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java.lang.Objectorg.apache.commons.math.analysis.interpolation.SmoothingBicubicSplineInterpolator
public class SmoothingBicubicSplineInterpolator
Generates a bicubic interpolation function. Before interpolating, smoothing of the input data is performed using splines. See Handbook on splines for the user, ISBN 084939404X, chapter 2.
Constructor Summary | |
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SmoothingBicubicSplineInterpolator()
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Method Summary | |
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BivariateRealFunction |
interpolate(double[] xval,
double[] yval,
double[][] zval)
Computes an interpolating function for the data set. |
private int |
nextIndex(int i,
int max)
Compute the next index of an array, clipping if necessary. |
private int |
previousIndex(int i)
Compute the previous index of an array, clipping if necessary. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public SmoothingBicubicSplineInterpolator()
Method Detail |
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public BivariateRealFunction interpolate(double[] xval, double[] yval, double[][] zval) throws MathException, java.lang.IllegalArgumentException
interpolate
in interface BivariateRealGridInterpolator
xval
- all the x-coordinates of the interpolation points, sorted
in increasing order.yval
- all the y-coordinates of the interpolation points, sorted
in increasing order.zval
- the values of the interpolation points on all the grid knots:
zval[i][j] = f(xval[i], yval[j])
MathException
- if arguments violate assumptions made by the
interpolation algorithm
java.lang.IllegalArgumentException
private int nextIndex(int i, int max)
i
is larger than or equal to 0}.
i
- Indexmax
- Upper limit of the array
private int previousIndex(int i)
i
is smaller than the size of the array.
i
- Index
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