harm.contrib: Harmonic contribution to shape

In Momocs: Morphometrics using R

Harmonic contribution to shape

Description

Calculates contribution of harmonics to shape. The amplitude of every coefficients of a given harmonic is multiplied by the coefficients provided and the resulting shapes are reconstructed and plotted. Naturally, only works on Fourier-based methods.

Usage

hcontrib(Coe, ...)

## S3 method for class 'OutCoe'
hcontrib(
  Coe,
  id,
  harm.r,
  amp.r = c(0, 0.5, 1, 2, 5, 10),
  main = "Harmonic contribution to shape",
  xlab = "Harmonic rank",
  ylab = "Amplification factor",
  ...
)

Arguments

Coe	a Coe object (either OutCoe or (soon) OpnCoe)
...	additional parameter to pass to coo_draw
id	the id of a particular shape, otherwise working on the meanshape
harm.r	range of harmonics on which to explore contributions
amp.r	a vector of numeric for multiplying coefficients
main	a title for the plot
xlab	a title for the x-axis
ylab	a title for the y-axis

Value

a plot

See Also

Other Coe_graphics: boxplot.OutCoe()

Examples

data(bot)
bot.f <- efourier(bot, 12)
hcontrib(bot.f)
hcontrib(bot.f, harm.r=3:10, amp.r=1:8, col="grey20",
   main="A huge panel")

Momocs documentation built on Nov. 13, 2023, 5:07 p.m.