% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/performancePlot.R
\name{performancePlot}
\alias{performancePlot}
\alias{performancePlot,list-method}
\alias{performancePlot,ClassifyResult-method}
\title{Plot Performance Measures for Various Classifications}
\usage{
\S4method{performancePlot}{ClassifyResult}(results, ...)
\S4method{performancePlot}{list}(
results,
metric = "auto",
characteristicsList = list(x = "auto"),
aggregate = character(),
coloursList = list(),
alpha = 1,
orderingList = list(),
densityStyle = c("box", "violin"),
yLimits = NULL,
fontSizes = c(24, 16, 12, 12),
title = NULL,
margin = grid::unit(c(1, 1, 1, 1), "lines"),
rotate90 = FALSE,
showLegend = TRUE
)
}
\arguments{
\item{results}{A list of \code{\link{ClassifyResult}} objects.}
\item{...}{Not used by end user.}
\item{metric}{Default: \code{"auto"}. The name of the
performance measure or "auto". If the results are classification then
balanced accuracy will be displayed. Otherwise, the results would be survival risk
predictions and then C-index will be displayed. This is one of the names printed
in the Performance Measures field when a \code{\link{ClassifyResult}} object is
printed, or if none are stored, the performance metric will be calculated automatically.}
\item{characteristicsList}{A named list of characteristics. Each element's
name must be one of \code{"x"}, \code{"row"}, \code{"column"},
\code{"fillColour"}, or \code{"lineColour"}. The value of each element must be a
characteristic name, as stored in the \code{"characteristic"} column of the
results' characteristics table. Only \code{"x"} is mandatory. It is
\code{"auto"} by default, which will identify a characteristic that has a unique
value for each element of \code{results}. \code{"x"} represents a characteristic which will
form the x-axis of the plot. \code{"row"} and \code{"column"} each specify one characteristic
which will form the row facet and the column facet, respectively, of a facetted plot.}
\item{aggregate}{A character vector of the levels of
\code{characteristicsList['x']} to aggregate to a single number by taking
the mean. This is particularly meaningful when the cross-validation is
leave-k-out, when k is small.}
\item{coloursList}{A named list of plot aspects and colours for the aspects.
No elements are mandatory. If specified, each list element's name must be
either \code{"fillColours"} or \code{"lineColours"}. If a characteristic is
associated to fill or line by \code{characteristicsList} but this list is
empty, a palette of colours will be automatically chosen.}
\item{alpha}{Default: 1. A number between 0 and 1 specifying the transparency level of any fill.}
\item{orderingList}{An optional named list. Any of the variables specified
to \code{characteristicsList} can be the name of an element of this list and
the value of the element is the order in which the factors should be
presented in, in case alphabetical sorting is undesirable. Special values
\code{"performanceAscending"} and \code{"performanceDescending"} indicate that
the order of levels will be computed based on the median performance value of
the characteristic being sorted into ascending or descending order.}
\item{densityStyle}{Default: "box". Either \code{"violin"} for violin plot or
\code{"box"} for box plot. If cross-validation is not repeated, then a bar chart.}
\item{yLimits}{The minimum and maximum value of the performance metric to
plot.}
\item{fontSizes}{A vector of length 4. The first number is the size of the
title. The second number is the size of the axes titles. The third number
is the size of the axes values. The fourth number is the font size of the
titles of grouped plots, if any are produced. In other words, when
\code{rowVariable} or \code{columnVariable} are not \code{NULL}.}
\item{title}{An overall title for the plot.}
\item{margin}{The margin to have around the plot.}
\item{rotate90}{Logical. IF \code{TRUE}, the plot is horizontal.}
\item{showLegend}{If \code{TRUE}, a legend is plotted next to the plot. If
FALSE, it is hidden.}
}
\value{
An object of class \code{ggplot} and a plot on the current graphics
device, if \code{plot} is \code{TRUE}.
}
\description{
Draws a graphical summary of a particular performance measure for a list of
classifications
}
\details{
If there are multiple values for a performance measure in a single result
object, it is plotted as a violin plot, unless \code{aggregate} is
\code{TRUE}, in which case the all predictions in a single result object are
considered simultaneously, so that only one performance number is
calculated, and a barchart is plotted.
}
\examples{
predicted <- DataFrame(sample = sample(LETTERS[1:10], 80, replace = TRUE),
permutation = rep(1:2, each = 40),
class = factor(rep(c("Healthy", "Cancer"), 40)))
actual <- factor(rep(c("Healthy", "Cancer"), each = 5))
result1 <- ClassifyResult(DataFrame(characteristic = c("Data Set", "Selection Name", "Classifier Name",
"Cross-validation"),
value = c("Example", "t-test", "Differential Expression", "2 Permutations, 2 Folds")),
LETTERS[1:10], paste("Gene", 1:100), list(paste("Gene", 1:100), paste("Gene", c(10:1, 11:100)), paste("Gene", 1:100), paste("Gene", 1:100)),
list(paste("Gene", 1:3), paste("Gene", c(2, 5, 6)), paste("Gene", 1:4), paste("Gene", 5:8)),
list(function(oracle){}), NULL, predicted, actual)
result1 <- calcCVperformance(result1, "Macro F1")
predicted <- DataFrame(sample = sample(LETTERS[1:10], 80, replace = TRUE),
permutation = rep(1:2, each = 40),
class = factor(rep(c("Healthy", "Cancer"), 40)))
result2 <- ClassifyResult(DataFrame(characteristic = c("Data Set", "Selection Name", "Classifier Name",
"Cross-validation"),
value = c("Example", "Bartlett Test", "Differential Variability", "2 Permutations, 2 Folds")),
LETTERS[1:10], paste("Gene", 1:100), list(paste("Gene", 1:100), paste("Gene", c(10:1, 11:100)), paste("Gene", 1:100), paste("Gene", 1:100)),
list(c(1:3), c(4:6), c(1, 6, 7, 9), c(5:8)),
list(function(oracle){}), NULL, predicted, actual)
result2 <- calcCVperformance(result2, "Macro F1")
performancePlot(list(result1, result2), metric = "Macro F1",
title = "Comparison")
}
\author{
Dario Strbenac
}
