ellipse-package           package:ellipse           R Documentation

_F_u_n_c_t_i_o_n_s _f_o_r _d_r_a_w_i_n_g _e_l_l_i_p_s_e_s _a_n_d _e_l_l_i_p_s_e-_l_i_k_e _c_o_n_f_i_d_e_n_c_e
_r_e_g_i_o_n_s

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

     This package contains various routines for drawing ellipses and
     ellipse-like confidence regions, implementing the plots described
     in Murdoch and Chow (1996).

     There are also routines implementing the profile plots described
     in Bates and Watts (1988).

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

     There are three groups of routines in the ellipse package.  The
     first consists of those involved with 'plotcorr', which implements
     the plots described in Murdoch and Chow (1996). These display
     correlations using ellipses, whose shape is that of the contours
     of a bivariate normal distribution with matching correlation.

     The second group implements a version of the profile plots
     described in Bates and Watts (1988); see 'ellipse.profile' and
     'pairs.profile'.

     The last group provide the basis for the others, drawing ellipses
     based on various S objects, including scalar correlations,
     covariance matrices 'arima', 'lm', and 'nls' fits:  see 'ellipse'.

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

     Duncan Murdoch <murdoch@stats.uwo.ca> and E. D. Chow (porting to R
     by Jesus M. Frias Celayeta <iosu@bureau.ucc.ie>)

     Maintainer: Duncan Murdoch <murdoch@stats.uwo.ca>

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

     Bates, D.M. and Watts, D.G. (1988). Nonlinear Regression Analysis
     and its Applications.  Wiley.

     Murdoch, D.J. and Chow, E.D. (1996). A graphical display of large
     correlation matrices. The American Statistician 50, 178-180.

