def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYERNAME))
attribute = self.getParameterValue(self.ATTRIBUTE)
idx = layer.fieldNameIndex(attribute)
fields = layer.pendingFields()
fields[idx] = QgsField(fields[idx].name(), QVariant.Double)
output = self.getOutputFromName(self.SAVENAME)
out = output.getVectorWriter(fields, layer.wkbType(), layer.crs())
i = 0
features = QGisLayers.features(layer)
featurecount = len(features)
for feature in features:
i+=1
progress.setPercentage(float(i) / featurecount * 100)
attributes = feature.attributes()
try:
v = unicode(attributes[idx].toString())
if '%' in v:
v = v.replace('%', "")
attributes[idx] = float(attributes[idx]) / float(100)
else:
attributes[idx] = float(attributes[idx])
except:
attributes[idx] = QVariant()
feature.setAttributes(attributes)
out.addFeature(feature)
del out
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields().toList(),
QGis.WKBLineString, layer.crs())
outFeat = QgsFeature()
inGeom = QgsGeometry()
outGeom = QgsGeometry()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for f in features:
inGeom = f.geometry()
attrs = f.attributes()
lineList = self.extractAsLine(inGeom)
outFeat.setAttributes(attrs)
for h in lineList:
outFeat.setGeometry(outGeom.fromPolyline(h))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
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 processAlgorithm(self, progress):
fieldname = self.getParameterValue(self.FIELD_NAME)
formula = self.getParameterValue(self.FORMULA)
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, QVariant.Double)
writer = output.getVectorWriter(fields, vprovider.geometryType(), vprovider.crs())
outFeat = QgsFeature()
inGeom = QgsGeometry()
nFeat = vprovider.featureCount()
nElement = 0
features = QGisLayers.features(vlayer)
for inFeat in features:
progress.setPercentage(int((100 * nElement) / nFeat))
attrs = inFeat.attributeMap()
expression = formula
for (k, attr) in attrs.iteritems():
expression = expression.replace(str(fields[k].name()), str(attr.toString()))
try:
result = eval(expression)
except Exception:
raise GeoAlgorithmExecutionException("Problem evaluation formula: Wrong field values or formula")
nElement += 1
inGeom = inFeat.geometry()
outFeat.setGeometry(inGeom)
atMap = inFeat.attributeMap()
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(len(vprovider.fields()), QVariant(result))
writer.addFeature(outFeat)
del writer
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 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):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
tolerance = self.getParameterValue(self.TOLERANCE)
pointsBefore = 0
pointsAfter = 0
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
layer.pendingFields().toList(), layer.wkbType(), layer.crs())
current = 0
selection = QGisLayers.features(layer)
total = 100.0 / float(len(selection))
for f in selection:
featGeometry = QgsGeometry(f.geometry())
attrs = f.attributes()
pointsBefore += self.geomVertexCount(featGeometry)
newGeometry = featGeometry.simplify(tolerance)
pointsAfter += self.geomVertexCount(newGeometry)
feature = QgsFeature()
feature.setGeometry(newGeometry)
feature.setAttributes(attrs)
writer.addFeature(feature)
current += 1
progress.setPercentage(int(current * total))
del writer
SextanteLog.addToLog(
SextanteLog.LOG_INFO,
"Simplify: Input geometries have been simplified from" +
str(pointsBefore) + " to " + str(pointsAfter) + " points.")
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
provider = layer.dataProvider()
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
layer.pendingFields(), QGis.WKBPoint, provider.crs()
)
outFeat = QgsFeature()
inGeom = QgsGeometry()
outGeom = QgsGeometry()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for inFeat in features:
inGeom = inFeat.geometry()
atMap = inFeat.attributes()
points = utils.extractPoints(inGeom)
outFeat.setAttributes(atMap)
for i in points:
outFeat.setGeometry(outGeom.fromPoint(i))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
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):
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):
'''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.getOutputFromName(self.OUTPUT_LAYER)
#input layers values are always a string with its location.
#That string can be converted into a QGIS object (a QgsVectorLayer in this case))
#using the Sextante.getObject() method
vectorLayer = QGisLayers.getObjectFromUri(inputFilename)
#And now we can process
#First we create the output layer.
#To do so, we call the getVectorWriter method in the Output object.
#That will give as a SextanteVectorWriter, that we can later use to add features.
provider = vectorLayer.dataProvider()
writer = output.getVectorWriter( provider.fields(), provider.geometryType(), provider.crs() )
#Now we take the selected features and add them to the output layer
features = QGisLayers.features(vectorLayer)
total = len(features)
i = 0
for feat in features:
writer.addFeature(feat)
progress.setPercentage(100 * i / float(total))
i += 1
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
valuesFieldName = self.getParameterValue(self.VALUES_FIELD_NAME)
categoriesFieldName = self.getParameterValue(self.CATEGORIES_FIELD_NAME)
output = self.getOutputFromName(self.OUTPUT)
valuesField = layer.fieldNameIndex(valuesFieldName)
categoriesField = layer.fieldNameIndex(categoriesFieldName)
features = QGisLayers.features(layer)
nFeats = len(features)
values = {}
nFeat = 0
for feat in features:
nFeat += 1
progress.setPercentage(int((100 * nFeats) / nFeat))
attrs = feat.attributes()
try:
value = float(attrs[valuesField])
cat = unicode(attrs[categoriesField])
if cat not in values:
values[cat] = []
values[cat].append(value)
except:
pass
fields = [QgsField("category", QVariant.String), QgsField("min", QVariant.Double),
QgsField("max", QVariant.Double), QgsField("mean", QVariant.Double),
QgsField("stddev", QVariant.Double)]
writer = output.getTableWriter(fields)
for cat, v in values.items():
min, max, mean, stddev = calculateStats(v)
record = [cat, min, max, mean, stddev]
writer.addRecord(record)
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
vertices = self.getParameterValue(self.VERTICES)
isPolygon = layer.geometryType() == QGis.Polygon
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
layer.pendingFields().toList(), layer.wkbType(), layer.crs())
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
current = 0
for f in features:
featGeometry = QgsGeometry(f.geometry())
attrs = f.attributes()
newGeometry = self.densifyGeometry(featGeometry, int(vertices),
isPolygon)
feature = QgsFeature()
feature.setGeometry(newGeometry)
feature.setAttributes(attrs)
writer.addFeature(feature)
current += 1
progress.setPercentage(int(current * total))
del writer
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):
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() )
outFeat = QgsFeature()
inGeom = QgsGeometry()
nFeat = vprovider.featureCount()
nElement = 0
features = QGisLayers.features(vlayer)
for inFeat in features:
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 processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
provider = layer.dataProvider()
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
QGis.WKBPolygon, layer.crs())
outFeat = QgsFeature()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for inFeat in features:
outGeomList = []
if inFeat.geometry().isMultipart():
outGeomList = inFeat.geometry().asMultiPolyline()
else:
outGeomList.append(inFeat.geometry().asPolyline())
polyGeom = self.removeBadLines(outGeomList)
if len(polyGeom) <> 0:
outFeat.setGeometry(QgsGeometry.fromPolygon(polyGeom))
atMap = inFeat.attributes()
outFeat.setAttributes(atMap)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
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().toList(),
layer.wkbType(), targetCrs)
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.setAttributes(f.attributes())
writer.addFeature(outFeat)
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 processAlgorithm(self, progress):
output = self.getOutputFromName(self.OUTPUT)
vlayer = QGisLayers.getObjectFromUri(self.getParameterValue(
self.INPUT))
vprovider = vlayer.dataProvider()
fields = vprovider.fields()
fields.append(QgsField("AUTO", QVariant.Int))
writer = output.getVectorWriter(fields, vprovider.geometryType(),
vlayer.crs())
inFeat = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
nElement = 0
features = QGisLayers.features(vlayer)
nFeat = len(features)
for inFeat in features:
progress.setPercentage(int((100 * nElement) / nFeat))
nElement += 1
inGeom = inFeat.geometry()
outFeat.setGeometry(inGeom)
attrs = inFeat.attributes()
attrs.append(nElement)
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
valuesFieldName = self.getParameterValue(self.VALUES_FIELD_NAME)
categoriesFieldName = self.getParameterValue(self.CATEGORIES_FIELD_NAME)
output = self.getOutputFromName(self.OUTPUT)
valuesField = layer.fieldNameIndex(valuesFieldName)
categoriesField = layer.fieldNameIndex(categoriesFieldName)
features = QGisLayers.features(layer)
nFeat = len(features)
values = {}
for feat in features:
attrs = feat.attributes()
value = float(attrs[valuesField].toDouble()[0])
cat = unicode(attrs[categoriesField].toString())
if cat not in values:
values[cat] = []
values[cat].append(value)
fields = [QgsField("category", QVariant.String), QgsField("mean", QVariant.Double), QgsField("variance", QVariant.Double)]
writer = output.getTableWriter(fields)
for cat, value in values.items():
n, min_max, mean, var, skew, kurt = stats.describe(value)
record = [cat, mean, math.sqrt(var)]
writer.addRecord(record)
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):
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 handleAlgorithmResults(alg, progress, showResults=True):
wrongLayers = []
htmlResults = False
progress.setText("Loading resulting layers")
i = 0
for out in alg.outputs:
progress.setPercentage(100 * i / float(len(alg.outputs)))
if out.hidden or not out.open:
continue
if isinstance(out, (OutputRaster, OutputVector, OutputTable)):
try:
if out.value.startswith("memory:"):
layer = out.memoryLayer
QgsMapLayerRegistry.instance().addMapLayers([layer])
else:
if SextanteConfig.getSetting(
SextanteConfig.USE_FILENAME_AS_LAYER_NAME):
name = os.path.basename(out.value)
else:
name = out.description
QGisLayers.load(
out.value, name, alg.crs,
RenderingStyles.getStyle(alg.commandLineName(),
out.name))
except Exception, e:
wrongLayers.append(out)
#QMessageBox.critical(None, "Error", str(e))
elif isinstance(out, OutputHTML):
SextanteResults.addResult(out.description, out.value)
htmlResults = True
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(QVariant())
outFeat.setAttributes(atMap)
writer.addFeature( outFeat )
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.LAYERNAME))
attribute = self.getParameterValue(self.ATTRIBUTE)
idx = layer.fieldNameIndex(attribute)
fields = layer.pendingFields()
fields[idx] = QgsField(fields[idx].name(), QVariant.Double)
output = self.getOutputFromName(self.SAVENAME)
out = output.getVectorWriter(fields, layer.wkbType(), layer.crs())
i = 0
features = QGisLayers.features(layer)
featurecount = len(features)
for feature in features:
i+=1
progress.setPercentage(float(i) / featurecount * 100)
attributes = feature.attributes()
try:
v = unicode(attributes[idx].toString())
if '%' in v:
v = v.replace('%', "")
attributes[idx] = float(attributes[idx]) / float(100)
else:
attributes[idx] = float(attributes[idx])
except:
attributes[idx] = QVariant()
feature.setAttributes(attributes)
out.addFeature(feature)
del out
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
writer = self.getOutputFromName(self.OUTPUT_LAYER).getVectorWriter(layer.pendingFields(),
QGis.WKBPoint, layer.dataProvider().crs())
layer.select(layer.pendingAllAttributesList())
outFeat = QgsFeature()
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
current = 0
for inFeat in features:
inGeom = inFeat.geometry()
attrMap = inFeat.attributeMap()
outGeom = QgsGeometry(inGeom.centroid())
if outGeom is None:
raise GeoAlgorithmExecutionException("Error calculating centroid")
outFeat.setGeometry(outGeom)
outFeat.setAttributeMap(attrMap)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
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):
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):
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(), vprovider.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].toString()
if clazz not in classes:
classes[clazz] = len(classes.keys())
atMap.append(QVariant(classes[clazz]))
outFeat.setAttributes(atMap)
writer.addFeature( outFeat )
del writer
def handleAlgorithmResults(alg, progress, showResults = True):
wrongLayers = []
htmlResults = False;
progress.setText("Loading resulting layers")
i = 0
for out in alg.outputs:
progress.setPercentage(100 * i / float(len(alg.outputs)))
if out.hidden or not out.open:
continue
if isinstance(out, (OutputRaster, OutputVector, OutputTable)):
try:
if out.value.startswith("memory:"):
layer = out.memoryLayer
QgsMapLayerRegistry.instance().addMapLayers([layer])
else:
if SextanteConfig.getSetting(SextanteConfig.USE_FILENAME_AS_LAYER_NAME):
name = os.path.basename(out.value)
else:
name = out.description
QGisLayers.load(out.value, name, alg.crs, RenderingStyles.getStyle(alg.commandLineName(),out.name))
except Exception, e:
wrongLayers.append(out)
#QMessageBox.critical(None, "Error", str(e))
elif isinstance(out, OutputHTML):
SextanteResults.addResult(out.description, out.value)
htmlResults = True
def processAlgorithm(self, progress):
source = self.getParameterValue(self.INPUT)
vlayer = QGisLayers.getObjectFromUri(source)
output = self.getOutputFromName(self.OUTPUT)
vprovider = vlayer.dataProvider()
fields = vprovider.fields()
writer = output.getVectorWriter(fields, QGis.WKBPoint, self.crs)
xfieldindex = vlayer.fieldNameIndex(self.getParameterValue(
self.XFIELD))
yfieldindex = vlayer.fieldNameIndex(self.getParameterValue(
self.YFIELD))
crsId = self.getParameterValue(self.TARGET_CRS)
targetCrs = QgsCoordinateReferenceSystem(crsId)
self.crs = targetCrs
outFeat = QgsFeature()
nElement = 0
features = QGisLayers.features(vlayer)
nFeat = len(features)
for feature in features:
nElement += 1
progress.setPercentage((nElement * 100) / nFeat)
attrs = feature.attributes()
try:
x = float(attrs[xfieldindex])
y = float(attrs[yfieldindex])
except:
continue
pt = QgsPoint(x, y)
outFeat.setGeometry(QgsGeometry.fromPoint(pt))
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
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 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):
'''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):
'''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.getOutputFromName(self.OUTPUT_LAYER)
#input layers values are always a string with its location.
#That string can be converted into a QGIS object (a QgsVectorLayer in this case))
#using the Sextante.getObject() method
vectorLayer = QGisLayers.getObjectFromUri(inputFilename)
#And now we can process
#First we create the output layer.
#To do so, we call the getVectorWriter method in the Output object.
#That will give as a SextanteVectorWriter, that we can later use to add features.
provider = vectorLayer.dataProvider()
writer = output.getVectorWriter( provider.fields(), provider.geometryType(), vectorLayer.crs() )
#Now we take the selected features and add them to the output layer
features = QGisLayers.features(vectorLayer)
total = len(features)
i = 0
for feat in features:
writer.addFeature(feat)
progress.setPercentage(100 * i / float(total))
i += 1
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
tolerance =self.getParameterValue(self.TOLERANCE)
pointsBefore = 0
pointsAfter = 0
provider = layer.dataProvider()
layer.select(layer.pendingAllAttributesList())
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
layer.wkbType(), provider.crs())
current = 0
selection = QGisLayers.features(layer)
total = 100.0 / float(len(selection))
for f in selection:
featGeometry = QgsGeometry(f.geometry())
attrMap = f.attributeMap()
pointsBefore += self.geomVertexCount(featGeometry)
newGeometry = featGeometry.simplify(tolerance)
pointsAfter += self.geomVertexCount(newGeometry)
feature = QgsFeature()
feature.setGeometry(newGeometry)
feature.setAttributeMap(attrMap)
writer.addFeature(feature)
current += 1
progress.setPercentage(int(current * total))
del writer
SextanteLog.addToLog(SextanteLog.LOG_INFO, "Simplify: Input geometries have been simplified from"
+ str(pointsBefore) + " to " + str(pointsAfter) + " points.")
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 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):
'''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):
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))
provider = layer.dataProvider()
layer.select(layer.pendingAllAttributesList())
geomType = self.multiToSingleGeom(provider.geometryType())
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
geomType, provider.crs())
outFeat = QgsFeature()
inGeom = QgsGeometry()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for inFeat in features:
inGeom = inFeat.geometry()
atMap = inFeat.attributeMap()
features = self.extractAsSingle(inGeom)
outFeat.setAttributeMap(atMap)
for f in features:
outFeat.setGeometry(f)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
source = self.getParameterValue(self.INPUT)
vlayer = QGisLayers.getObjectFromUri(source)
output = self.getOutputFromName(self.OUTPUT)
vprovider = vlayer.dataProvider()
fields = vprovider.fields()
writer = output.getVectorWriter(fields, QGis.WKBPoint, self.crs)
xfieldindex = vlayer.fieldNameIndex(self.getParameterValue(self.XFIELD))
yfieldindex = vlayer.fieldNameIndex(self.getParameterValue(self.YFIELD))
outFeat = QgsFeature()
nElement = 0
features = QGisLayers.features(vlayer)
nFeat = len(features)
for feature in features:
nElement += 1
progress.setPercentage((nElement*100)/nFeat)
attrs = feature.attributes()
try:
x = float(attrs[xfieldindex].toString())
y = float(attrs[yfieldindex].toString())
except:
continue
pt = QgsPoint(x, y)
outFeat.setGeometry(QgsGeometry.fromPoint(pt))
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
del writer
def processAlgorithm(self, progress):
filename = self.getParameterValue(self.INPUT)
layer = QGisLayers.getObjectFromUri(filename)
field = self.getParameterValue(self.FIELD)
method = self.getParameterValue(self.METHOD)
layer.removeSelection()
index = layer.fieldNameIndex(field)
unique = utils.getUniqueValues(layer, index)
featureCount = layer.featureCount()
value = int(self.getParameterValue(self.NUMBER))
if method == 0:
if value > featureCount:
raise GeoAlgorithmExecutionException(
"Selected number is greater that feature count. Choose lesser value and try again."
)
else:
if value > 100:
raise GeoAlgorithmExecutionException(
"Persentage can't be greater than 100. Set corrent value and try again."
)
value = value / 100.0
selran = []
inFeat = QgsFeature()
current = 0
total = 100.0 / float(featureCount * len(unique))
features = QGisLayers.features(layer)
if not len(unique) == featureCount:
for i in unique:
FIDs = []
for inFeat in features:
attrs = inFeat.attributes()
if attrs[index] == QVariant(i):
FIDs.append(inFeat.id())
current += 1
progress.setPercentage(int(current * total))
if method == 1:
selValue = int(round(value * len(FIDs), 0))
else:
selValue = value
if selValue >= len(FIDs):
selFeat = FIDs
else:
selFeat = random.sample(FIDs, selValue)
selran.extend(selFeat)
layer.setSelectedFeatures(selran)
else:
layer.setSelectedFeatures(range(0, featureCount))
self.setOutputValue(self.OUTPUT, filename)
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 handleAlgorithmResults(alg, showResults=True):
htmlResults = False
for out in alg.outputs:
if out.hidden or not out.open:
continue
if isinstance(out, (OutputRaster, OutputVector, OutputTable)):
try:
if out.value.startswith("memory:"):
layer = out.memoryLayer
QgsMapLayerRegistry.instance().addMapLayer(layer)
else:
if SextanteConfig.getSetting(
SextanteConfig.USE_FILENAME_AS_LAYER_NAME):
name = os.path.basename(out.value)
else:
name = out.description
QGisLayers.load(
out.value, name, alg.crs,
RenderingStyles.getStyle(alg.commandLineName(),
out.name))
except Exception, e:
QMessageBox.critical(None, "Error", str(e))
elif isinstance(out, OutputHTML):
SextanteResults.addResult(out.description, out.value)
htmlResults = True
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):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
interval = self.getParameterValue(self.INTERVAL)
isPolygon = layer.geometryType() == QGis.Polygon
provider = layer.dataProvider()
layer.select(layer.pendingAllAttributesList())
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
layer.wkbType(), provider.crs())
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
current = 0
for f in features:
featGeometry = QgsGeometry(f.geometry())
attrMap = f.attributeMap()
newGeometry = self.densifyGeometry(featGeometry, interval, isPolygon)
feature = QgsFeature()
feature.setGeometry(newGeometry)
feature.setAttributeMap(attrMap)
writer.addFeature(feature)
current += 1
progress.setPercentage(int(current * total))
del writer
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)
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 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):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
provider = layer.dataProvider()
geomType = self.multiToSingleGeom(provider.geometryType())
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
geomType, layer.crs())
outFeat = QgsFeature()
inGeom = QgsGeometry()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for inFeat in features:
inGeom = inFeat.geometry()
atMap = inFeat.attributes()
features = self.extractAsSingle(inGeom)
outFeat.setAttributes(atMap)
for f in features:
outFeat.setGeometry(f)
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
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 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 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 processAlgorithm(self, progress):
vlayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
output = self.getOutputFromName(self.OUTPUT)
vprovider = vlayer.dataProvider()
allAttrs = vprovider.attributeIndexes()
vprovider.select( allAttrs )
fields = vprovider.fields()
writer = output.getVectorWriter(fields, QGis.WKBLineString, vprovider.crs() )
inFeat = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
nFeat = vprovider.featureCount()
nElement = 0
features = QGisLayers.features(layer)
for feature in features:
nElement += 1
progress.setPercentage((nElement*100)/nFeat)
inGeom = feature.geometry()
atMap = feature.attributeMap()
segments = self.extractAsSingleSegments( inGeom )
outFeat.setAttributeMap( atMap )
for segment in segments:
outFeat.setGeometry(segment)
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 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):
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 processAlgorithm(self, progress):
vlayer = QGisLayers.getObjectFromUri(self.getParameterValue(
self.INPUT))
output = self.getOutputFromName(self.OUTPUT)
vprovider = vlayer.dataProvider()
allAttrs = vprovider.attributeIndexes()
vprovider.select(allAttrs)
fields = vprovider.fields()
writer = output.getVectorWriter(fields, QGis.WKBLineString,
vprovider.crs())
inFeat = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
nFeat = vprovider.featureCount()
nElement = 0
features = QGisLayers.features(layer)
for feature in features:
nElement += 1
progress.setPercentage((nElement * 100) / nFeat)
inGeom = feature.geometry()
atMap = feature.attributeMap()
segments = self.extractAsSingleSegments(inGeom)
outFeat.setAttributeMap(atMap)
for segment in segments:
outFeat.setGeometry(segment)
writer.addFeature(outFeat)
del writer