% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/ggInterval_corrplot.R
\name{ggInterval_corrplot}
\alias{ggInterval_corrplot}
\title{Correlation heatmap for interval-valued data}
\usage{
ggInterval_corrplot(
  data = NULL,
  method = c("centers", "B", "BD", "BG"),
  triangle = c("lower", "upper", "full"),
  showValues = TRUE,
  digits = 2,
  showLegend = TRUE
)
}
\arguments{
\item{data}{A ggInterval object. It can also be either an RSDA object or
a classical data frame, which will be automatically converted to ggInterval
data.}

\item{method}{Correlation method for interval-valued variables. It must be
one of \code{"centers"} (interval centers), \code{"B"} (Billard),
\code{"BD"} (Billard-Diday), or \code{"BG"} (Bertrand-Goupil).}

\item{triangle}{Which part of the symmetric correlation matrix to display.
It can be \code{"lower"}, \code{"upper"}, or \code{"full"}.}

\item{showValues}{Logical. If \code{TRUE}, print the correlation values in
each cell.}

\item{digits}{Number of digits used when \code{showValues = TRUE}.}

\item{showLegend}{Logical. If \code{TRUE}, display the fill legend.}
}
\value{
Return a ggplot2 object.
}
\description{
Visualize pairwise symbolic correlations between
interval-valued variables with a heatmap. This plot is especially useful
for summarizing multivariate dependence structures before more formal
modeling or dimension reduction.
}
\examples{
ggInterval_corrplot(facedata)

ggInterval_corrplot(facedata, method = "BG", triangle = "full")
}
\references{
Bertrand, Patrice and Goupil, Francoise (2000). Descriptive Statistics for
Symbolic Data. In Hans-Hermann Bock and Edwin Diday (eds.),
\emph{Analysis of Symbolic Data}, pp. 106--124. Berlin and Heidelberg:
Springer.

Billard, Lynne and Diday, Edwin (2006). \emph{Symbolic Data Analysis:
Conceptual Statistics and Data Mining}. Chichester, UK: John Wiley and Sons.

Billard, Lynne (2008). Sample covariance functions for complex quantitative
data. In \emph{Proceedings of the World IASC Conference}, pp. 157--163,
Yokohama, Japan.
}
