mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-06 00:05:02 -05:00
76 lines
3.2 KiB
Python
76 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
UniqueValues.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__ = '$Format:%H$'
|
|
|
|
import codecs
|
|
|
|
from sextante.core.GeoAlgorithm import GeoAlgorithm
|
|
from sextante.core.QGisLayers import QGisLayers
|
|
from sextante.parameters.ParameterVector import ParameterVector
|
|
from sextante.parameters.ParameterTableField import ParameterTableField
|
|
from sextante.outputs.OutputHTML import OutputHTML
|
|
from sextante.outputs.OutputNumber import OutputNumber
|
|
|
|
class UniqueValues(GeoAlgorithm):
|
|
|
|
INPUT_LAYER = "INPUT_LAYER"
|
|
FIELD_NAME = "FIELD_NAME"
|
|
TOTAL_VALUES = "TOTAL_VALUES"
|
|
OUTPUT = "OUTPUT"
|
|
|
|
#===========================================================================
|
|
# def getIcon(self):
|
|
# return QtGui.QIcon(os.path.dirname(__file__) + "/icons/unique.png")
|
|
#===========================================================================
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = "List unique values"
|
|
self.group = "Vector table tools"
|
|
self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
|
|
self.addParameter(ParameterTableField(self.FIELD_NAME, "Targer field", self.INPUT_LAYER, ParameterTableField.DATA_TYPE_ANY))
|
|
self.addOutput(OutputHTML(self.OUTPUT, "Unique values"))
|
|
self.addOutput(OutputNumber(self.TOTAL_VALUES, "Total unique values"))
|
|
|
|
def processAlgorithm(self, progress):
|
|
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT_LAYER))
|
|
fieldName = self.getParameterValue(self.FIELD_NAME)
|
|
|
|
outputFile = self.getOutputValue(self.OUTPUT)
|
|
|
|
values = layer.uniqueValues(layer.fieldNameIndex(fieldName))
|
|
self.createHTML(outputFile, values)
|
|
self.setOutputValue(self.TOTAL_VALUES, len(values))
|
|
|
|
def createHTML(self, outputFile, algData):
|
|
f = codecs.open(outputFile, "w", encoding="utf-8")
|
|
f.write('<html><head>')
|
|
f.write('<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body>')
|
|
f.write("<p>Total unique values: " + str(len(algData)) + "</p>")
|
|
f.write("<p>Unique values:</p>")
|
|
f.write("<ul>")
|
|
for s in algData:
|
|
f.write("<li>" + unicode(s.toString()) + "</li>")
|
|
f.write("</ul></body></html>")
|
|
f.close()
|