QGIS API Documentation 3.38.0-Grenoble (exported)
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qgsclassificationcustom.h
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1/***************************************************************************
2 qgsclassificationcustom.h
3 ---------------------
4 begin : September 2019
5 copyright : (C) 2019 by Denis Rouzaud
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGSCLASSIFICATIONCUSTOM_H
17#define QGSCLASSIFICATIONCUSTOM_H
18
20
21
29{
30 public:
32
33 QgsClassificationMethod *clone() const override;
34 QString name() const override;
35 QString id() const override;
36
37 bool valuesRequired() const override {return false;}
38
39 static const QString METHOD_ID;
40
41 private:
42 QList<double> calculateBreaks( double &minimum, double &maximum,
43 const QList<double> &values, int nclasses, QString &error ) override;
44};
45
46#endif // QGSCLASSIFICATIONCUSTOM_H
QgsClassificationCustom is a dummy implementation of QgsClassification which does not compute any bre...
bool valuesRequired() const override
Returns if the method requires values to calculate the classes If not, bounds are sufficient.
QgsClassificationMethod is an abstract class for implementations of classification methods.
virtual QgsClassificationMethod * clone() const =0
Returns a clone of the method.
virtual QString id() const =0
The id of the method as saved in the project, must be unique in registry.
virtual QString name() const =0
The readable and translate name of the method.