akima


Data taken from a study of waveform distortion in electronic circuits.


datasets

Akima

Program uses method of polynomial of variable degrees to interpolate gridded data preserving monotonicity and/or convexity or none. Method is implemented for univariate and bivariate cases. If values of derivatives are provided, spline will fix them,if not program will estimate them numerically. Package written purely in R.

Szymon Sacher

spsi

Shape-Preserving Uni-Variate and Bi-Variate Spline Interpolation

akima function

The format is:
 num [1:11, 1:9] 58.2 37.2 22.4 21.8 16.8 12 7.4 3.2 0 0 ...

Format

Akima, H; 'A Method of Bivariate Interpolation and Smooth Surface Fitting Based on Local
Procedures', Comm. ACM, 17, 1974, pp 26-27

akima: Wave distortions data.

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Examples