regr2.plot

0th

Percentile

3D plot of z against x and y, with regression plane fit and display of squared residuals.

3D plot of z against x and y, with regression plane fit and display of squared residuals.

Keywords
models, regression
Usage
regr2.plot(x, y, z,
           main.in="put a useful title here",
           resid.plot=FALSE,
           plot.base.plane=TRUE,
           plot.back.planes=TRUE,
           plot.base.points=FALSE,
           eye=NULL,                   ## S-Plus
           theta=0, phi=15, r=sqrt(3), ticktype="detailed", ## R
           ...)
Arguments
x,y,z
See#ifndef S-Plus persp. #endif #ifdef S-Plus persp. #endif
main.in
main title for plot.
resid.plot
Argument to resid.squares.
plot.base.plane, plot.back.planes, plot.base.points
Should these items be plotted?
eye
S-Plus only. See#ifndef S-Plus persp. #endif #ifdef S-Plus persp. #endif
theta, phi, r, ticktype
R only. See#ifndef S-Plus persp. #endif #ifdef S-Plus persp. #endif
...
Other arguments to persp.
Note

This plot is designed as a pedagogical example for introductory courses. When resid.plot=="square", then we actually see the set of squares for which the sum of their areas is minimized by the method of "least squares".

References

Heiberger, Richard M. and Holland, Burt (2004b). Statistical Analysis and Data Display: An Intermediate Course with Examples in S-Plus, R, and SAS. Springer Texts in Statistics. Springer. ISBN 0-387-40270-5. Smith, W. and Gonick, L. (1993). The Cartoon Guide to Statistics. HarperCollins.

See Also

resid.squares, regr1.plot

Aliases
  • regr2.plot
Examples
data(fat)
regr2.plot(fat[,"abdomin"], xlab="abdomin",
           fat[,"biceps"],  ylab="biceps",
           fat[,"bodyfat"], zlab="bodyfat",
           resid.plot="square",
           eye=c(335.5, 115.65, 171.9),   ## used only in S-Plus
           theta=140, phi=35, r=sqrt(15), ## used only in R
           box=is.R(),
           plot.back.planes=FALSE,
           main="Least-squares with two X-variables")
Documentation reproduced from package HH, version 3.1-25, License: GPL (>= 2)

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