QGIS API Documentation  3.10.0-A Coruña (6c816b4204)
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 
28 class QgsRasterInterface;
31 class QgsRectangle;
32 
34 
40 class 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 
135 Q_DECLARE_TYPEINFO( QgsReclassifyUtils::RasterClass, Q_MOVABLE_TYPE );
136 
137 
139 
140 #endif // QGSRECLASSIFYUTILS
141 
142 
A rectangle specified with double values.
Definition: qgsrectangle.h:41
Q_DECLARE_TYPEINFO(QgsMargins, Q_MOVABLE_TYPE)
Base class for providing feedback from a processing algorithm.
BoundsType
Handling for min and max bounds.
Raster values range container.
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
Base class for processing filters like renderers, reprojector, resampler etc.
Base class for raster data providers.