circle               package:calibrate               R Documentation

_D_r_a_w _a _c_i_r_c_l_e

_D_e_s_c_r_i_p_t_i_o_n:

     'circle' draws a circle in an existing plot.

_U_s_a_g_e:

     circle(radius)

_A_r_g_u_m_e_n_t_s:

  radius: the radius of the circle 

_V_a_l_u_e:

     NULL

_A_u_t_h_o_r(_s):

     Jan Graffelman jan.graffelman@upc.edu

_E_x_a_m_p_l_e_s:

        set.seed(123)
        X <- matrix(rnorm(20),ncol=2)
        plot(X[,1],X[,2])
        circle()

