(Q611705)

English

bicubic interpolation

extension of cubic spline interpolation

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multivariate interpolation

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Interpolation-bicubic.svg
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Bicubic interpolation on the square {\displaystyle [0,4]\times [0,4]} {\displaystyle [0,4]\times [0,4]} consisting of 25 unit squares patched together. Bicubic interpolation as per Matplotlib's implementation. Colour indicates function value. The black dots are the locations of the prescribed data being interpolated. Note how the color samples are not radially symmetric. (English)

Бикубическая интерполяция для значений на поверхности (значения в чёрных точках). Видно, что цветовые участки не симметричны относительно чёрных точек (Russian)

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defining formula