QGIS API Documentation 3.39.0-Master (3783037d301)
Loading...
Searching...
No Matches
qgsslopefilter.h
Go to the documentation of this file.
1/***************************************************************************
2 qgsslopefilter.h - description
3 --------------------------------
4 begin : August 7th, 2009
5 copyright : (C) 2009 by Marco Hugentobler
6 email : marco dot hugentobler at karto dot baug dot ethz dot ch
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 QGSSLOPEFILTER_H
19#define QGSSLOPEFILTER_H
20
21#include "qgsderivativefilter.h"
22#include "qgis_analysis.h"
23
28class ANALYSIS_EXPORT QgsSlopeFilter: public QgsDerivativeFilter
29{
30 public:
31 QgsSlopeFilter( const QString &inputFile, const QString &outputFile, const QString &outputFormat );
32
33 float processNineCellWindow( float *x11, float *x21, float *x31,
34 float *x12, float *x22, float *x32,
35 float *x13, float *x23, float *x33 ) override;
36
37
38#ifdef HAVE_OPENCL
39 private:
40
41 virtual const QString openClProgramBaseName() const override
42 {
43 return QStringLiteral( "slope" );
44 }
45#endif
46
47};
48
49#endif // QGSSLOPEFILTER_H
Adds the ability to calculate derivatives in x- and y-directions.
float processNineCellWindow(float *x11, float *x21, float *x31, float *x12, float *x22, float *x32, float *x13, float *x23, float *x33) override=0
Calculates output value from nine input values.
Calculates slope values in a window of 3x3 cells based on first order derivatives in x- and y- direct...