mirror of
https://github.com/qgis/QGIS.git
synced 2025-04-23 00:03:02 -04:00
95 lines
3.7 KiB
Python
95 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
SelectByLocation.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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__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.QtCore import *
|
|
from qgis.core import *
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.parameters.ParameterSelection import ParameterSelection
|
|
from processing.parameters.ParameterVector import ParameterVector
|
|
from processing.outputs.OutputVector import OutputVector
|
|
from processing.tools import dataobjects, vector
|
|
|
|
|
|
class SelectByLocation(GeoAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
INTERSECT = 'INTERSECT'
|
|
METHOD = 'METHOD'
|
|
OUTPUT = 'OUTPUT'
|
|
|
|
METHODS = ['creating new selection', 'adding to current selection',
|
|
'removing from current selection']
|
|
|
|
|
|
def defineCharacteristics(self):
|
|
self.allowOnlyOpenedLayers = True
|
|
self.name = 'Select by location'
|
|
self.group = 'Vector selection tools'
|
|
self.addParameter(ParameterVector(self.INPUT, 'Layer to select from',
|
|
[ParameterVector.VECTOR_TYPE_ANY]))
|
|
self.addParameter(ParameterVector(self.INTERSECT,
|
|
'Additional layer (intersection layer)',
|
|
[ParameterVector.VECTOR_TYPE_ANY]))
|
|
self.addParameter(ParameterSelection(self.METHOD,
|
|
'Modify current selection by', self.METHODS, 0))
|
|
self.addOutput(OutputVector(self.OUTPUT, 'Selection', True))
|
|
|
|
def processAlgorithm(self, progress):
|
|
filename = self.getParameterValue(self.INPUT)
|
|
inputLayer = dataobjects.getObjectFromUri(filename)
|
|
method = self.getParameterValue(self.METHOD)
|
|
filename = self.getParameterValue(self.INTERSECT)
|
|
selectLayer = dataobjects.getObjectFromUri(filename)
|
|
|
|
oldSelection = set(inputLayer.selectedFeaturesIds())
|
|
index = vector.spatialindex(inputLayer)
|
|
|
|
geom = QgsGeometry()
|
|
selectedSet = []
|
|
current = 0
|
|
features = vector.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)
|