QGIS API Documentation  2.9.0-Master
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 : tim@linfiniti.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 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 
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  bandNumber = 1;
63  }
64 
66  bool contains( const QgsRasterBandStats &s ) const
67  {
68  return ( s.bandNumber == bandNumber &&
69  s.extent == extent &&
70  s.width == width &&
71  s.height == height &&
72  s.statsGathered == ( statsGathered & s.statsGathered ) );
73  }
74 
77 
79  // TODO: check if no data are excluded in stats calculation
81 
84  double maximumValue;
85 
88  double minimumValue;
89 
91  double mean;
92 
94  double range;
95 
97  double stdDev;
98 
101 
103  double sum;
104 
106  double sumOfSquares;
107 
109  int width;
110 
112  int height;
113 
116 };
117 #endif
A rectangle specified with double values.
Definition: qgsrectangle.h:35
double sum
The sum of all cells in the band.
int height
Number of rows used to calc statistics.
int bandNumber
The gdal band number (starts at 1)
double maximumValue
The maximum cell value in the raster band.
bool contains(const QgsRasterBandStats &s) const
QgsRectangle extent
Extent used to calc statistics.
double stdDev
The standard deviation of the cell values.
The RasterBandStats struct is a container for statistics about a single raster band.
double mean
The mean cell value for the band.
qgssize elementCount
The number of not no data cells in the band.
int statsGathered
Collected statistics.
unsigned long long qgssize
qgssize is used instead of size_t, because size_t is stdlib type, unknown by SIP, and it would be har...
Definition: qgis.h:446
double range
The range is the distance between min & max.
double minimumValue
The minimum cell value in the raster band.
int max(int a, int b)
Definition: util.h:87
double sumOfSquares
The sum of the squares.
int width
Number of columns used to calc statistics.