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):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
provider = layer.dataProvider()
layer.select(layer.pendingAllAttributesList())
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.attributeMap()
points = utils.extractPoints(inGeom)
outFeat.setAttributeMap(atMap)
for i in points:
outFeat.setGeometry(outGeom.fromPoint(i))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
provider = layer.dataProvider()
layer.select(layer.pendingAllAttributesList())
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.attributeMap()
points = utils.extractPoints(inGeom)
outFeat.setAttributeMap(atMap)
for i in points:
outFeat.setGeometry(outGeom.fromPoint(i))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(
self.POINTS))
output = self.getOutputValue(self.OUTPUT)
provider = layer.dataProvider()
spatialIndex = utils.createSpatialIndex(layer)
provider.rewind()
provider.select()
neighbour = QgsFeature()
distance = QgsDistanceArea()
sumDist = 0.00
A = layer.extent()
A = float(A.width() * A.height())
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for feat in features:
neighbourID = spatialIndex.nearestNeighbor(
feat.geometry().asPoint(), 2)[1]
provider.featureAtId(neighbourID, neighbour, True)
sumDist += distance.measureLine(neighbour.geometry().asPoint(),
feat.geometry().asPoint())
current += 1
progress.setPercentage(int(current * total))
count = provider.featureCount()
do = float(sumDist) / count
de = float(0.5 / math.sqrt(count / A))
d = float(do / de)
SE = float(0.26136 / math.sqrt((count**2) / A))
zscore = float((do - de) / SE)
data = []
data.append("Observed mean distance: " + unicode(do))
data.append("Expected mean distance: " + unicode(de))
data.append("Nearest neighbour index: " + unicode(d))
data.append("Number of points: " + unicode(count))
data.append("Z-Score: " + unicode(zscore))
self.createHTML(output, data)
self.setOutputValue(self.OBSERVED_MD, float(data[0].split(": ")[1]))
self.setOutputValue(self.EXPECTED_MD, float(data[1].split(": ")[1]))
self.setOutputValue(self.NN_INDEX, float(data[2].split(": ")[1]))
self.setOutputValue(self.POINT_COUNT, float(data[3].split(": ")[1]))
self.setOutputValue(self.Z_SCORE, float(data[4].split(": ")[1]))
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
output = self.getOutputValue(self.OUTPUT)
provider = layer.dataProvider()
spatialIndex = utils.createSpatialIndex(layer)
provider.rewind()
provider.select()
neighbour = QgsFeature()
distance = QgsDistanceArea()
sumDist = 0.00
A = layer.extent()
A = float(A.width() * A.height())
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for feat in features:
neighbourID = spatialIndex.nearestNeighbor(feat.geometry().asPoint(), 2)[1]
provider.featureAtId(neighbourID, neighbour, True)
sumDist += distance.measureLine(neighbour.geometry().asPoint(), feat.geometry().asPoint())
current += 1
progress.setPercentage(int(current * total))
count = provider.featureCount()
do = float(sumDist) / count
de = float(0.5 / math.sqrt(count / A))
d = float(do / de)
SE = float(0.26136 / math.sqrt(( count ** 2) / A))
zscore = float((do - de) / SE)
data = []
data.append("Observed mean distance: " + unicode(do))
data.append("Expected mean distance: " + unicode(de))
data.append("Nearest neighbour index: " + unicode(d))
data.append("Number of points: " + unicode(count))
data.append("Z-Score: " + unicode(zscore))
self.createHTML(output, data)
self.setOutputValue(self.OBSERVED_MD, float( data[ 0 ].split( ": " )[ 1 ] ) )
self.setOutputValue(self.EXPECTED_MD, float( data[ 1 ].split( ": " )[ 1 ] ) )
self.setOutputValue(self.NN_INDEX, float( data[ 2 ].split( ": " )[ 1 ] ) )
self.setOutputValue(self.POINT_COUNT, float( data[ 3 ].split( ": " )[ 1 ] ) )
self.setOutputValue(self.Z_SCORE, float( data[ 4 ].split( ": " )[ 1 ] ) )
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
fieldName = self.getParameterValue(self.FIELD_NAME)
outputFile = self.getOutputValue(self.OUTPUT_HTML_FILE)
index = layer.fieldNameIndex(fieldName)
layer.select([index], QgsRectangle(), False)
cvValue = 0
minValue = 0
maxValue = 0
sumValue = 0
meanValue = 0
medianValue = 0
stdDevValue = 0
isFirst = True
values = []
features = QGisLayers.features(layer)
count = len(features)
total = 100.0 / float(count)
current = 0
for ft in features:
value = float(ft.attributeMap()[index].toDouble()[0])
if isFirst:
minValue = value
maxValue = value
isFirst = False
else:
if value < minValue:
minValue = value
if value > maxValue:
maxValue = value
values.append( value )
sumValue += value
current += 1
progress.setPercentage(int(current * total))
# calculate additional values
rValue = maxValue - minValue
uniqueValue = utils.getUniqueValuesCount(layer, index)
if count > 0:
meanValue = sumValue / count
if meanValue != 0.00:
for v in values:
stdDevValue += ((v - meanValue) * (v - meanValue))
stdDevValue = math.sqrt(stdDevValue / count)
cvValue = stdDevValue / meanValue
if count > 1:
tmp = values
tmp.sort()
# calculate median
if (count % 2) == 0:
medianValue = 0.5 * (tmp[(count - 1) / 2] + tmp[count / 2])
else:
medianValue = tmp[(count + 1) / 2 - 1]
data = []
data.append("Count: " + unicode(count))
data.append("Unique values: " + unicode(uniqueValue))
data.append("Minimum value: " + unicode(minValue))
data.append("Maximum value: " + unicode(maxValue))
data.append("Range: " + unicode(rValue))
data.append("Sum: " + unicode(sumValue))
data.append("Mean value: " + unicode(meanValue))
data.append("Median value: " + unicode(medianValue))
data.append("Standard deviation: " + unicode(stdDevValue))
data.append("Coefficient of Variation: " + unicode(cvValue))
self.createHTML(outputFile, data)
self.setOutputValue(self.COUNT, count)
self.setOutputValue(self.UNIQUE, uniqueValue)
self.setOutputValue(self.MIN, minValue)
self.setOutputValue(self.MAX, maxValue)
self.setOutputValue(self.RANGE, rValue)
self.setOutputValue(self.SUM, sumValue)
self.setOutputValue(self.MEAN, meanValue)
self.setOutputValue(self.MEDIAN, medianValue)
self.setOutputValue(self.STD_DEV, stdDevValue)
self.setOutputValue(self.CV, cvValue)
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.dataProvider().fieldNameIndex(
self.getParameterValue(self.WEIGHT))
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)
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, True)
tmpGeom = QgsGeometry(ftPoint.geometry())
if geom.contains(tmpGeom):
try:
weight = float(ftPoint.attributeMap()[fieldidx])
except:
weight = 1
count += weight
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):
layer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
fieldName = self.getParameterValue(self.FIELD_NAME)
outputFile = self.getOutputValue(self.OUTPUT_HTML_FILE)
index = layer.fieldNameIndex(fieldName)
layer.select([index], QgsRectangle(), False)
sumValue = 0
minValue = 0
maxValue = 0
meanValue = 0
countEmpty = 0
countFilled = 0
isFirst = True
values = []
features = QGisLayers.features(layer)
count = len(features)
total = 100.0 / float(count)
current = 0
for ft in features:
length = float(len(ft.attributeMap()[index].toString()))
if isFirst:
minValue = length
maxValue = length
isFirst = False
else:
if length < minValue:
minValue = length
if length > maxValue:
maxValue = length
if length != 0.00:
countFilled += 1
else:
countEmpty += 1
values.append(length)
sumValue += length
current += 1
progress.setPercentage(int(current * total))
n = float(len(values))
if n > 0:
meanValue = sumValue / n
uniqueValues = utils.getUniqueValuesCount(layer, index)
data = []
data.append("Minimum length: " + unicode(minValue))
data.append("Maximum length: " + unicode(maxValue))
data.append("Mean length: " + unicode(meanValue))
data.append("Filled: " + unicode(countFilled))
data.append("Empty: " + unicode(countEmpty))
data.append("Count: " + unicode(count))
data.append("Unique: " + unicode(uniqueValues))
self.createHTML(outputFile, data)
self.setOutputValue(self.MIN_LEN, minValue)
self.setOutputValue(self.MAX_LEN, maxValue)
self.setOutputValue(self.MEAN_LEN, meanValue)
self.setOutputValue(self.FILLED, countFilled)
self.setOutputValue(self.EMPTY, countEmpty)
self.setOutputValue(self.COUNT, count)
self.setOutputValue(self.UNIQUE, uniqueValues)
def processAlgorithm(self, progress):
layerA = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_A))
layerB = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_B))
fieldA = self.getParameterValue(self.FIELD_A)
fieldB = self.getParameterValue(self.FIELD_B)
providerA = layerA.dataProvider()
providerB = layerB.dataProvider()
idxA = layerA.fieldNameIndex(fieldA)
idxB = layerB.fieldNameIndex(fieldB)
fieldList = {
0: layerA.pendingFields()[idxA],
1: layerB.pendingFields()[idxB]
}
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
fieldList, QGis.WKBPoint, providerA.crs())
spatialIndex = utils.createSpatialIndex(layerB)
providerA.rewind()
layerA.select([idxA])
providerB.rewind()
layerB.select([idxB])
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
tmpGeom = QgsGeometry()
current = 0
total = 100.0 / float(providerA.featureCount())
hasIntersections = False
while layerA.nextFeature(inFeatA):
inGeom = inFeatA.geometry()
hasIntersections = False
lines = spatialIndex.intersects(inGeom.boundingBox())
if len(lines) > 0:
hasIntersections = True
if hasIntersections:
layerB.select([idxB])
for i in lines:
layerB.featureAtId(int(i), inFeatB)
tmpGeom = QgsGeometry(inFeatB.geometry())
points = []
atMapA = inFeatA.attributeMap()
atMapB = inFeatB.attributeMap()
if inGeom.intersects(tmpGeom):
tempGeom = inGeom.intersection(tmpGeom)
if tempGeom.type() == QGis.Point:
if tempGeom.isMultipart():
points = tempGeom.asMultiPoint()
else:
points.append(tempGeom.asPoint())
for j in points:
outFeat.setGeometry(tempGeom.fromPoint(j))
outFeat.addAttribute(0, atMapA[idxA])
outFeat.addAttribute(1, atMapB[idxB])
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
lineLayer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.LINES))
polyLayer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.POLYGONS))
lengthFieldName = self.getParameterValue(self.LEN_FIELD)
countFieldName = self.getParameterValue(self.COUNT_FIELD)
polyProvider = polyLayer.dataProvider()
lineProvider = lineLayer.dataProvider()
if polyProvider.crs() != lineProvider.crs():
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"CRS warning: Input layers have non-matching CRS. This may cause unexpected results."
)
idxLength, fieldList = utils.findOrCreateField(
polyLayer, polyLayer.pendingFields(), lengthFieldName)
idxCount, fieldList = utils.findOrCreateField(polyLayer, fieldList,
countFieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
fieldList, polyProvider.geometryType(), polyProvider.crs())
spatialIndex = utils.createSpatialIndex(lineLayer)
lineProvider.rewind()
lineProvider.select()
allAttrs = polyLayer.pendingAllAttributesList()
polyLayer.select(allAttrs)
ftLine = QgsFeature()
ftPoly = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
outGeom = QgsGeometry()
distArea = QgsDistanceArea()
current = 0
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
hasIntersections = False
for ftPoly in features:
inGeom = QgsGeometry(ftPoly.geometry())
atMap = ftPoly.attributeMap()
count = 0
length = 0
hasIntersections = False
lines = spatialIndex.intersects(inGeom.boundingBox())
if len(lines) > 0:
hasIntersections = True
if hasIntersections:
for i in lines:
lineProvider.featureAtId(int(i), ftLine)
tmpGeom = QgsGeometry(ftLine.geometry())
if inGeom.intersects(tmpGeom):
outGeom = inGeom.intersection(tmpGeom)
length += distArea.measure(outGeom)
count += 1
outFeat.setGeometry(inGeom)
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(idxLength, QVariant(length))
outFeat.addAttribute(idxCount, QVariant(count))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
fieldName = self.getParameterValue(self.FIELD_NAME)
outputFile = self.getOutputValue(self.OUTPUT_HTML_FILE)
index = layer.fieldNameIndex(fieldName)
layer.select([index], QgsRectangle(), False)
cvValue = 0
minValue = 0
maxValue = 0
sumValue = 0
meanValue = 0
medianValue = 0
stdDevValue = 0
isFirst = True
values = []
features = QGisLayers.features(layer)
count = len(features)
total = 100.0 / float(count)
current = 0
for ft in features:
value = float(ft.attributeMap()[index].toDouble()[0])
if isFirst:
minValue = value
maxValue = value
isFirst = False
else:
if value < minValue:
minValue = value
if value > maxValue:
maxValue = value
values.append(value)
sumValue += value
current += 1
progress.setPercentage(int(current * total))
# calculate additional values
rValue = maxValue - minValue
uniqueValue = utils.getUniqueValuesCount(layer, index)
if count > 0:
meanValue = sumValue / count
if meanValue != 0.00:
for v in values:
stdDevValue += ((v - meanValue) * (v - meanValue))
stdDevValue = math.sqrt(stdDevValue / count)
cvValue = stdDevValue / meanValue
if count > 1:
tmp = values
tmp.sort()
# calculate median
if (count % 2) == 0:
medianValue = 0.5 * (tmp[(count - 1) / 2] + tmp[count / 2])
else:
medianValue = tmp[(count + 1) / 2 - 1]
data = []
data.append("Count: " + unicode(count))
data.append("Unique values: " + unicode(uniqueValue))
data.append("Minimum value: " + unicode(minValue))
data.append("Maximum value: " + unicode(maxValue))
data.append("Range: " + unicode(rValue))
data.append("Sum: " + unicode(sumValue))
data.append("Mean value: " + unicode(meanValue))
data.append("Median value: " + unicode(medianValue))
data.append("Standard deviation: " + unicode(stdDevValue))
data.append("Coefficient of Variation: " + unicode(cvValue))
self.createHTML(outputFile, data)
self.setOutputValue(self.COUNT, count)
self.setOutputValue(self.UNIQUE, uniqueValue)
self.setOutputValue(self.MIN, minValue)
self.setOutputValue(self.MAX, maxValue)
self.setOutputValue(self.RANGE, rValue)
self.setOutputValue(self.SUM, sumValue)
self.setOutputValue(self.MEAN, meanValue)
self.setOutputValue(self.MEDIAN, medianValue)
self.setOutputValue(self.STD_DEV, stdDevValue)
self.setOutputValue(self.CV, cvValue)
def processAlgorithm(self, progress):
layerA = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_A))
layerB = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_B))
fieldA = self.getParameterValue(self.FIELD_A)
fieldB = self.getParameterValue(self.FIELD_B)
providerA = layerA.dataProvider()
providerB = layerB.dataProvider()
idxA = layerA.fieldNameIndex(fieldA)
idxB = layerB.fieldNameIndex(fieldB)
fieldList = {0 : layerA.pendingFields()[idxA],
1 : layerB.pendingFields()[idxB]
}
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList,
QGis.WKBPoint, providerA.crs())
spatialIndex = utils.createSpatialIndex(layerB)
providerA.rewind()
layerA.select([idxA])
providerB.rewind()
layerB.select([idxB])
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
tmpGeom = QgsGeometry()
current = 0
total = 100.0 / float(providerA.featureCount())
hasIntersections = False
while layerA.nextFeature(inFeatA):
inGeom = inFeatA.geometry()
hasIntersections = False
lines = spatialIndex.intersects(inGeom.boundingBox())
if len(lines) > 0:
hasIntersections = True
if hasIntersections:
layerB.select([idxB])
for i in lines:
layerB.featureAtId(int(i), inFeatB)
tmpGeom = QgsGeometry(inFeatB.geometry())
points = []
atMapA = inFeatA.attributeMap()
atMapB = inFeatB.attributeMap()
if inGeom.intersects(tmpGeom):
tempGeom = inGeom.intersection(tmpGeom)
if tempGeom.type() == QGis.Point:
if tempGeom.isMultipart():
points = tempGeom.asMultiPoint()
else:
points.append(tempGeom.asPoint())
for j in points:
outFeat.setGeometry(tempGeom.fromPoint(j))
outFeat.addAttribute(0, atMapA[idxA])
outFeat.addAttribute(1, atMapB[idxB])
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(
self.POINTS))
weightField = self.getParameterValue(self.WEIGHT)
uniqueField = self.getParameterValue(self.UID)
provider = layer.dataProvider()
weightIndex = layer.fieldNameIndex(weightField)
uniqueIndex = layer.fieldNameIndex(uniqueField)
if uniqueIndex <> -1:
uniqueValues = layer.uniqueValues(uniqueIndex)
single = False
else:
uniqueValues = [QVariant(1)]
single = True
fieldList = {
0: QgsField("MEAN_X", QVariant.Double, "", 24, 15),
1: QgsField("MEAN_Y", QVariant.Double, "", 24, 15),
2: QgsField("UID", QVariant.String, "", 255)
}
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
fieldList, QGis.WKBPoint, provider.crs())
current = 0
total = 100.0 / float(provider.featureCount() * len(uniqueValues))
feat = QgsFeature()
outFeat = QgsFeature()
for j in uniqueValues:
provider.rewind()
layer.select([weightIndex, uniqueIndex])
cx = 0.00
cy = 0.00
points = []
weights = []
while layer.nextFeature(feat):
current += 1
progress.setPercentage(current * total)
if single:
check = j.toString().trimmed()
else:
check = feat.attributeMap()[uniqueIndex].toString(
).trimmed()
if check == j.toString().trimmed():
cx = 0.00
cy = 0.00
if weightIndex == -1:
weight = 1.00
else:
try:
weight = float(
feat.attributeMap()[weightIndex].toDouble()[0])
except:
weight = 1.00
geom = QgsGeometry(feat.geometry())
geom = utils.extractPoints(geom)
for i in geom:
cx += i.x()
cy += i.y()
points.append(QgsPoint((cx / len(geom)), (cy / len(geom))))
weights.append(weight)
sumWeight = sum(weights)
cx = 0.00
cy = 0.00
item = 0
for item, i in enumerate(points):
cx += i.x() * weights[item]
cy += i.y() * weights[item]
cx = cx / sumWeight
cy = cy / sumWeight
meanPoint = QgsPoint(cx, cy)
outFeat.setGeometry(QgsGeometry.fromPoint(meanPoint))
outFeat.addAttribute(0, QVariant(cx))
outFeat.addAttribute(1, QVariant(cy))
outFeat.addAttribute(2, QVariant(j))
writer.addFeature(outFeat)
if single:
break
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
method = self.getParameterValue(self.METHOD)
provider = layer.dataProvider()
geometryType = layer.geometryType()
layer.select(layer.pendingAllAttributesList())
idx1 = -1
idx2 = -1
fields = layer.pendingFields()
if geometryType == QGis.Polygon:
idx1, fields = utils.findOrCreateField(layer, fields, "area", 21,
6)
idx2, fields = utils.findOrCreateField(layer, fields, "perimeter",
21, 6)
elif geometryType == QGis.Line:
idx1, fields = utils.findOrCreateField(layer, fields, "length", 21,
6)
idx2 = idx1
else:
idx1, fields = utils.findOrCreateField(layer, fields, "xcoord", 21,
6)
idx2, fields = utils.findOrCreateField(layer, fields, "ycoord", 21,
6)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
fields, provider.geometryType(), provider.crs())
ellips = None
crs = None
coordTransform = None
# calculate with:
# 0 - layer CRS
# 1 - project CRS
# 2 - ellipsoidal
if method == 2:
settings = QSettings()
ellips = settings.value("/qgis/measure/ellipsoid",
"WGS84").toString()
crs = layer.crs().srsid()
elif method == 1:
mapCRS = QGisLayers.iface.mapCanvas().mapRenderer().destinationCrs(
)
layCRS = layer.crs()
coordTransform = QgsCoordinateTransform(layCRS, mapCRS)
outFeat = QgsFeature()
inGeom = QgsGeometry()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for inFeat in features:
inGeom = inFeat.geometry()
if method == 1:
inGeom.transform(coordTransform)
(attr1, attr2) = self.simpleMeasure(inGeom, method, ellips, crs)
outFeat.setGeometry(inGeom)
atMap = inFeat.attributeMap()
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(idx1, QVariant(attr1))
outFeat.addAttribute(idx2, QVariant(attr2))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
lineLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.LINES))
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
lengthFieldName = self.getParameterValue(self.LEN_FIELD)
countFieldName = self.getParameterValue(self.COUNT_FIELD)
polyProvider = polyLayer.dataProvider()
lineProvider = lineLayer.dataProvider()
if polyProvider.crs() != lineProvider.crs():
SextanteLog.addToLog(SextanteLog.LOG_WARNING,
"CRS warning: Input layers have non-matching CRS. This may cause unexpected results.")
idxLength, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), lengthFieldName)
idxCount, fieldList = utils.findOrCreateField(polyLayer, fieldList, countFieldName)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList,
polyProvider.geometryType(), polyProvider.crs())
spatialIndex = utils.createSpatialIndex(lineLayer)
lineProvider.rewind()
lineProvider.select()
allAttrs = polyLayer.pendingAllAttributesList()
polyLayer.select(allAttrs)
ftLine = QgsFeature()
ftPoly = QgsFeature()
outFeat = QgsFeature()
inGeom = QgsGeometry()
outGeom = QgsGeometry()
distArea = QgsDistanceArea()
current = 0
features = QGisLayers.features(polyLayer)
total = 100.0 / float(len(features))
hasIntersections = False
for ftPoly in features:
inGeom = QgsGeometry(ftPoly.geometry())
atMap = ftPoly.attributeMap()
count = 0
length = 0
hasIntersections = False
lines = spatialIndex.intersects(inGeom.boundingBox())
if len(lines) > 0:
hasIntersections = True
if hasIntersections:
for i in lines:
lineProvider.featureAtId(int(i), ftLine)
tmpGeom = QgsGeometry(ftLine.geometry())
if inGeom.intersects(tmpGeom):
outGeom = inGeom.intersection(tmpGeom)
length += distArea.measure(outGeom)
count += 1
outFeat.setGeometry(inGeom)
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(idxLength, QVariant(length))
outFeat.addAttribute(idxCount, QVariant(count))
writer.addFeature(outFeat)
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
weightField = self.getParameterValue(self.WEIGHT)
uniqueField = self.getParameterValue(self.UID)
provider = layer.dataProvider()
weightIndex = layer.fieldNameIndex(weightField)
uniqueIndex = layer.fieldNameIndex(uniqueField)
if uniqueIndex <> -1:
uniqueValues = layer.uniqueValues(uniqueIndex)
single = False
else:
uniqueValues = [QVariant(1)]
single = True
fieldList = {0 : QgsField("MEAN_X", QVariant.Double, "", 24, 15),
1 : QgsField("MEAN_Y", QVariant.Double, "", 24, 15),
2 : QgsField("UID", QVariant.String, "", 255)
}
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList,
QGis.WKBPoint, provider.crs())
current = 0
total = 100.0 / float(provider.featureCount() * len(uniqueValues))
feat = QgsFeature()
outFeat = QgsFeature()
for j in uniqueValues:
provider.rewind()
layer.select([weightIndex, uniqueIndex])
cx = 0.00
cy = 0.00
points = []
weights = []
while layer.nextFeature(feat):
current += 1
progress.setPercentage(current * total)
if single:
check = j.toString().trimmed()
else:
check = feat.attributeMap()[uniqueIndex].toString().trimmed()
if check == j.toString().trimmed():
cx = 0.00
cy = 0.00
if weightIndex == -1:
weight = 1.00
else:
try:
weight = float(feat.attributeMap()[weightIndex].toDouble()[0])
except:
weight = 1.00
geom = QgsGeometry(feat.geometry())
geom = utils.extractPoints(geom)
for i in geom:
cx += i.x()
cy += i.y()
points.append(QgsPoint((cx / len(geom)), (cy / len(geom))))
weights.append(weight)
sumWeight = sum(weights)
cx = 0.00
cy = 0.00
item = 0
for item, i in enumerate(points):
cx += i.x() * weights[item]
cy += i.y() * weights[item]
cx = cx / sumWeight
cy = cy / sumWeight
meanPoint = QgsPoint(cx, cy)
outFeat.setGeometry(QgsGeometry.fromPoint(meanPoint))
outFeat.addAttribute(0, QVariant(cx))
outFeat.addAttribute(1, QVariant(cy))
outFeat.addAttribute(2, QVariant(j))
writer.addFeature(outFeat)
if single:
break
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
method = self.getParameterValue(self.METHOD)
provider = layer.dataProvider()
geometryType = layer.geometryType()
layer.select(layer.pendingAllAttributesList())
idx1 = -1
idx2 = -1
fields = layer.pendingFields()
if geometryType == QGis.Polygon:
idx1, fields = utils.findOrCreateField(layer, fields, "area", 21, 6)
idx2, fields = utils.findOrCreateField(layer, fields, "perimeter", 21, 6)
elif geometryType == QGis.Line:
idx1, fields = utils.findOrCreateField(layer, fields, "length", 21, 6)
idx2 = idx1
else:
idx1, fields = utils.findOrCreateField(layer, fields, "xcoord", 21, 6)
idx2, fields = utils.findOrCreateField(layer, fields, "ycoord", 21, 6)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fields,
provider.geometryType(), provider.crs())
ellips = None
crs = None
coordTransform = None
# calculate with:
# 0 - layer CRS
# 1 - project CRS
# 2 - ellipsoidal
if method == 2:
settings = QSettings()
ellips = settings.value("/qgis/measure/ellipsoid", "WGS84").toString()
crs = layer.crs().srsid()
elif method == 1:
mapCRS = QGisLayers.iface.mapCanvas().mapRenderer().destinationCrs()
layCRS = layer.crs()
coordTransform = QgsCoordinateTransform(layCRS, mapCRS)
outFeat = QgsFeature()
inGeom = QgsGeometry()
current = 0
features = QGisLayers.features(layer)
total = 100.0 / float(len(features))
for inFeat in features:
inGeom = inFeat.geometry()
if method == 1:
inGeom.transform(coordTransform)
(attr1, attr2) = self.simpleMeasure(inGeom, method, ellips, crs)
outFeat.setGeometry(inGeom)
atMap = inFeat.attributeMap()
outFeat.setAttributeMap(atMap)
outFeat.addAttribute(idx1, QVariant(attr1))
outFeat.addAttribute(idx2, QVariant(attr2))
writer.addFeature( outFeat )
current += 1
progress.setPercentage(int(current * total))
del writer
def processAlgorithm(self, progress):
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
fieldName = self.getParameterValue(self.FIELD_NAME)
outputFile = self.getOutputValue(self.OUTPUT_HTML_FILE)
index = layer.fieldNameIndex(fieldName)
layer.select([index], QgsRectangle(), False)
sumValue = 0
minValue = 0
maxValue = 0
meanValue = 0
countEmpty = 0
countFilled = 0
isFirst = True
values = []
features = QGisLayers.features(layer)
count = len(features)
total = 100.0 / float(count)
current = 0
for ft in features:
length = float(len(ft.attributeMap()[index].toString()))
if isFirst:
minValue = length
maxValue = length
isFirst = False
else:
if length < minValue:
minValue = length
if length > maxValue:
maxValue = length
if length != 0.00:
countFilled += 1
else:
countEmpty += 1
values.append(length)
sumValue += length
current += 1
progress.setPercentage(int(current * total))
n = float(len(values))
if n > 0:
meanValue = sumValue / n
uniqueValues = utils.getUniqueValuesCount(layer, index)
data = []
data.append("Minimum length: " + unicode(minValue))
data.append("Maximum length: " + unicode(maxValue))
data.append("Mean length: " + unicode(meanValue))
data.append("Filled: " + unicode(countFilled))
data.append("Empty: " + unicode(countEmpty))
data.append("Count: " + unicode(count))
data.append("Unique: " + unicode(uniqueValues))
self.createHTML(outputFile, data)
self.setOutputValue(self.MIN_LEN, minValue)
self.setOutputValue(self.MAX_LEN, maxValue)
self.setOutputValue(self.MEAN_LEN, meanValue)
self.setOutputValue(self.FILLED, countFilled)
self.setOutputValue(self.EMPTY, countEmpty)
self.setOutputValue(self.COUNT, count)
self.setOutputValue(self.UNIQUE, uniqueValues)