QGIS API Documentation 3.99.0-Master (2fe06baccd8)
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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
27{
28 public:
30
31 std::unique_ptr< QgsClassificationMethod > clone() const override;
32 QString name() const override;
33 QString id() const override;
34
35 bool valuesRequired() const override {return false;}
36
37 static const QString METHOD_ID;
38
39 private:
40 QList<double> calculateBreaks( double &minimum, double &maximum,
41 const QList<double> &values, int nclasses, QString &error ) override;
42};
43
44#endif // QGSCLASSIFICATIONCUSTOM_H
bool valuesRequired() const override
Returns if the method requires values to calculate the classes If not, bounds are sufficient.
virtual QString id() const =0
The id of the method as saved in the project, must be unique in registry.
virtual std::unique_ptr< QgsClassificationMethod > clone() const =0
Returns a clone of the method.
virtual QString name() const =0
The readable and translate name of the method.
QgsClassificationMethod(MethodProperties properties=NoFlag, int codeComplexity=1)
Creates a classification method.