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96 lines
3.1 KiB
Python
96 lines
3.1 KiB
Python
"""
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***************************************************************************
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TextToFloat.py
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---------------------
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Date : May 2010
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Copyright : (C) 2010 by Michael Minn
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Email : pyqgis at michaelminn 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__ = "Michael Minn"
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__date__ = "May 2010"
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__copyright__ = "(C) 2010, Michael Minn"
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from qgis.PyQt.QtCore import QMetaType
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from qgis.core import (
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QgsField,
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QgsProcessing,
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QgsProcessingParameterField,
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QgsProcessingFeatureSource,
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)
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from processing.algs.qgis.QgisAlgorithm import QgisFeatureBasedAlgorithm
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class TextToFloat(QgisFeatureBasedAlgorithm):
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FIELD = "FIELD"
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def group(self):
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return self.tr("Vector table")
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def groupId(self):
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return "vectortable"
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def __init__(self):
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super().__init__()
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self.field_name = None
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self.field_idx = -1
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def initParameters(self, config=None):
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self.addParameter(
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QgsProcessingParameterField(
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self.FIELD,
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self.tr("Text attribute to convert to float"),
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parentLayerParameterName="INPUT",
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type=QgsProcessingParameterField.DataType.String,
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)
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)
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def name(self):
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return "texttofloat"
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def displayName(self):
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return self.tr("Text to float")
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def outputName(self):
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return self.tr("Float from text")
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def inputLayerTypes(self):
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return [QgsProcessing.SourceType.TypeVector]
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def outputFields(self, inputFields):
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self.field_idx = inputFields.lookupField(self.field_name)
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if self.field_idx >= 0:
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inputFields[self.field_idx] = QgsField(
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self.field_name, QMetaType.Type.Double, "", 24, 15
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)
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return inputFields
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def prepareAlgorithm(self, parameters, context, feedback):
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self.field_name = self.parameterAsString(parameters, self.FIELD, context)
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return True
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def supportInPlaceEdit(self, layer):
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return False
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def sourceFlags(self):
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return QgsProcessingFeatureSource.Flag.FlagSkipGeometryValidityChecks
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def processFeature(self, feature, context, feedback):
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value = feature[self.field_idx]
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try:
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if "%" in value:
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feature[self.field_idx] = float(value.replace("%", "")) / 100.0
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else:
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feature[self.field_idx] = float(value)
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except:
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feature[self.field_idx] = None
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return [feature]
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