# akima v0.6-2

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## Interpolation of Irregularly and Regularly Spaced Data

Several cubic spline interpolation methods of H. Akima for irregular and regular gridded data are available through this package, both for the bivariate case (irregular data: ACM 761, regular data: ACM 760) and univariate case (ACM 433 and ACM 697). Linear interpolation of irregular gridded data is also covered by reusing D. J. Renkas triangulation code which is part of Akimas Fortran code. A bilinear interpolator for regular grids was also added for comparison with the bicubic interpolator on regular grids.

## Functions in akima

 Name Description interp Gridded Bivariate Interpolation for Irregular Data bilinear.grid Bilinear Interpolation for Data on a Rectangular grid interp.old Gridded Bivariate Interpolation for Irregular Data bicubic Bivariate Interpolation for Data on a Rectangular grid bilinear Bilinear Interpolation for Data on a Rectangular grid franke.data Test datasets from Franke for interpolation of scattered data aspline Univariate Akima interpolation bicubic.grid Bicubic Interpolation for Data on a Rectangular grid interp2xyz From interp() Result, Produce 3-column Matrix interpp.old Pointwise Bivariate Interpolation for Irregular Data interpp Pointwise Bivariate Interpolation for Irregular Data akima760 Sample data from Akima's Bicubic Spline Interpolation code (TOMS 760) akima Waveform Distortion Data for Bivariate Interpolation No Results!