Quantum GIS API Documentation
1.8
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Calculates total curvature as described by Wilson, Gallant (2000): terrain analysis. More...
#include <qgstotalcurvaturefilter.h>
Public Member Functions | |
QgsTotalCurvatureFilter (const QString &inputFile, const QString &outputFile, const QString &outputFormat) | |
~QgsTotalCurvatureFilter () | |
Protected Member Functions | |
float | processNineCellWindow (float *x11, float *x21, float *x31, float *x12, float *x22, float *x32, float *x13, float *x23, float *x33) |
Calculates total curvature from nine input values. |
Calculates total curvature as described by Wilson, Gallant (2000): terrain analysis.
Definition at line 24 of file qgstotalcurvaturefilter.h.
QgsTotalCurvatureFilter::QgsTotalCurvatureFilter | ( | const QString & | inputFile, |
const QString & | outputFile, | ||
const QString & | outputFormat | ||
) |
Definition at line 20 of file qgstotalcurvaturefilter.cpp.
Definition at line 26 of file qgstotalcurvaturefilter.cpp.
float QgsTotalCurvatureFilter::processNineCellWindow | ( | float * | x11, |
float * | x21, | ||
float * | x31, | ||
float * | x12, | ||
float * | x22, | ||
float * | x32, | ||
float * | x13, | ||
float * | x23, | ||
float * | x33 | ||
) | [protected, virtual] |
Calculates total curvature from nine input values.
The input values and the output value can be equal to the nodata value if not present or outside of the border. Must be implemented by subclasses
Implements QgsNineCellFilter.
Definition at line 31 of file qgstotalcurvaturefilter.cpp.
References QgsNineCellFilter::mCellSizeX, QgsNineCellFilter::mCellSizeY, QgsNineCellFilter::mInputNodataValue, and QgsNineCellFilter::mOutputNodataValue.