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# caret.R: plotmo functions for caret objects
#
# TODO Currently only caret "train" objects have explicit support.
# sanity check that object a caret train object
# (since "train" is a quite generic name)
check.is.caret.train.object <- function(object)
{
class <- class(object)[1]
stopifnot.string(class)
mod <- object[["finalModel"]]
# S3 models are lists, S4 models aren't lists.
# Plotmo support S4 models only if they are wrapped in a caret model.
# Example S4 model: kernlab::ksvm created with train(..., method="svmRadial", ...).
if(class != "train" || is.null(mod) || (!is.list(mod) && !isS4(mod)))
stop0("unrecognized \"train\" object ",
"(was expecting a train object from the caret package)")
}
plotmo.prolog.train <- function(object, object.name, trace, ...)
{
check.is.caret.train.object(object)
# call plotmo.prolog for the finalModel for its side effects
# (e.g. may attach plotmo.importance to the finalModel)
finalModel <- try(plotmo.prolog(object$finalModel, object.name, trace, ...),
silent=trace < 2)
is.err <- is.try.err(finalModel)
trace1(trace, "plotmo.prolog(object$finalModel) %s\n",
if(is.err) "failed, continuing anyway" else "succeeded (caret model)")
if(!is.err)
object$finalModel <- finalModel
object
}
plotmo.singles.train <- function(object, x, nresponse, trace, all1, ...)
{
check.is.caret.train.object(object)
singles <- try(plotmo.singles(object$finalModel, x, nresponse, trace, all1, ...),
silent=trace < 2)
is.err <- is.try.err(singles)
trace2(trace, "plotmo.singles(object$finalModel) %s\n",
if(is.err) "failed" else "succeeded")
if(is.err)
plotmo.singles.default(object, x, nresponse, trace, all1, ...)
else
singles
}
plotmo.pairs.train <- function(object, x, nresponse, trace, all2, ...)
{
check.is.caret.train.object(object)
pairs <- try(plotmo.pairs(object$finalModel, x, nresponse, trace, all2, ...),
silent=trace < 2)
is.err <- is.try.err(pairs)
trace2(trace, "plotmo.pairs(object$finalModel) %s\n",
if(is.err) "failed" else "succeeded")
if(is.err)
plotmo.pairs.default(object, x, nresponse, trace, all2, ...)
else
pairs
}
# determine "type" arg for predict()
plotmo.type.train <- function(object, ..., TRACE)
{
"raw"
# check.is.caret.train.object(object)
# trace <- TRACE
# type <- try(plotmo.type(object$finalModel, ..., TRACE=TRACE), silent=trace < 2)
# is.err <- is.try.err(type)
# trace2(trace, "plotmo.type(object$finalModel) %s\n",
# if(is.err) "failed" else "succeeded")
# if(is.err)
# "raw"
# else
# type
}
# determine "type" arg for residuals()
plotmo.residtype.train <- function(object, ..., TRACE)
{
"raw"
# check.is.caret.train.object(object)
# trace <- TRACE
# type <- try(plotmo.residtype(object$finalModel, ...), silent=trace < 2)
# is.err <- is.try.err(type)
# trace2(trace, "plotmo.residtype(object$finalModel) %s\n",
# if(is.err) "failed" else "succeeded")
# if(is.err)
# "raw"
# else
# type
}
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