plot.monomvn {monomvn} | R Documentation |
Functions for visualizing the output from bmonomvn
,
particularly the posterior standard deviation estimates of the mean
vector and covariance matrix, and samples from the solution to a
Quadratic Program
## S3 method for class 'monomvn': plot(x, which=c("mu", "S", "QP"), xaxis=c("numna", "index"), main=NULL, uselog=FALSE, ...)
x |
a "monomvn" -class object that must be named x
for generic plotting |
which |
determines the parameter whose standard deviation
to be visualized: the mean vector ("mu" for sqrt($mu.var) );
the covariance matrix ("S" for sqrt($S.var) ),
which results in
an image plot; or the distribution of solutions
$W to a Quadratic Program that may be obtained by
supplying QP = TRUE as input to bmonomvn |
xaxis |
indicates how x-axis (or x- and y-axis in the case
of which = "S" ) should be displayed. The default option
"numna" shows the (ordered) number of missing entries
(NA s) in the corresponding column, whereas "index"
simply uses the column index; see details below |
main |
optional text to be added to the main title of the plots;
the default of NULL causes the automatic generation of a
title |
uselog |
a logical which, when TRUE , causes the log
of the standard deviation to be plotted instead |
... |
passed to plot.default |
Currently, this function only provides a visualization of the
posterior standard deviation estimates of the parameters, and
the distributions of samples from the posterior of the solution
to a specified Quadratic Program. Therefore
it only works on the output from bmonomvn
All types of visualization (specified by which
) are presented
in the order of the number of missing entries in the columns of the
data passed as input to bmonomvn
.
In the case of which = "mu"
this means that y-values are presented in the order x$o
, where
the x-axis is either 1:length(x$o)
in the case of
xaxis = "index"
, or x$na[x$o]
in the case of xaxis
= "numna"
. When which = "S"
is given the resulting
image
plot is likewise ordered by x$o
where the
x- and y-axis are as above, except that in the case
where xaxis = "numna"
the repeated counts of NA
s are
are adjusted by small increments so that x and y arguments to
image
are distinct. Since a boxplot
is
used when which = "QP"
it may be that xaxis = "index"
is preferred
The only output of this function is beautiful plots
Robert B. Gramacy bobby@statslab.cam.ac.uk
http://www.statslab.cam.ac.uk/~bobby/monomvn.html
bmonomvn
, print.monomvn
,
summary.monomvn