mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-04 00:30:59 -05:00
121 lines
4.7 KiB
Python
121 lines
4.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
PointsInPolygon.py
|
|
---------------------
|
|
Date : August 2012
|
|
Copyright : (C) 2012 by Victor Olaya
|
|
Email : volayaf at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
from sextante.parameters.ParameterTableField import ParameterTableField
|
|
|
|
__author__ = 'Victor Olaya'
|
|
__date__ = 'August 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from PyQt4 import QtGui
|
|
from PyQt4.QtCore import *
|
|
|
|
from qgis.core import *
|
|
|
|
from sextante.core.GeoAlgorithm import GeoAlgorithm
|
|
from sextante.core.QGisLayers import QGisLayers
|
|
|
|
from sextante.parameters.ParameterVector import ParameterVector
|
|
from sextante.parameters.ParameterString import ParameterString
|
|
|
|
from sextante.outputs.OutputVector import OutputVector
|
|
|
|
from sextante.algs.ftools import FToolsUtils as utils
|
|
|
|
class PointsInPolygonUnique(GeoAlgorithm):
|
|
|
|
POLYGONS = "POLYGONS"
|
|
POINTS = "POINTS"
|
|
OUTPUT = "OUTPUT"
|
|
FIELD = "FIELD"
|
|
CLASSFIELD = "CLASSFIELD"
|
|
|
|
#===========================================================================
|
|
# def getIcon(self):
|
|
# return QtGui.QIcon(os.path.dirname(__file__) + "/icons/sum_points.png")
|
|
#===========================================================================
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = "Count unique points in polygon"
|
|
self.group = "Vector analysis tools"
|
|
self.addParameter(ParameterVector(self.POLYGONS, "Polygons", ParameterVector.VECTOR_TYPE_POLYGON))
|
|
self.addParameter(ParameterVector(self.POINTS, "Points", ParameterVector.VECTOR_TYPE_POINT))
|
|
self.addParameter(ParameterTableField(self.CLASSFIELD, "Class field", self.POINTS))
|
|
self.addParameter(ParameterString(self.FIELD, "Count field name", "NUMPOINTS"))
|
|
self.addOutput(OutputVector(self.OUTPUT, "Result"))
|
|
|
|
def processAlgorithm(self, progress):
|
|
polyLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POLYGONS))
|
|
pointLayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.POINTS))
|
|
fieldName = self.getParameterValue(self.FIELD)
|
|
classFieldName = self.getParameterValue(self.CLASSFIELD)
|
|
|
|
polyProvider = polyLayer.dataProvider()
|
|
|
|
classFieldIndex = pointLayer.fieldNameIndex(classFieldName)
|
|
idxCount, fieldList = utils.findOrCreateField(polyLayer, polyLayer.pendingFields(), fieldName)
|
|
|
|
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fieldList.toList(),
|
|
polyProvider.geometryType(), polyProvider.crs())
|
|
|
|
spatialIndex = utils.createSpatialIndex(pointLayer)
|
|
|
|
ftPoint = QgsFeature()
|
|
outFeat = QgsFeature()
|
|
geom = QgsGeometry()
|
|
|
|
current = 0
|
|
hasIntersections = False
|
|
|
|
features = QGisLayers.features(polyLayer)
|
|
total = 100.0 / float(len(features))
|
|
for ftPoly in features:
|
|
geom = ftPoly.geometry()
|
|
attrs = ftPoly.attributes()
|
|
|
|
classes = []
|
|
hasIntersections = False
|
|
points = spatialIndex.intersects(geom.boundingBox())
|
|
if len(points) > 0:
|
|
hasIntersections = True
|
|
|
|
if hasIntersections:
|
|
for i in points:
|
|
request = QgsFeatureRequest().setFilterFid(i)
|
|
ftPoint = pointLayer.getFeatures(request).next()
|
|
tmpGeom = QgsGeometry(ftPoint.geometry())
|
|
if geom.contains(tmpGeom):
|
|
clazz = ftPoint.attributes()[classFieldIndex]
|
|
if not clazz in classes:
|
|
classes.append(clazz)
|
|
|
|
outFeat.setGeometry(geom)
|
|
if idxCount == len(attrs):
|
|
attrs.append(len(classes))
|
|
else:
|
|
attrs[idxCount] = len(classes)
|
|
outFeat.setAttributes(attrs)
|
|
writer.addFeature(outFeat)
|
|
|
|
current += 1
|
|
progress.setPercentage(current / total)
|
|
|
|
del writer
|