Internal helper to create a dataset for ggplot2 to highlight diagonals

Internal helper function to create a dataset for ggplot2 that can be used to highlight specific diagonals in a density matrix.

Usage

create_highlightDiagonalData(dat, highlight_diagonals)

Arguments

dat

Dataset with columns period and age and the main variable specified through argument y_var.

highlight_diagonals

Optional internal parameter which is only specified when plot_density is called from within plot_densityMatrix. See plot_densityMatrix for details.