Gantt charts with R

Question

Has anybody used R to create a Gantt chart? The only solution that I'm aware of is this, but I'm looking for something more sophisticated, if possible (looking more or less like this or this).

P.S. I could live without the dependency arrows.

P.S.2 Which are the magic words that must be given in the search textbox of R Graphical Manual in order to get the (gantt chart) graph of this page?

Answer 1

Why the heck try that in R? There are far better tools for that. It is possible, using the plotrix package as you found out already

But that's merely just a plot area, some axes and some boxes drawn on it. You can draw whatever you want in R, including tea kettles, but always ask yourself if you're not trying to change a lightbulb with a chainsaw.

Regarding the R Graphical Manual : gantt chart is not included yet. Feel free to add to the community ;-)

Answer 2

Here's a post that I wrote on using ggplot to generate something like a Gantt chart. Not very sophisticated, but might give you some ideas.

Answer 3

A simple ggplot2 gantt chart.

First, we create some data.

tasks <- c("Review literature", "Mung data", "Stats analysis", "Write Report")
dfr <- data.frame(
  name        = factor(tasks, levels = tasks),
  start.date  = c("24/08/2010", "01/10/2010", "01/11/2010", "14/02/2011"),
  end.date    = c("31/10/2010", "14/12/2010", "28/02/2011", "30/04/2011"),
  is.critical = c(TRUE, FALSE, FALSE, TRUE)
)
mdfr <- melt(dfr, measure.vars = c("start.date", "end.date"))

Now draw the plot.

ggplot(mdfr, aes(as.Date(value, "%d/%m/%Y"), name, colour = is.critical)) + 
  geom_line(size = 6) +
  xlab("") + ylab("") +
  theme_bw()

Answer 4

Try this:

install.packages("plotrix")
library(plotrix)
?gantt.chart