akima: 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.

Install the latest version of this package by entering the following in R:
install.packages("akima")
AuthorHiroshi Akima [aut, cph] (Fortran code (TOMS 760, 761, 697 and 433)), Albrecht Gebhardt [aut, cre, cph] (R port (interp* functions), bicubic* functions), Thomas Petzold [ctb, cph] (aspline function), Martin Maechler [ctb, cph] (interp2xyz function + enhancements), YYYY Association for Computing Machinery, Inc. [cph] (covers code from TOMS 760, 761, 697 and 433)
Date of publication2016-12-20 01:40:25
MaintainerAlbrecht Gebhardt <albrecht.gebhardt@aau.at>
LicenseACM | file LICENSE
Version0.6-2

View on CRAN

Files

configure.ac
src
src/idsfft.f
src/idptli.f
src/idgrid.f
src/idtang.f
src/tripack.f
src/idptip.f
src/idcldp.f
src/Makevars.in
src/idxchg.f
src/idpdrv.f
src/akima761.f
src/bilinear.f
src/init.c
src/akima697.f
src/idlctn.f
src/akima760.f
src/akima433.f
src/akima.h
src/idbvip.f
NAMESPACE
data
data/akima760.rda
data/franke.rda
data/akima.rda
R
R/bicubic.R R/bilinear.R R/interpp.new.R R/interp.old.R R/interpp.R R/aspline.R R/interp.new.R R/interp2xyz.R R/interpp.old.R R/interp.R R/franke.R
MD5
README
DESCRIPTION
configure
ChangeLog
man
man/aspline.Rd man/interp.old.Rd man/bilinear.Rd man/franke.data.Rd man/bicubic.Rd man/interpp.Rd man/interp2xyz.Rd man/interpp.old.Rd man/akima.Rd man/bilinear.grid.Rd man/bicubic.grid.Rd man/interp.Rd man/akima760.Rd
cleanup
tools
tools/acinclude.m4
LICENSE

Questions? Problems? Suggestions? or email at ian@mutexlabs.com.

Please suggest features or report bugs with the GitHub issue tracker.

All documentation is copyright its authors; we didn't write any of that.