plot.profileModel plots the profiles contained in the profiled
object. pairs.profileModel is a diagnostic tool that plots
pairwise profile traces.
# S3 method for profileModel
plot(x, cis = NULL, signed = FALSE, interpolate = TRUE,
n.interpolations = 100, print.grid.points = FALSE,
title = NULL, ...)# S3 method for profileModel
pairs(x, colours = 2:3, title=NULL, ...)
a "profileModel" object.
the confidence intervals resulted from
profConfint(prof). The default is NULL where no
intervals are plotted. Only used in plot.profileModel.
if TRUE the signed square roots of the values of
the profiled objective are plotted. The default is
FALSE. Available only in plot.profileModel.
if TRUE spline interpolation is used in
order to get a smooth plot of the profiled objective. If FALSE
the points that are contained in the "profileModel" object are simply
joint by segments. The default is TRUE. Available only in
plot.profileModel.
The number of interpolations to take place in
the profile range of each parameter. The default value is 100. It is
only used when interpolate=TRUE. Available only in
plot.profileModel.
logical indicating whether the points
contained in the "profileModel" object should be printed along
with the objective. The default is FALSE. Available only in
plot.profileModel.
A vector of two elements indicating the colours to be used
for plotting pairwise profile traces. Available only in
pairs.profileModel.
A character string to be displayed at the top of the
resultant plotting device. The default is NULL where nothing is
printed.
further arguments passed to or from other methods.
pairs.profileModel is a minor modification of
pairs.profile in MASS library. The modification was done
under the GPL licence 2 or greater and after the permission of the
authors, in order to comply with objects of class
"profileModel". As in the description of pairs.profile
in Venables and Ripley (2002b), pairs.profileModel shows the
lines that would join up the points where the contours have
horizontal and vertical tangents, respectively, and the fine `hairs'
cutting the lines in the pairs plot are an indication of those
tangents.
The pair plots should only be used for diagnostic purposes.
Venables, W. N. and Ripley, B. D. (2002a). Modern applied statistics with S (4th Edition). Springer.
Venables, W. N. and Ripley, B. D. (2002b). Statistics complements to modern applied statistics with S (4th Edition). http://www.stats.ox.ac.uk/pub/MASS4/VR4stat.pdf.
Chambers, J. M. and Hastie, T. J. (1992) Statistical Models in S. Chapman \& Hall/CRC.
# NOT RUN {
# see example in 'confintModel'.
# }
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