rNEF: Normalized elliptical Fourier analysis routine

In jinyung/otolith: Identification of fish otolith using digital images

Description

A wrapper functions using the codes from J Claude's book, for routine use to run normalized elliptical Fourier analysis.

Usage

rNEF(A, plotpca = FALSE, class, ...)

Arguments

A	p x k x n array of raw semilandmarks configurations
plotpca	logical. Whether to plot the PCA for quick preliminary view. Plot first 3 PCs
class	factor giving the species/grouping, used for plotting purpose, e.g. using sp value from routine1 or using the getclass function. Used only when plotpca=TRUE
...	other arguments passed to plotpca

Value

coeff	matrix of all harmonic coefficients
expvar	explained variation of the NEF harmonics (first harmonic is removed from the calculation, see reference)
size	size of the semi-major axis of the first fitting ellipse. See reference

References

Claude J. (2008). Morphometrics with R. Springer.

See Also

rGPA

jinyung/otolith documentation built on May 19, 2019, 10:36 a.m.