Gilles Sadowski a écrit :
> Hello.
> 
> This is in reference to the second feature request in issue
>   https://issues.apache.org/jira/browse/MATH-353
> 
> If I'm not mistaken, this interpolation algorithm requires a regular grid of
> samples.
> The method "interpolate" in interface "MultivariateRealInterpolator" cannot
> enforce this as the sample coordinates must be specified independently for
> each sample; they are passed in a single variable:
>   void interpolate(double[][] samples, double[] values)
> e.g. in 2D, samples[i][0] is the x-coordinate,
>             samples[i][1] is the y-coordinate,
>             values[i] is f(samples[i][0], samples[i][1])
> 
> For a grid in 2D, there should be:
>   void interpolate(double[] x, double[] y, double[][] values)
> i.e. x[i] is the i-th grid x-coordinate
>      y[j] is the j-th grid y-coordinate
>      both x and y must be sorted in increasing order
>      values[i][j] is f(x[i], y[j])
> 
> Should we create a "BivariateRealGridInterpolator" interface?

This is a good idea.

Luc

> 
> Best,
> Gilles
> 
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