rho_to_ab.RdHelper function, that should not be used outside the package. Computes x and y intercepts for a line given in polar coordinate representation. A line in polar coordinate representation is given by angle theta (with respect to the x-axis) and distance of the line to the origin rho.
rho_to_ab(rho = NULL, theta = NULL, df = NULL)
| rho | Numeric vector containing the shortest distance from the line to the origin |
|---|---|
| theta | Numeric vector containing the angle of the line from the positive x axis |
| df | Data frame containing output from a Hough transformation |
data frame with variables rho, theta, score (original data frame) expanded by yintercept, xintercept and slope.