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Add marimekko plot #2

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1 change: 1 addition & 0 deletions NAMESPACE
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# Generated by roxygen2: do not edit by hand

export(barmekko)
export(marimekko)
59 changes: 59 additions & 0 deletions R/marimekko.R
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#' Create a marimekko plot.
#'
#' A 100\% stacked bar chart with variable widths.
#'
#' @param data A data frame.
#' @param x A categorical variable defining the width categories.
#' @param fill A categorical variable defining the stacked segments.
#' @param width A numeric variable defining the bar widths.
#' @param values A boolean indicating whether to show percent labels in bars.
#' @return A marimekko constructed with ggplot2.
#' @export
#' @examples
#' library(ggplot2)
#' df <- data.frame(
#' region = rep(c('East', 'West'), each = 2),
#' result = rep(c('Good', 'Bad'), 2),
#' share = c(60, 40, 80, 20),
#' sales = c(300, 300, 200, 200)
#' )
#' marimekko(df, region, result, sales)
marimekko <- function(data, x, fill, width, values = FALSE) {
df <- data
xlabel <- as.character(substitute(x))
filllabel <- as.character(substitute(fill))
xval <- as.character(eval(substitute(x), df))
fillval <- as.character(eval(substitute(fill), df))
widthval <- eval(substitute(width), df)

x_levels <- unique(xval)
width_map <- tapply(widthval, xval, function(z) z[1])
widths <- as.numeric(width_map[x_levels])
pos <- positions(widths)

tbl <- as.data.frame(table(x = xval, fill = fillval), stringsAsFactors = FALSE)
tbl$prop <- tbl$Freq / ave(tbl$Freq, tbl$x, FUN = sum)
tbl$width <- width_map[tbl$x]
tbl$pos <- pos[match(tbl$x, x_levels)]
tbl$label_y <- ave(tbl$prop, tbl$x, FUN = function(z) cumsum(z) - z/2)

p <- suppressWarnings(
ggplot2::ggplot(tbl) +
ggplot2::geom_bar(
ggplot2::aes(x = pos, y = prop, width = width, fill = fill),
stat = "identity"
) +
ggplot2::scale_x_continuous(labels = x_levels, breaks = pos) +
ggplot2::xlab(xlabel) +
ggplot2::ylab("Proportion") +
ggplot2::guides(fill = ggplot2::guide_legend(title = filllabel))
)
if (values) {
labs <- round(tbl$prop * 100, 1)
p + ggplot2::geom_text(
ggplot2::aes(x = pos, y = label_y, label = labs), size = 3
)
} else {
p
}
}
2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -82,5 +82,5 @@ bmx + theme(axis.text.x = element_text(angle = 90, hjust = 1))

### Appendix

- This package originally included a marimekko function as well, but the latter was discovered to be well covered in [other](https://CRAN.R-project.org/package=ggmosaic/vignettes/ggmosaic.html) [packages](https://www.semanticscholar.org/paper/Product-Plots-Wickham-Hofmann/0598a59354cb96161d68dab91fb0de21fb8671fd/figure/6), so it was removed to simplify maintenance
- The package now includes `marimekko()` to create 100% stacked mekko charts
- While the barmekko is a ggplot object, your mileage may vary when attempting operations that normally would work on a ggplot object, as the data frame is deconstructed in the process of creating the graph
35 changes: 35 additions & 0 deletions man/marimekko.Rd
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5 changes: 2 additions & 3 deletions vignettes/mekko-vignette.Rmd
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Expand Up @@ -91,6 +91,5 @@ bmx + theme(axis.text.x = element_text(angle = 90, hjust = 1))

### Appendix

* This package originally included a marimekko function as well, but the latter
was discovered to be well covered in [other](https://CRAN.R-project.org/package=ggmosaic/vignettes/ggmosaic.html) [packages](https://www.semanticscholar.org/paper/Product-Plots-Wickham-Hofmann/0598a59354cb96161d68dab91fb0de21fb8671fd/figure/6), so it was removed to simplify maintenance
* While the barmekko is a ggplot object, your mileage may vary when attempting operations that normally would work on a ggplot object, as the data frame is deconstructed in the process of creating the graph
* The package now includes `marimekko()` to create 100% stacked mekko charts
* While the barmekko is a ggplot object, your mileage may vary when attempting operations that normally would work on a ggplot object, as the data frame is deconstructed in the process of creating the graph
2 changes: 1 addition & 1 deletion vignettes/mekko-vignette.md
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Expand Up @@ -82,5 +82,5 @@ bmx + theme(axis.text.x = element_text(angle = 90, hjust = 1))

### Appendix

- This package originally included a marimekko function as well, but the latter was discovered to be well covered in [other](https://CRAN.R-project.org/package=ggmosaic/vignettes/ggmosaic.html) [packages](https://www.semanticscholar.org/paper/Product-Plots-Wickham-Hofmann/0598a59354cb96161d68dab91fb0de21fb8671fd/figure/6), so it was removed to simplify maintenance
- The package now includes `marimekko()` to create 100% stacked mekko charts
- While the barmekko is a ggplot object, your mileage may vary when attempting operations that normally would work on a ggplot object, as the data frame is deconstructed in the process of creating the graph
3 changes: 1 addition & 2 deletions vignettes/second-mekko-vignette.Rmd
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Expand Up @@ -122,6 +122,5 @@ state.x77 %>%

### Appendix

* This package originally included a marimekko function as well, but the latter
was discovered to be well covered in [other](https://CRAN.R-project.org/package=ggmosaic/vignettes/ggmosaic.html) [packages](https://www.semanticscholar.org/paper/Product-Plots-Wickham-Hofmann/0598a59354cb96161d68dab91fb0de21fb8671fd/figure/6), so it was removed to simplify maintenance
* The package now includes `marimekko()` to create 100% stacked mekko charts
* While the barmekko is a ggplot object, your mileage may vary when attempting operations that normally would work on a ggplot object, as the data frame is deconstructed in the process of creating the graph