Tools for Modeling Rate-Dependent Hysteretic Processes and Ellipses

Fit, summarize and plot sinusoidal hysteretic processes using: two-step simple harmonic least squares, ellipse-specific non-linear least squares, the direct method, geometric least squares or linear least squares.


R Package for Modeling Rate-Dependent Hysteretic Processes and Ellipses.


CHANGES IN hysteresis VERSION 2.6


  • made adjustments for changes in car and knitr dependencies.

CHANGES IN hysteresis VERSION 2.5

CHANGES * removed nlrwr package dependency.

CHANGES IN hysteresis VERSION 2.0

CHANGES * "geometric" method added to fel. This method minimizes geometric error using a non-linear process.

Reference manual

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2.7 by Anne Parkhurst, 8 months ago

Browse source code at

Authors: Spencer Maynes , Fan Yang , and Anne Parkhurst

Documentation:   PDF Manual  

GPL (>= 2) license

Depends on car, msm, MASS

Suggests knitr, markdown

See at CRAN