/usr/include/qgis/qgsidwinterpolator.h is in libqgis-dev 1.7.4+1.7.5~20120320-1.1+b1.
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qgsidwinterpolator.h
--------------------
begin : March 10, 2008
copyright : (C) 2008 by Marco Hugentobler
email : marco dot hugentobler at karto dot baug dot ethz dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSIDWINTERPOLATOR_H
#define QGSIDWINTERPOLATOR_H
#include "qgsinterpolator.h"
class ANALYSIS_EXPORT QgsIDWInterpolator: public QgsInterpolator
{
public:
QgsIDWInterpolator( const QList<LayerData>& layerData );
~QgsIDWInterpolator();
/**Calculates interpolation value for map coordinates x, y
@param x x-coordinate (in map units)
@param y y-coordinate (in map units)
@param result out: interpolation result
@return 0 in case of success*/
int interpolatePoint( double x, double y, double& result );
void setDistanceCoefficient( double p ) {mDistanceCoefficient = p;}
private:
QgsIDWInterpolator(); //forbidden
/**The parameter that sets how the values are weighted with distance.
Smaller values mean sharper peaks at the data points. The default is a
value of 2*/
double mDistanceCoefficient;
};
#endif
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