digit.curves.p: Creates homogeneous level curve for every model

In Alowis/mobirep: Models Bivariate Dependence and Produces Bivariate Return Periods

Creates homogeneous level curve for every model

Description

Creates homogeneous level curve for every model (adapted from the function digit.curves of the geomorph R package)

Usage

digit.curves.p(start, curve, nPoints, closed = TRUE)

Arguments

start	A numeric vector of x,y, coordinates for the landmark defining the start of the curve
curve	A matrix (p x k) of 2D coordinates for a set of ordered points defining a curve
nPoints	Numeric how many semilandmarks to place equidistantly along the curve (not counting beginning and end points)
closed	Logical Whether the curve is closed (TRUE) or open (FALSE)

Value

A matrix of coordinates for nPoints equally spaced semilandmarks sampled along the curve

References

Bookstein, F. J. 1997 Landmark Methods for Forms without Landmarks: Morphometrics of Group Differences in Outline Shape. Medical Image Analysis 1(3):225-243.

Rohlf, F.J., 2015. The tps series of software. Hystrix 26(1):9-12.

See Also

digit.curves

Examples

# Curve  creation
x<-seq(0,30, length=200)
y=90-x^2
curve=data.frame(x,y)

# Homogenization of the number of points
ltl<-digit.curves.p(start=curve[1,], curve=as.matrix(curve), nPoints=98, closed = FALSE)
plot(ltl)

Alowis/mobirep documentation built on April 21, 2024, 7:51 p.m.