QGIS API Documentation 3.37.0-Master (49cede7946b)
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qgsalgorithmrasterfrequencybycomparisonoperator.h
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1/***************************************************************************
2 qgsalgorithmrasterfrequencybycomparisonoperator.h
3 ---------------------
4 begin : June 2020
5 copyright : (C) 2020 by Clemens Raffler
6 email : clemens dot raffler at gmail dot com
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSALGORITHMRASTERFREQUENCYBYCOMPARISON_H
19#define QGSALGORITHMRASTERFREQUENCYBYCOMPARISON_H
20
21#define SIP_NO_FILE
22
23#include "qgis_sip.h"
24#include "qgsapplication.h"
26#include "qgsrasterprojector.h"
28
30
31class QgsRasterFrequencyByComparisonOperatorBase : public QgsProcessingAlgorithm
32{
33 public:
34 QgsRasterFrequencyByComparisonOperatorBase() = default;
35 void initAlgorithm( const QVariantMap &configuration = QVariantMap() ) override;
36 QString group() const override;
37 QString groupId() const override;
38
39 protected:
40 bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
41 QVariantMap processAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
42 virtual int applyComparisonOperator( double value, std::vector<double>cellValueStack ) = 0;
43
44 private:
45 std::unique_ptr< QgsRasterInterface > mInputValueRasterInterface;
46 int mInputValueRasterBand = 1;
47 std::vector< QgsRasterAnalysisUtils::RasterLogicInput > mInputs;
48 bool mIgnoreNoData = false;
49 double mNoDataValue = -9999;
50 int mLayerWidth = 0;
51 int mLayerHeight = 0;
52 QgsRectangle mExtent;
54 double mRasterUnitsPerPixelX = 0;
55 double mRasterUnitsPerPixelY = 0;
56};
57
58class QgsRasterFrequencyByEqualOperatorAlgorithm : public QgsRasterFrequencyByComparisonOperatorBase
59{
60 public:
61 QgsRasterFrequencyByEqualOperatorAlgorithm() = default;
62 QString name() const override;
63 QString displayName() const override;
64 QStringList tags() const override;
65 QString shortHelpString() const override;
66 QgsRasterFrequencyByEqualOperatorAlgorithm *createInstance() const override SIP_FACTORY;
67
68 protected:
69 int applyComparisonOperator( double searchValue, std::vector<double>cellValueStack ) override;
70};
71
72class QgsRasterFrequencyByGreaterThanOperatorAlgorithm : public QgsRasterFrequencyByComparisonOperatorBase
73{
74 public:
75 QgsRasterFrequencyByGreaterThanOperatorAlgorithm() = default;
76 QString name() const override;
77 QString displayName() const override;
78 QStringList tags() const override;
79 QString shortHelpString() const override;
80 QgsRasterFrequencyByGreaterThanOperatorAlgorithm *createInstance() const override SIP_FACTORY;
81
82 protected:
83 int applyComparisonOperator( double value, std::vector<double>cellValueStack ) override;
84};
85
86class QgsRasterFrequencyByLessThanOperatorAlgorithm : public QgsRasterFrequencyByComparisonOperatorBase
87{
88 public:
89 QgsRasterFrequencyByLessThanOperatorAlgorithm() = default;
90 QString name() const override;
91 QString displayName() const override;
92 QStringList tags() const override;
93 QString shortHelpString() const override;
94 QgsRasterFrequencyByLessThanOperatorAlgorithm *createInstance() const override SIP_FACTORY;
95
96 protected:
97 int applyComparisonOperator( double value, std::vector<double>cellValueStack ) override;
98};
99
101
102#endif // QGSALGORITHMRASTERFREQUENCYBYCOMPARISON_H
103
This class represents a coordinate reference system (CRS).
Abstract base class for processing algorithms.
virtual QString group() const
Returns the name of the group this algorithm belongs to.
virtual bool prepareAlgorithm(const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback)
Prepares the algorithm to run using the specified parameters.
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
virtual QVariantMap processAlgorithm(const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback)=0
Runs the algorithm using the specified parameters.
virtual void initAlgorithm(const QVariantMap &configuration=QVariantMap())=0
Initializes the algorithm using the specified configuration.
Contains information about the context in which a processing algorithm is executed.
Base class for providing feedback from a processing algorithm.
A rectangle specified with double values.
#define SIP_FACTORY
Definition qgis_sip.h:76