join_field2_index].toString()
if join_value1 == join_value2:
# create the new feature
outFeat.setGeometry(inGeom)
outFeat.setAttributeMap(atMap)
l = len(provider.fields())
for (i, a) in atMap2.iteritems():
outFeat.addAttribute(l + i, a)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress):
vlayer = QGisLayers.getObjectFromUri(self.getParameterValue(FixedDistanceBuffer.INPUT))
vprovider = vlayer.dataProvider()
allAttrs = vprovider.attributeIndexes()
vprovider.select(allAttrs)
writer = self.getOutputFromName(FixedDistanceBuffer.OUTPUT).getVectorWriter(vprovider.fields(), QGis.WKBPolygon, vprovider.crs() )
useSelection = self.getParameterValue(FixedDistanceBuffer.USE_SELECTED)
distance = self.getParameterValue(FixedDistanceBuffer.DISTANCE)
dissolve = self.getParameterValue(FixedDistanceBuffer.DISSOLVE)
segments = int(self.getParameterValue(FixedDistanceBuffer.SEGMENTS))
layer = QGisLayers.getObjectFromUri(self.getParameterValue(FixedDistanceBuffer.INPUT))
buff.buffering(progress, writer, distance, None, useSelection, False, layer, dissolve, segments)
def processAlgorithm(self, progress):
method = self.getParameterValue(self.METHOD)
selection = self.getParameterValue(self.USE_SELECTED)
filename = self.getParameterValue(SelectByLocation.INPUT)
inputLayer = QGisLayers.getObjectFromUri(filename)
filename = self.getParameterValue(SelectByLocation.INTERSECT)
selectLayer = QGisLayers.getObjectFromUri(filename)
inputProvider = inputLayer.dataProvider()
allAttrs = inputProvider.attributeIndexes()
inputProvider.select(allAttrs, QgsRectangle())
selectProvider = selectLayer.dataProvider()
allAttrs = selectProvider.attributeIndexes()
selectProvider.select(allAttrs, QgsRectangle())
feat = QgsFeature()
infeat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
index = ftools_utils.createIndex(inputProvider)
if selection:
features = selectLayer.selectedFeatures()
featurescount = len(features)
i = 0
for feat in features:
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for id in intersects:
inputProvider.featureAtId(int(id), infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
i += 1
progress.setPercentage(i / featurescount * 100)
else:
featurescount = selectProvider.featureCount()
while selectProvider.nextFeature(feat):
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
i = 0
for iid in intersects:
inputProvider.featureAtId(int(iid), infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
i += 1
progress.setPercentage(i / featurescount * 100)
if method == 1:
selectedSet = list(
set(inputLayer.selectedFeaturesIds()).union(selectedSet))
elif method == 2:
selectedSet = list(
set(inputLayer.selectedFeaturesIds()).difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
self.setOutputValue(self.OUTPUT, filename)
def processAlgorithm(self, progress):
method = self.getParameterValue(self.METHOD)
selection = self.getParameterValue(self.USE_SELECTED)
filename = self.getParameterValue(SelectByLocation.INPUT)
inputLayer = QGisLayers.getObjectFromUri(filename)
filename = self.getParameterValue(SelectByLocation.INTERSECT)
selectLayer = QGisLayers.getObjectFromUri(filename)
inputProvider = inputLayer.dataProvider()
allAttrs = inputProvider.attributeIndexes()
inputProvider.select(allAttrs, QgsRectangle())
selectProvider = selectLayer.dataProvider()
allAttrs = selectProvider.attributeIndexes()
selectProvider.select(allAttrs, QgsRectangle())
feat = QgsFeature()
infeat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
index = ftools_utils.createIndex(inputProvider)
if selection:
features = selectLayer.selectedFeatures()
featurescount = len(features)
i = 0
for feat in features:
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for id in intersects:
inputProvider.featureAtId(int(id), infeat, True)
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
i += 1
progress.setPercentage(i/featurescount * 100)
else:
featurescount = selectProvider.featureCount()
while selectProvider.nextFeature(feat):
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
i = 0
for iid in intersects:
inputProvider.featureAtId(int(iid), infeat, True)
tmpGeom = QgsGeometry( infeat.geometry() )
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
i += 1
progress.setPercentage(i/featurescount * 100)
if method == 1:
selectedSet = list(set(inputLayer.selectedFeaturesIds()).union(selectedSet))
elif method == 2:
selectedSet = list(set(inputLayer.selectedFeaturesIds()).difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
self.setOutputValue(self.OUTPUT, filename)
def processAlgorithm(self, progress): # Include must be done here to avoid cyclic import from sextante.core.Sextante import Sextante qgis = Sextante.getInterface() layer1 = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYER1)) layer2 = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYER2)) savename = self.getOutputValue(self.SAVENAME) message = mmqgisx_merge(qgis, [ layer1, layer2 ], savename, False) if message: raise GeoAlgorithmExecutionException(message)
def processAlgorithm(self, progress):
input = self.getParameterValue(self.INPUT_LAYER)
input2 = self.getParameterValue(self.INPUT_LAYER_2)
output = self.getOutputFromName(self.OUTPUT_LAYER)
field = self.getParameterValue(self.TABLE_FIELD)
field2 = self.getParameterValue(self.TABLE_FIELD_2)
# Layer 1
layer = QGisLayers.getObjectFromUri(input)
provider = layer.dataProvider()
joinField1Index = layer.fieldNameIndex(field)
# Layer 2
layer2 = QGisLayers.getObjectFromUri(input2)
provider2 = layer2.dataProvider()
joinField2Index = layer2.fieldNameIndex(field2)
# Output
outFields = []
outFields.extend(provider.fields())
outFields.extend(provider2.fields())
writer = output.getVectorWriter(outFields, provider.geometryType(),
layer.crs())
inFeat = QgsFeature()
inFeat2 = QgsFeature()
outFeat = QgsFeature()
# Create output vector layer with additional attribute
features = QGisLayers.features(layer)
for inFeat in features:
inGeom = inFeat.geometry()
attrs = inFeat.attributes()
joinValue1 = attrs[joinField1Index].toString()
features2 = QGisLayers.features(layer2)
for inFeat2 in features2:
## Maybe it should cache this entries...
attrs2 = inFeat2.attributes()
joinValue2 = attrs2[joinField2Index].toString()
if joinValue1 == joinValue2:
# create the new feature
outFeat.setGeometry(inGeom)
attrs.extend(attrs2)
break
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress):
input = self.getParameterValue(self.INPUT_LAYER)
input2 = self.getParameterValue(self.INPUT_LAYER_2)
output = self.getOutputFromName(self.OUTPUT_LAYER)
field = self.getParameterValue(self.TABLE_FIELD)
field2 = self.getParameterValue(self.TABLE_FIELD_2)
# Layer 1
layer = QGisLayers.getObjectFromUri(input)
provider = layer.dataProvider()
joinField1Index = layer.fieldNameIndex(field)
# Layer 2
layer2 = QGisLayers.getObjectFromUri(input2)
provider2 = layer2.dataProvider()
joinField2Index = layer2.fieldNameIndex(field2)
# Output
outFields = []
outFields.extend(provider.fields())
outFields.extend(provider2.fields())
writer = output.getVectorWriter(outFields, provider.geometryType(), layer.crs())
inFeat = QgsFeature()
inFeat2 = QgsFeature()
outFeat = QgsFeature()
# Create output vector layer with additional attribute
features = QGisLayers.features(layer);
for inFeat in features:
inGeom = inFeat.geometry()
attrs = inFeat.attributes()
joinValue1 = attrs[joinField1Index]
features2 = QGisLayers.features(layer2);
for inFeat2 in features2:
## Maybe it should cache this entries...
attrs2 = inFeat2.attributes()
joinValue2 = attrs2[joinField2Index]
if joinValue1 == joinValue2:
# create the new feature
outFeat.setGeometry(inGeom)
attrs.extend(attrs2)
break;
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress): layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYERNAME)) idx = layer.fieldNameIndex(self.getParameterValue(self.COLUMN)) output = self.getOutputFromName(self.SAVENAME) fields = layer.pendingFields() newFields = [] i = 0 for field in fields: if i != idx: newFields.append(field) i += 1 outfile = output.getVectorWriter(newFields, layer.wkbType(), layer.crs() ) features = QGisLayers.features(layer) featurecount = len(features) i = 0 outFeat = QgsFeature() for feature in features: progress.setPercentage(float(i) /featurecount * 100) i += 1 outFeat.setGeometry(feature.geometry()) attributes = feature.attributes() newAttributes = [] i = 0 for attr in attributes: if i != idx: newAttributes.append(attr) i += 1 feature.setAttributes(newAttributes) outfile.addFeature(feature)
def processAlgorithm(self, progress):
uri = self.getParameterValue(self.INPUT)
layer = QGisLayers.getObjectFromUri(uri)
outputplot = self.getOutputValue(self.PLOT)
outputtable = self.getOutputFromName(self.TABLE)
values = raster.scanraster(layer, progress)
nbins = self.getParameterValue(self.BINS)
#ALERT:this is potentially blocking if the layer is too big
plt.close()
valueslist = []
for v in values:
if v is not None:
valueslist.append(v)
n, bins, values = plt.hist(valueslist, nbins)
fields = [
QgsField("CENTER_VALUE", QVariant.Double),
QgsField("NUM_ELEM", QVariant.Double)
]
writer = outputtable.getTableWriter(fields)
for i in xrange(len(values)):
writer.addRecord([str(bins[i]) + "-" + str(bins[i + 1]), n[i]])
plotFilename = outputplot + ".png"
lab.savefig(plotFilename)
f = open(outputplot, "w")
f.write("<img src=\"" + plotFilename + "\"/>")
f.close()
def processAlgorithm(self, progress):
fieldtype = self.getParameterValue(self.FIELD_TYPE)
fieldname = self.getParameterValue(self.FIELD_NAME)
output = self.getOutputFromName(self.OUTPUT_LAYER)
vlayer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
vprovider = vlayer.dataProvider()
allAttrs = vprovider.attributeIndexes()
vprovider.select(allAttrs)
fields = vprovider.fields()
fields[len(fields)] = QgsField(fieldname, self.TYPES[fieldtype])
writer = output.getVectorWriter(fields, vprovider.geometryType(),
vprovider.crs())
inFeat = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
nFeat = vprovider.featureCount()
nElement = 0
while vprovider.nextFeature(inFeat):
progress.setPercentage(int((100 * nElement) / nFeat))
nElement += 1
inGeom = inFeat.geometry()
outFeat.setGeometry(inGeom)
atMap = inFeat.attributeMap()
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(len(vprovider.fields()), QVariant())
writer.addFeature(outFeat)
del writer
def test_SagaVectorAlgorithWithUnsupportedInputAndOutputFormat(self):
'''this tests both the exporting to shp and then the format change in the output layer'''
layer = sextante.getobject(polygonsGeoJson());
feature = layer.getFeatures().next()
selected = [feature.id()]
layer.setSelectedFeatures(selected)
outputs=sextante.runalg("saga:polygoncentroids",polygonsGeoJson(),True, SextanteUtils.getTempFilename("geojson"))
layer.setSelectedFeatures([])
output=outputs['CENTROIDS']
layer=QGisLayers.getObjectFromUri(output, True)
fields=layer.pendingFields()
expectednames=['ID','POLY_NUM_A','POLY_ST_A']
expectedtypes=['Real','Real','String']
names=[str(f.name()) for f in fields]
types=[str(f.typeName()) for f in fields]
self.assertEqual(expectednames, names)
self.assertEqual(expectedtypes, types)
features=sextante.getfeatures(layer)
self.assertEqual(1, len(features))
feature=features.next()
attrs=feature.attributes()
expectedvalues=["0","1.1","string a"]
values=[str(attr.toString()) for attr in attrs]
self.assertEqual(expectedvalues, values)
wkt='POINT(270787.49991451 4458955.46775295)'
self.assertEqual(wkt, str(feature.geometry().exportToWkt()))
def processAlgorithm(self, progress):
uri = self.getParameterValue(self.LAYER)
layer = QGisLayers.getObjectFromUri(uri);
self.setOutputValue(self.XMIN, layer.extent().xMinimum())
self.setOutputValue(self.XMAX, layer.extent().xMaximum())
self.setOutputValue(self.YMIN, layer.extent().yMinimum())
self.setOutputValue(self.YMAX, layer.extent().yMaximum())
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
crsId = self.getParameterValue(self.TARGET_CRS)
targetCrs = QgsCoordinateReferenceSystem(int(crsId))
output = self.getOutputValue(self.OUTPUT)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
layer.pendingFields(), layer.wkbType(), targetCrs)
layer.select(layer.pendingAllAttributesList())
current = 0
total = 100.0 / float(layer.featureCount())
layerCrs = layer.crs()
crsTransform = QgsCoordinateTransform(layerCrs, targetCrs)
f = QgsFeature()
outFeat = QgsFeature()
while layer.nextFeature(f):
geom = f.geometry()
geom.transform(crsTransform)
outFeat.setGeometry(geom)
outFeat.setAttributeMap(f.attributeMap())
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
fieldType = self.getParameterValue(self.FIELD_TYPE)
fieldName = self.getParameterValue(self.FIELD_NAME)
fieldLength = self.getParameterValue(self.FIELD_LENGTH)
fieldPrecision = self.getParameterValue(self.FIELD_PRECISION)
output = self.getOutputFromName(self.OUTPUT_LAYER)
layer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
provider = layer.dataProvider()
fields = provider.fields()
fields.append(
QgsField(fieldName, self.TYPES[fieldType], "", fieldLength,
fieldPrecision))
writer = output.getVectorWriter(fields, provider.geometryType(),
layer.crs())
outFeat = QgsFeature()
inGeom = QgsGeometry()
nElement = 0
features = QGisLayers.features(layer)
nFeat = len(features)
for inFeat in features:
progress.setPercentage(int((100 * nElement) / nFeat))
nElement += 1
inGeom = inFeat.geometry()
outFeat.setGeometry(inGeom)
atMap = inFeat.attributes()
atMap.append(None)
outFeat.setAttributes(atMap)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
useSelection = self.getParameterValue(self.USE_SELECTION)
byFeature = self.getParameterValue(self.BY_FEATURE)
output = self.getOutputValue(self.OUTPUT)
fields = {0 : QgsField("MINX", QVariant.Double),
1 : QgsField("MINY", QVariant.Double),
2 : QgsField("MAXX", QVariant.Double),
3 : QgsField("MAXY", QVariant.Double),
4 : QgsField("CNTX", QVariant.Double),
5 : QgsField("CNTY", QVariant.Double),
6 : QgsField("AREA", QVariant.Double),
7 : QgsField("PERIM", QVariant.Double),
8 : QgsField("HEIGHT", QVariant.Double),
9 : QgsField("WIDTH", QVariant.Double)
}
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fields,
QGis.WKBPolygon, layer.crs())
if byFeature:
self.featureExtent(layer, writer, useSelection, progress)
else:
self.layerExtent(layer, writer, progress)
del writer
def processAlgorithm(self, progress):
fieldname = self.getParameterValue(self.FIELD)
output = self.getOutputFromName(self.OUTPUT)
vlayer = QGisLayers.getObjectFromUri(self.getParameterValue(
self.INPUT))
vprovider = vlayer.dataProvider()
fieldindex = vlayer.fieldNameIndex(fieldname)
fields = vprovider.fields()
fields.append(QgsField("NUM_FIELD", QVariant.Int))
writer = output.getVectorWriter(fields, vprovider.geometryType(),
vlayer.crs())
outFeat = QgsFeature()
inGeom = QgsGeometry()
nElement = 0
classes = {}
features = QGisLayers.features(vlayer)
nFeat = len(features)
for feature in features:
progress.setPercentage(int((100 * nElement) / nFeat))
nElement += 1
inGeom = feature.geometry()
outFeat.setGeometry(inGeom)
atMap = feature.attributes()
clazz = atMap[fieldindex]
if clazz not in classes:
classes[clazz] = len(classes.keys())
atMap.append(classes[clazz])
outFeat.setAttributes(atMap)
writer.addFeature(outFeat)
del writer
def test_SagaVectorAlgorithmWithSelection(self):
layer = sextante.getobject(polygons2())
feature = layer.getFeatures().next()
selected = [feature.id()]
layer.setSelectedFeatures(selected)
outputs = sextante.runalg("saga:polygoncentroids", polygons2(), True,
None)
layer.setSelectedFeatures([])
output = outputs['CENTROIDS']
layer = QGisLayers.getObjectFromUri(output, True)
fields = layer.pendingFields()
expectednames = ['ID', 'POLY_NUM_B', 'POLY_ST_B']
expectedtypes = ['Real', 'Real', 'String']
names = [str(f.name()) for f in fields]
types = [str(f.typeName()) for f in fields]
self.assertEqual(expectednames, names)
self.assertEqual(expectedtypes, types)
features = sextante.getfeatures(layer)
self.assertEqual(1, len(features))
feature = features.next()
attrs = feature.attributes()
expectedvalues = ["2", "1", "string a"]
values = [str(attr.toString()) for attr in attrs]
self.assertEqual(expectedvalues, values)
wkt = 'POINT(270806.69221918 4458924.97720492)'
self.assertEqual(wkt, str(feature.geometry().exportToWkt()))
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
layer.pendingFields().toList(), QGis.WKBPolygon, layer.crs())
outFeat = QgsFeature()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for f in features:
outGeomList = []
if f.geometry().isMultipart():
outGeomList = f.geometry().asMultiPolyline()
else:
outGeomList.append(f.geometry().asPolyline())
polyGeom = self.removeBadLines(outGeomList)
if len(polyGeom) <> 0:
outFeat.setGeometry(QgsGeometry.fromPolygon(polyGeom))
attrs = f.attributes()
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
interval = self.getParameterValue(self.INTERVAL)
isPolygon = layer.geometryType() == QGis.Polygon
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
layer.wkbType(), layer.crs())
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
current = 0
for f in features:
featGeometry = QgsGeometry(f.geometry())
attrMap = f.attributes()
newGeometry = self.densifyGeometry(featGeometry, interval, isPolygon)
feature = QgsFeature()
feature.setGeometry(newGeometry)
feature.setAttributes(attrMap)
writer.addFeature(feature)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
writer = self.getOutputFromName(self.OUTPUT_LAYER).getVectorWriter(
layer.pendingFields().toList(), QGis.WKBPoint, layer.crs())
outFeat = QgsFeature()
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
current = 0
for inFeat in features:
inGeom = inFeat.geometry()
attrs = inFeat.attributes()
outGeom = QgsGeometry(inGeom.centroid())
if outGeom is None:
raise GeoAlgorithmExecutionException(
"Error calculating centroid")
outFeat.setGeometry(outGeom)
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def test_SagaVectorAlgorithmWithSelection(self):
layer = sextante.getobject(polygons2());
feature = layer.getFeatures().next()
selected = [feature.id()]
layer.setSelectedFeatures(selected)
outputs=sextante.runalg("saga:polygoncentroids",polygons2(),True,None)
layer.setSelectedFeatures([])
output=outputs['CENTROIDS']
layer=QGisLayers.getObjectFromUri(output, True)
fields=layer.pendingFields()
expectednames=['ID','POLY_NUM_B','POLY_ST_B']
expectedtypes=['Real','Real','String']
names=[str(f.name()) for f in fields]
types=[str(f.typeName()) for f in fields]
self.assertEqual(expectednames, names)
self.assertEqual(expectedtypes, types)
features=sextante.getfeatures(layer)
self.assertEqual(1, len(features))
feature=features.next()
attrs=feature.attributes()
expectedvalues=["2","1","string a"]
values=[str(attr.toString()) for attr in attrs]
self.assertEqual(expectedvalues, values)
wkt='POINT(270806.69221918 4458924.97720492)'
self.assertEqual(wkt, str(feature.geometry().exportToWkt()))
def processAlgorithm(self, progress):
'''Here is where the processing itself takes place'''
# the first thing to do is retrieve the values of the parameters
# entered by the user
inputFilename = self.getParameterValue(self.INPUT_LAYER)
output = self.getOutputValue(self.OUTPUT_LAYER)
# input layers vales are always a string with its location.
# That string can be converted into a QGIS object (a QgsVectorLayer in
# this case) using the Sextante.getObjectFromUri() method.
vectorLayer = QGisLayers.getObjectFromUri(inputFilename)
# And now we can process
# First we create the output layer. The output value entered by the user
# is a string containing a filename, so we can use it directly
settings = QSettings()
systemEncoding = settings.value("/UI/encoding", "System")
provider = vectorLayer.dataProvider()
writer = QgsVectorFileWriter(output, systemEncoding, provider.fields(),
provider.geometryType(), provider.crs())
# Now we take the features from input layer and add them to the output.
# Method features() returns an iterator, considiring the selection that
# might exisist in layer and SEXTANTE configuration that indicates
# should algorithm use only selected features or all of them
features = QGisLayers.features(vectorLayer)
for f in features:
writer.addFeature(f)
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
crsId = self.getParameterValue(self.TARGET_CRS)
targetCrs = QgsCoordinateReferenceSystem(crsId)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
layer.wkbType(), targetCrs)
layer.select(layer.pendingAllAttributesList())
layerCrs = layer.crs()
crsTransform = QgsCoordinateTransform(layerCrs, targetCrs)
outFeat = QgsFeature()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for f in features:
geom = f.geometry()
geom.transform(crsTransform)
outFeat.setGeometry(geom)
outFeat.setAttributeMap(f.attributeMap())
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def test_SagaVectorAlgorithWithUnsupportedInputAndOutputFormat(self):
'''this tests both the exporting to shp and then the format change in the output layer'''
layer = sextante.getobject(polygonsGeoJson())
feature = layer.getFeatures().next()
selected = [feature.id()]
layer.setSelectedFeatures(selected)
outputs = sextante.runalg("saga:polygoncentroids",
polygonsGeoJson(), True,
SextanteUtils.getTempFilename("geojson"))
layer.setSelectedFeatures([])
output = outputs['CENTROIDS']
layer = QGisLayers.getObjectFromUri(output, True)
fields = layer.pendingFields()
expectednames = ['ID', 'POLY_NUM_A', 'POLY_ST_A']
expectedtypes = ['Real', 'Real', 'String']
names = [str(f.name()) for f in fields]
types = [str(f.typeName()) for f in fields]
self.assertEqual(expectednames, names)
self.assertEqual(expectedtypes, types)
features = sextante.getfeatures(layer)
self.assertEqual(1, len(features))
feature = features.next()
attrs = feature.attributes()
expectedvalues = ["0", "1.1", "string a"]
values = [str(attr.toString()) for attr in attrs]
self.assertEqual(expectedvalues, values)
wkt = 'POINT(270787.49991451 4458955.46775295)'
self.assertEqual(wkt, str(feature.geometry().exportToWkt()))
