QgsIDWInterpolator class
Inverse distance weight interpolator.
Contents
Base classes
- class QgsInterpolator
- Interface class for interpolations.
Constructors, destructors, conversion operators
-
QgsIDWInterpolator(const QList<QgsInterpolator::
LayerData>& layerData) - Constructor for QgsIDWInterpolator, with the specified layerData sources.
Public functions
- auto distanceCoefficient() const -> double
- Returns the distance coefficient, the parameter that sets how the values are weighted with distance.
- auto interpolatePoint(double x, double y, double& result, QgsFeedback* feedback = nullptr) -> int override
- Calculates interpolation value for map coordinates x, y.
- void setDistanceCoefficient(double coefficient)
- Sets the distance coefficient, the parameter that sets how the values are weighted with distance.
Function documentation
double QgsIDWInterpolator::
Returns the distance coefficient, the parameter that sets how the values are weighted with distance.
Smaller values mean sharper peaks at the data points. The default is a coefficient of 2.
Point values are weighted by 1 / ( distance ^ coefficient ).
int QgsIDWInterpolator::
Calculates interpolation value for map coordinates x, y.
| Parameters | |
|---|---|
| x | x-coordinate (in map units) |
| y | y-coordinate (in map units) |
| result | interpolation result |
| feedback | optional feedback object for progress and cancelation support |
| Returns | 0 in case of success |
void QgsIDWInterpolator::
Sets the distance coefficient, the parameter that sets how the values are weighted with distance.
Smaller values mean sharper peaks at the data points.
Point values are weighted by 1 / ( distance ^ coefficient ).