QGIS API Documentation 3.27.0-Master (1d7a28cfd2)
qgsreclassifyutils.h
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1/***************************************************************************
2 qgsreclassifyutils.h
3 ---------------------
4 begin : June, 2018
5 copyright : (C) 2018 by Nyall Dawson
6 email : nyall dot dawson 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 QGSRECLASSIFYUTILS
19#define QGSRECLASSIFYUTILS
20
21#define SIP_NO_FILE
22
23#include "qgis_sip.h"
24#include "qgis_analysis.h"
25#include "qgsrasterrange.h"
26#include <QVector>
27
31class QgsRectangle;
32
34
40class ANALYSIS_EXPORT QgsReclassifyUtils
41{
42
43 public:
44
48 class RasterClass : public QgsRasterRange
49 {
50 public:
51
53 RasterClass() = default;
54
59 RasterClass( double minValue, double maxValue, QgsRasterRange::BoundsType type, double value )
60 : QgsRasterRange( minValue, maxValue, type )
61 , value( value )
62 {}
63
65 double value = 0;
66 };
67
71 static void reportClasses( const QVector< RasterClass > &classes, QgsProcessingFeedback *feedback );
72
77 static void checkForOverlaps( const QVector< RasterClass > &classes, QgsProcessingFeedback *feedback );
78
100 static void reclassify( const QVector< RasterClass > &classes,
101 QgsRasterInterface *sourceRaster,
102 int band,
103 const QgsRectangle &extent,
104 int sourceWidthPixels,
105 int sourceHeightPixels,
106 QgsRasterDataProvider *destinationRaster,
107 double destNoDataValue, bool useNoDataForMissingValues,
108 QgsProcessingFeedback *feedback = nullptr );
109
119 static double reclassifyValue( const QVector< RasterClass > &classes, double input, bool &reclassified )
120 {
121 reclassified = false;
122 for ( const QgsReclassifyUtils::RasterClass &c : classes )
123 {
124 if ( c.contains( input ) )
125 {
126 reclassified = true;
127 return c.value;
128 }
129 }
130 return input;
131 }
132
133};
134
135Q_DECLARE_TYPEINFO( QgsReclassifyUtils::RasterClass, Q_MOVABLE_TYPE );
136
137
139
140#endif // QGSRECLASSIFYUTILS
141
142
Base class for providing feedback from a processing algorithm.
Base class for raster data providers.
Base class for processing filters like renderers, reprojector, resampler etc.
Raster values range container.
BoundsType
Handling for min and max bounds.
A rectangle specified with double values.
Definition: qgsrectangle.h:42
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
Q_DECLARE_TYPEINFO(QgsMargins, Q_MOVABLE_TYPE)