alluvial R package

You can install the stable version of alluvial from CRAN or the development version from GitHub.

From CRAN:

install.packages("alluvial")

From GitHub (Development version):

remotes::install_github("mbojan/alluvial", build_vignettes=TRUE)

The alluvial() function is used to create alluvial diagrams from categorical data. It uses base R graphics.

Note: The blocks argument is deprecated. Use the strata argument instead. The strata argument accepts:

• TRUE (or "box"): Displays categories as blocks.
• FALSE (or "stripes"): Displays categories as stripes.
• strata_bookends(): For bookend styles.

Example using datasets::Titanic data:

tit <- tibble::as_tibble(Titanic)

alluvial(
    select(tit, Survived, Sex, Age, Class),
    freq=tit$n,
    col = ifelse(tit$Survived == "Yes", "orange", "grey"),
    border = ifelse(tit$Survived == "Yes", "orange", "grey"),
    layer = tit$Survived != "Yes",
    alpha = 0.8,
    strata = FALSE
  )

The alluvial_ts() function is designed for multiple time series or cross-sectional data, such as tracking refugee flows over several years.

Example using alluvial::Refugees data:

set.seed(39) # for nice colours
cols <- hsv(h = sample(1:10/10), s = sample(3:12)/15, v = sample(3:12)/15)

alluvial_ts(Refugees, wave = .3, ygap = 5, col = cols, plotdir = 'centred', alpha=.9,
            grid = TRUE, grid.lwd = 5, xmargin = 0.2, lab.cex = .7, xlab = '',
            ylab = '', border = NA, axis.cex = .8, leg.cex = .7,
            leg.col='white', 
            title = "UNHCR-recognised refugees\nTop 10 countries (2003-13)\n")