## org.apache.commons.math3.analysis.interpolation Interface BivariateGridInterpolator

All Known Implementing Classes:
BicubicSplineInterpolator, SmoothingPolynomialBicubicSplineInterpolator

`public interface BivariateGridInterpolator`

Interface representing a bivariate real interpolating function where the sample points must be specified on a regular grid.

Version:
\$Id: BivariateGridInterpolator.java 1455194 2013-03-11 15:45:54Z luc \$

Method Summary
` BivariateFunction` ```interpolate(double[] xval, double[] yval, double[][] fval)```
Compute an interpolating function for the dataset.

Method Detail

### interpolate

```BivariateFunction interpolate(double[] xval,
double[] yval,
double[][] fval)
throws NoDataException,
DimensionMismatchException,
NonMonotonicSequenceException,
NumberIsTooSmallException```
Compute an interpolating function for the dataset.

Parameters:
`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.
`fval` - The values of the interpolation points on all the grid knots: `fval[i][j] = f(xval[i], yval[j])`.
Returns:
a function which interpolates the dataset.
Throws:
`NoDataException` - if any of the arrays has zero length.
`DimensionMismatchException` - if the array lengths are inconsistent.
`NonMonotonicSequenceException` - if the array is not sorted.
`NumberIsTooSmallException` - if the number of points is too small for the order of the interpolation