xline                package:funfits                R Documentation

_D_r_a_w _a _v_e_r_t_i_c_a_l _l_i_n_e

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

     xline(x, ...)

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

       x: Value on x axis specifying location of vertical line. 

     ...: Any ploting options for abline function. 

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

     plot(ozone$x[,2],ozone$y) # plot ozone longitude vs ozone value
     xline(42) # plots vertical line at longitude value of 42

