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, ...)

Arguments

a

an object of class RobReg

b

not used.

h

not supported.

v

not supported.

reg

not supported.

coef

not supported.

untf

not supported.

...

Arguments to be passed to methods, such as graphical parameters (see par).