isobole                 package:drc                 R Documentation

_C_r_e_a_t_i_n_g _i_s_o_b_o_l_o_g_r_a_m_s

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

     'isobole' displays isobole based on EC/ED50 estimates from a
     log-logistic model. Additionally isoboles determined by the
     concentration addition model, Hewlett's model and Voelund's model
     can be added to the plot.

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

     isobole(object1, object2, exchange = 1, cifactor = 2, ename = "e", xaxis = "100", xlab, ylab, xlim, ylim, ...)

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

 object1: object of class 'drc' where EC/ED50 parameters vary freely.

 object2: object of class 'drc' where EC/ED50 parameters vary according
          to Hewlett's model.

   ename: character string. The name of the EC/ED50 variable.

   xaxis: character string. Is the mixture "0:100" or "100:0" on the x
          axis?

exchange: numeric. The exchange rate between the two substances.

cifactor: numeric. The factor to be used in the confidence intervals. 
          Default is 2, but 1 has been used in publications.

    xlab: an optional label for the x axis.

    ylab: an optional label for the y axis.

    xlim: a numeric vector of length two, containing the lower and
          upper limit for the x axis.

    ylim: a numeric vector of length two, containing the lower and
          upper limit for the y axis.

     ...: Additional graphical parameters.

_D_e_t_a_i_l_s:

     The model fits to be supplied as first and optionally second
     argument are obtained using 'mixture' and 'drm'.

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

     No value is returned. Only used for the side effect: the
     isobologram shown.

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

     Christian Ritz

_S_e_e _A_l_s_o:

     The examples in 'acidiq', 'glymet' and 'mecter'.

