catenary: Creates a catenary object

In jonotuke/catenary: Fits a Catenary to Given Points

Description

First constructor that takes c1, c2, lambda, x0 and x1 Second constructor takes endpoints and either length or gives natural or maximum catenary (one that just touches the ground)

Contains methods to fit catenary to observed points, also can compare to parabola.

Usage

catenary(c1 = 1, c2 = 0, lambda = 0, x0 = -1, x1 = 1,
  endpoints = NULL, L = NULL, type = "natural")

Arguments

c1	shape parameter
c2	x-location parameter
lambda	y-location parameter
x0	left point
x1	right point
endpoints	2 x 2 matrix or data frame with column x and y and rows left and right
L	length of catenary
type	max or natural if length not given

Value

an instance of catenary class

Author(s)

Jono Tuke, Matthew Roughan

Examples

cat1 <- catenary()
plot(cat1)
cat2 <- catenary(c1=1,c2=2,lambda=3,x0=0,x1=4)
plot(cat2)
x <- c(-1,1)
y <- c(2,2)
endpoints <- data.frame(x=x,y=y)
cat3 <- catenary(endpoints=endpoints,L=5)
plot(cat3)
cat4 <- catenary(endpoints=endpoints,type='natural')
plot(cat4)
cat5 <- catenary(endpoints=endpoints,type='max')
plot(cat5)

jonotuke/catenary documentation built on May 19, 2019, 8:36 p.m.