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115 lines
3.8 KiB
Python
115 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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general.py
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---------------------
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Date : April 2013
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Copyright : (C) 2013 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'April 2013'
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__copyright__ = '(C) 2013, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import *
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from processing.core.QGisLayers import QGisLayers
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from processing.core.Processing import Processing
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from processing.parameters.ParameterSelection import ParameterSelection
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from processing.gui.Postprocessing import Postprocessing
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def alglist(text=None):
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s=""
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for provider in Processing.algs.values():
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sortedlist = sorted(provider.values(), key= lambda alg: alg.name)
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for alg in sortedlist:
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if text == None or text.lower() in alg.name.lower():
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s+=(alg.name.ljust(50, "-") + "--->" + alg.commandLineName() + "\n")
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print s
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def algoptions(name):
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alg = Processing.getAlgorithm(name)
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if alg != None:
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s =""
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for param in alg.parameters:
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if isinstance(param, ParameterSelection):
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s+=param.name + "(" + param.description + ")\n"
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i=0
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for option in param.options:
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s+= "\t" + str(i) + " - " + str(option) + "\n"
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i+=1
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print(s)
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else:
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print "Algorithm not found"
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def alghelp(name):
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alg = Processing.getAlgorithm(name)
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if alg != None:
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print(str(alg))
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algoptions(name)
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else:
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print "Algorithm not found"
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def runalg(algOrName, *args):
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alg = Processing.runAlgorithm(algOrName, None, *args)
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if alg is not None:
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return alg.getOutputValuesAsDictionary()
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def runandload(name, *args):
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return Processing.runAlgorithm(name, Postprocessing.handleAlgorithmResults, *args)
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def extent(layers):
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first = True
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for layer in layers:
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if not isinstance(layer, (QgsRasterLayer, QgsVectorLayer)):
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layer = QGisLayers.getObjectFromUri(layer)
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if layer is None:
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continue
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if first:
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xmin = layer.extent().xMinimum()
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xmax = layer.extent().xMaximum()
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ymin = layer.extent().yMinimum()
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ymax = layer.extent().yMaximum()
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else:
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xmin = min(xmin, layer.extent().xMinimum())
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xmax = max(xmax, layer.extent().xMaximum())
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ymin = min(ymin, layer.extent().yMinimum())
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ymax = max(ymax, layer.extent().yMaximum())
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first = False
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if first:
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return "0,0,0,0"
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else:
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return str(xmin) + "," + str(xmax) + "," + str(ymin) + "," + str(ymax)
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def getfromname(name):
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layers = QGisLayers.getAllLayers()
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for layer in layers:
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if layer.name() == name:
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return layer
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def getfromuri(uri):
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return QGisLayers.getObjectFromUri(uri, True)
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def getobject(uriorname):
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ret = getfromname(uriorname)
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if ret is None:
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ret = getfromuri(uriorname)
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return ret
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def load(path):
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'''Loads a layer into QGIS'''
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return QGisLayers.load(path)
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