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Momocs (version 0.1-03)

Outline: Ptolemy: Methods for Function Ptolemy

Description

A method for Coo object to displays Ptolemaic ellipses which illustrates intuitively the principle behing elliptical Fourier analysis.

Arguments

References

This method has been inspired by the figures found in the followings papers. Kuhl FP, Giardina CR. 1982. Elliptic Fourier features of a closed contour. Computer Graphics and Image Processing 18: 236-258. Crampton JS. 1995. Elliptical Fourier shape analysis of fossil bivalves: some practical considerations. Lethaia 28: 179-186.

See Also

An intuitive explanation of elliptic Fourier analysis can be found in the Details section of the efourier function.

Examples

Run this code
data(bot)
Ptolemy(bot, 1)

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