Generates an interactive corrgram programmed with the package shiny. It uses the package seriation for reordering, optimal leaf ordering ('OLO') and reordering based on principal components ('PCA'). If 'OLO' is selected, cluster lines can be drawn by selecting the number of clusters or a minimum correlation (see
varclust for details). A range of correlation can be chosen, where only pairs of variables with absolute correlation within the range are drawn with colored cells, otherwise the cells are colored white.
A data frame.
A shiny app object.
M. Friendly (2002) Corrgrams: Exploratory displays for correlation matrices The American Statistician 56(4), 316–324.
W. Chang, J. Cheng, J. Allaire, Y. Xie and J. McPherson (2016) shiny: Web Application Framework for R. https://cran.r-project.org/package=shiny.
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