cenxyplot                package:NADA                R Documentation

_P_r_o_d_u_c_e_s _a _c_e_n_s_o_r_e_d _x-_y _s_c_a_t_t_e_r _p_l_o_t

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

     Draws a x-y scatter plot with censored values represented by
     dashed lines spanning the from the censored threshold to zero.

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

         cenxyplot(x, xcen, y, ycen, log="", lty="dashed", ...)

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

       x: A numeric vector of observations. 

    xcen: A  logical vector indicating TRUE where an observation in x
          is censored (a less-than value) and FALSE otherwise.   

       y: A numeric vector of observations. 

    ycen: A logical vector indicating TRUE where an observation in y is
          censored (a less-than value) and FALSE otherwise.   

     log: A character string which contains '"x"' if the x axis is to
          be logarithmic, '"y"' if the y axis is to be logarithmic and
          '"xy"' or '"yx"' if both axes are to be logarithmic.  Default
          is '""', or both axis linear. 

     lty: The line type of the lines representing the censored-data
          ranges. 

     ...: Additional items that get passed to 'plot'. 

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

     Lopaka(Rob) Lee <rclee@usgs.gov>

     Dennis Helsel <dhelsel@usgs.gov>

_R_e_f_e_r_e_n_c_e_s:

     Helsel, Dennis R. (2005).  Nondectects and Data Analysis;
     Statistics for censored environmental data.  John Wiley and Sons,
     USA, NJ.

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

         data(DFe)
         with(DFe, cenxyplot(Year, YearCen, Summer, SummerCen))

