GenerateCircle: Generating circle on sphere
In spherepc: Spherical Principal Curves

Description Usage Arguments Details Value Author(s) See Also Examples

This function makes a circle on the unit 2-sphere.

1	GenerateCircle(center, radius, T = 1000)

`center`	center of circle with spatial locations (longitude and latitude denoted by degrees).
`radius`	radius of circle. It should be in [0, pi].
`T`	the number of points that make up circle. The points in circle are equally spaced. The default is 1000.

This function makes a circle on the unit 2-sphere.

matrix consisting of spatial locations with two columns.

Jongmin Lee

PrincipalCircle.

library(rgl)
library(sphereplot)
library(geosphere)
circle <- GenerateCircle(c(0, 0), 1)
# plot (It requires to load 'rgl', 'sphereplot', and 'geosphere' R package.)
sphereplot::rgl.sphgrid()
sphereplot::rgl.sphpoints(circle[, 1], circle[, 2], radius = 1, col = "blue", size = 12)