Nothing

```
#' Create a sequence of points on a circle
#'
#' This is a helper function that creates a sequence of points on a circle of
#' radius \code{r} as a resolution determined by \code{n}. It is not intended
#' for direct calling, and is used by the ellipse plotting function
#' \code{\link{addEllipse}}. NB not an exported function.
#'
#' @param n the number of points to create around the circle. Defaults to 100.
#' @param r the radius of the circle to create.
#'
#' @return A 2 x n matrix of x and y coordinates of points on a circle.
#'
# function to generate a circle of data points which
# can be transformed to form an ellipse. Intended for
# generating various SIBER ellipses.
# Not intended for calling on its own.
genCircle = function(n = 100, r) {
# a uniform series of angles from 0 -> 2*pi
theta = seq(0, 2*pi, length = n)
# x and y coordinates on the circle
x = r*cos(theta)
y = r*sin(theta)
# return the coordinates
return(cbind(x,y))
}
```

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