Interpolation Utilities

A variety of 1-D interpolation utilities

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Cite As

Joe Henning (2026). Interpolation Utilities (https://www.mathworks.com/matlabcentral/fileexchange/36800-interpolation-utilities), MATLAB Central File Exchange. Retrieved .

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General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.41.0

Updated cubicfarrow.m, lfindiff.m, sincint.m

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1.40.0

updated header comments

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1.39.0

added minimaxrat.m

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1.38.0

Added output to minimaxpoly.m

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1.37.0

Simplified minimaxpoly.m

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1.36.0

fixed minmaxpoly.m and cleanup

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1.35.0

fixed nargin in minimaxpoly

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1.34.0

removed unnecessary variable printout in schwerner.m

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1.33.0

added analyticint.m, hilbint.m, and references to help sections
fixed baryinv.m, bulirschstoer.m, thiele.m

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1.32.0

bug fix for stineman.m

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1.31.0

added cubicfarrow.m

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1.30.0

Added barylag.m, constint.m, cspline.m, linint.m, minmaxpoly.m, polycof.m
Removed safif.m

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1.29.0

Updated bulirschstoer.m

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1.28.0

Corrected mqsline.m and added bulirschstoer.m, hermitediv.m, qspline.m

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1.27.0

Added ratint.m and thiele.m for rational polynomial interplation

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1.26.0

Added steffen.m and stineman.m for monotonic interpolation

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1.25.0

Changed kernel tolerance in schwerner.m

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1.24.0

Added boundary conditions to helper function in newtint.m

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1.22.0

Added fractint.m and safif.m and added a fractional delay filter to interpdct.m

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1.21.0

Modified window condition in sincint.m

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1.20.0

Added expint.m; added second derivative calculations to lagint.m and hermint.m

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1.19.0

added expint.m

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1.18.0

added mqspline.m and harmonic mean monotone options

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1.16.0

Updated output arguments when error conditions occur

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1.15.0

updated monotone condition in chermite.m

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1.14.0

updated trigint.m to handle an even number of datapoints

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1.13.0

updated trigint.m

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1.12.0

added comment to said.m

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1.11.0

Added said.m for piecewise Said interpolation

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1.9.0

updated trigint.m

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1.8.0

updated epsilon computations

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1.7.0

Added finite difference function to rchermite.m

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1.6.0

Updated sincint.m

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1.2.0

Modified sincdint.m and sincint.m and added trigint.m

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1.1.0

Changed the finite difference calculation in chermite.m
Added a septic hermite interpolator, shermite.m

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1.0.0

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