Missing-value heatmap

A tile plot of where NAs fall: columns on the x-axis, rows on the y-axis, shaded by whether each cell is missing. For wide/tall data the rows are subsampled to max_rows so the plot stays legible.

Usage

plot_missing(df, max_rows = 500)

Arguments

df

A data frame.

max_rows

Maximum rows to display (subsampled if exceeded). Default 500.

Value

A ggplot2 object.

Examples

df <- data.frame(a = c(1, NA, 3), b = c(NA, "y", "z"))
plot_missing(df)