Plot a Double-Histogram — plotDoubleHist • SomaPlotr

Plots two density histograms side-by-side.

Usage

plotDoubleHist(
  data,
  cols,
  label = "Group",
  x.lab = "value",
  binwidth = 0.05,
  main = NULL,
  outline = FALSE
)

Arguments

data: A 2-column data.frame of numeric data to be plotted as a paired density histogram. The column names of the data.frame are used as the group names for the plot.
cols: Character. A vector of colors for the groups/boxes. For plotDoubleHist(), must be length = 2.
label: Character. A label for the grouping variable.
x.lab: Character. Optional string for the x-axis. Otherwise one is automatically generated (default).
binwidth: Numeric. Set the bin width for the histogram bars. See geom_histogram().
main: Character. Main title for the plot. See ggtitle() for ggplot2 style graphics.
outline: Logical. Black and white outlines of the histograms.

Author

Stu Field

Examples

dat <- withr::with_seed(123, data.frame(a = rnorm(1000, 2, 0.3),
                                        b = rnorm(1000, 3, 0.3)))
plotDoubleHist(dat)

plotDoubleHist(dat, label = "Grouped By", main = "Two Distributions")

plotDoubleHist(dat, label = "Grouped By", main = "Black & White", outline = TRUE)

plotDoubleHist(dat, binwidth = 0.01)

plotDoubleHist(dat, binwidth = 0.01, outline = TRUE)