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qgsrasterbandstats.h
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1 /***************************************************************************
2  qgsrasterbandstats.h - description
3  -------------------
4  begin : Fri Jun 28 2002
5  copyright : (C) 2005 by T.Sutton
6  email : [email protected]
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 QGSRASTERBANDSTATS
19 #define QGSRASTERBANDSTATS
20 
21 #include <QString>
22 #include <QVector>
23 
24 #include <limits>
25 
26 #include "qgscolorrampshader.h"
27 #include "qgsrectangle.h"
28 
33 class CORE_EXPORT QgsRasterBandStats
34 {
35  public:
36  enum Stats
37  {
38  None = 0,
39  Min = 1,
40  Max = 1 << 1,
41  Range = 1 << 2,
42  Sum = 1 << 3,
43  Mean = 1 << 4,
44  StdDev = 1 << 5,
45  SumOfSquares = 1 << 6,
46  All = Min | Max | Range | Sum | Mean | StdDev | SumOfSquares
47  };
48 
49  QgsRasterBandStats()
50  {
51  statsGathered = None;
52  minimumValue = std::numeric_limits<double>::max();
53  maximumValue = -std::numeric_limits<double>::max();
54  range = 0.0;
55  mean = 0.0;
56  sumOfSquares = 0.0;
57  stdDev = 0.0;
58  sum = 0.0;
59  elementCount = 0;
60  width = 0;
61  height = 0;
62  }
63 
65  bool contains( const QgsRasterBandStats &s ) const
66  {
67  return ( s.bandNumber == bandNumber &&
68  s.extent == extent &&
69  s.width == width &&
70  s.height == height &&
71  s.statsGathered == ( statsGathered & s.statsGathered ) );
72  }
73 
75  int bandNumber;
76 
78  // TODO: check if no data are excluded in stats calculation
79  qgssize elementCount;
80 
83  double maximumValue;
84 
87  double minimumValue;
88 
90  double mean;
91 
93  double range;
94 
96  double stdDev;
97 
99  int statsGathered;
100 
102  double sum;
103 
105  double sumOfSquares;
106 
108  int width;
109 
111  int height;
112 
114  QgsRectangle extent;
115 };
116 #endif
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