# Scatter3DDialog

0th

Percentile

##### Rcmdr 3D Scatterplot Dialog

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

Keywords
hplot
##### Details

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.

scatter3d, rgl.open, gam