Scatter3DDialog            package:Rcmdr            R Documentation

_R_c_m_d_r _3_D _S_c_a_t_t_e_r_p_l_o_t _D_i_a_l_o_g

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

     This dialog sets up a call to the 'scatter3d' function to draw a
     three-dimensional scatterplot.

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

     The explanatory variables provide the "horizontal" and
     "out-of-screen" axes of the scatterplot, the response variable
     provides the "vertical" axis.

     Data points are represented as spheres or points, depending upon
     the number of observations. 

     Several regression surfaces can be plotted: a linear least-squares
     surface; a full quadratic least-squares surface with squared and
     cross-product terms; a "smooth" regression surface - either a
     smoothing spline, if no degrees of freedom are specified (in which
     case the 'gam' function selects the df by generalized cross
     validation), or a fixed-df regression spline; an
     additive-regression surface (also fit by 'gam'), with either
     smoothing spline or regression spline components (again selected
     according to the specification of degrees of freedom). If only one
     surface is fit, then residuals are plotted as red (negative) and
     green (positive) lines from the surface to the points.

     You can specify a factor defining groups by pressing the _Plot by
     groups_ button. A separate surface or set of surfaces is plotted
     for each level of the groups factor. These surfaces can be
     constrained to be parallel.

     The completed plot can be manipulated with the mouse: Click, hold,
     drag the left mouse button to rotate the display; click, hold, and
     drag the right button to zoom in and out.

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

     John Fox jfox@mcmaster.ca

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

     'scatter3d', 'rgl.open', 'gam'

