iplotCorr: Image of correlation matrix with linked scatterplot

In qtlcharts: Interactive Graphics for QTL Experiments

Image of correlation matrix with linked scatterplot

Description

Creates an interactive graph with an image of a correlation matrix linked to underlying scatterplots.

Usage

iplotCorr(
  mat,
  group = NULL,
  rows = NULL,
  cols = NULL,
  reorder = FALSE,
  corr = NULL,
  scatterplots = TRUE,
  chartOpts = NULL,
  digits = 5
)

Arguments

mat	Data matrix (individuals x variables)
group	Optional vector of groups of individuals (e.g., a genotype)
rows	Selected rows of the correlation matrix to include in the image. Ignored if corr is provided.
cols	Selected columns of the correlation matrix to include in the image. Ignored if corr is provided.
reorder	If TRUE, reorder the variables by clustering. Ignored if corr is provided as a subset of the overall correlation matrix
corr	Correlation matrix (optional).
scatterplots	If FALSE, don't have the heat map be linked to scatterplots.
chartOpts	A list of options for configuring the chart (see the coffeescript code). Each element must be named using the corresponding option.
digits	Round data to this number of significant digits before passing to the chart function. (Use NULL to not round.)

Details

corr may be provided as a subset of the overall correlation matrix for the columns of mat. In this case, the reorder, rows and cols arguments are ignored. The row and column names of corr must match the names of some subset of columns of mat.

Individual IDs are taken from rownames(mat); they must match names(group).

Value

An object of class htmlwidget that will intelligently print itself into HTML in a variety of contexts including the R console, within R Markdown documents, and within Shiny output bindings.

See Also

iheatmap(), scat2scat(), iplotCurves()

Examples

data(geneExpr)

iplotCorr(geneExpr$expr, geneExpr$genotype, reorder=TRUE,
          chartOpts=list(cortitle="Correlation matrix",
                         scattitle="Scatterplot"))

# use Spearman's correlation
corr <- cor(geneExpr$expr, method="spearman", use="pairwise.complete.obs")
# order by hierarchical clustering
o <- hclust(as.dist(1-corr))$order

iplotCorr(geneExpr$expr[,o], geneExpr$genotype, corr=corr[o,o],
          chartOpts=list(cortitle="Spearman correlation",
                         scattitle="Scatterplot"))

qtlcharts documentation built on June 19, 2026, 5:07 p.m.