annulus: Annulus

In drastega/specklestar: Reduction of Speckle Data from BTA 6-m Telescope

Annulus

Description

Get points from annulus on matrix

Usage

annulus(im, R, dR = 2, center = c(nrow(im)/2, ncol(im)/2))

Arguments

im	matrix.
R	radius of annulus.
dR	annulus width in pixels (default is 2 px).
center	point of center c(x, y) (default is center of matrix c(nrow(im) / 2, ncol(im) / 2)).

Value

Vector with points of annulus.

Examples

m <- matrix(1:512, nrow = 512, ncol = 512)
annulus_points <- annulus(m, R = 57, dR = 1, center = c(100, 100))

drastega/specklestar documentation built on Nov. 20, 2023, 8:21 p.m.