Plot results from (repeated) K-fold
cross-validation.
Usage
## S3 method for class 'cv'
plot(x,
method = c("bwplot", "densityplot", "xyplot", "dotplot"),
...)
## S3 method for class 'cvSelect'
plot(x,
method = c("bwplot", "densityplot", "xyplot", "dotplot"),
...)
Arguments
x
an object inheriting from class "cv" or
"cvSelect" that contains cross-validation
results.
method
a character string specifying the type of
plot. For the "cv" method, possible values are
"bwplot" to create a box-and-whisker plot via
bwplot (the default), or
"densityplot" to create a kernel density plot via
densityplot. Note that
those plots are only meaningful for results from repeated
cross-validation. For the "cvSelect" method,
there are two additional possibilities: "xyplot"
to plot the (average) results for each model via
xyplot, or
"dotplot" to create a similar dot plot via
dotplot. The default is
to use "bwplot" for results from repeated
cross-validation and "xyplot" otherwise. In any
case, partial string matching allows supply abbreviations
of the accepted values.
...
additional arguments to be passed down.
Details
For objects with multiple columns of cross-validation
results, conditional plots are produced.
Value
An object of class "trellis" is returned
invisibly. The
update method can
be used to update components of the object and the
print method
(usually called by default) will plot it on an
appropriate plotting device.