smoothout: Contour smoothing
In shapeR: Collection and Analysis of Otolith Shape Data

smoothout

R Documentation

Contour smoothing

Description

Remove high frequency pixel noise around the otolith outline

Usage

smoothout(object, n)

Arguments

`object`	A `shapeR` object
`n`	The number of iterations. The default value is 100.

Value

A shapeR object with smoothed otolith outlines in the slot outline.list

Author(s)

Lisa Anne Libungan

References

Haines, A.J., Crampton, J.S. (2000). Improvements to the method of Fourier shape analysis as applied in morphometric studies. Palaeontology 43: 765-783.

Claude, J. (2008) Morphometrics with R. Springer. 316 p.

Examples



data(shape)
shape = smoothout(shape,n=100)

# Plot smoothed outline on top of original outline for comparison
outline.org=shape@outline.list.org[["IC"]][["403_2"]]
outline=shape@outline.list[["IC"]][["403_2"]]
plot(outline.org$X,outline.org$Y,type='l',xlab="",ylab="",lwd=2,axes=FALSE)
lines(outline$X,outline$Y,col="red",lwd=2)
legend("bottomleft",c('Original','Smoothed'),lty=1,col=c('black','red'),lwd=2)

shapeR documentation built on Nov. 22, 2022, 1:07 a.m.