Add fitted line to a plot. This is overloaded function for robust regression methods from package depthproc.
# S4 method for RobReg
abline(a = NULL, b = NULL, h = NULL, v = NULL,
reg = NULL, coef = NULL, untf = FALSE, ...)an object of class RobReg
not used.
not supported.
not supported.
not supported.
not supported.
not supported.
Arguments to be passed to methods, such as graphical parameters (see par).