comma as a separator for decimal places

[Arko]

Hi all!

I am plot some graphics with ggplot2 and I need axis have commas as
separator for decimal places instead of dots (i.e. 0.85 >>>> 0,85).
How can I do that?

Thanx.

[Arko]

I am sorry I did not provide you the data and code used in my question
to "increase value considerably" and "force potencial helpers to
either respond abstractly and/or without testing" or "make up a
reproducible example of their own".
So, here we go:

library(ggplot2)
m <- ggplot(movies, aes(x=rating))
m + geom_density()

I would like to change 0.00 0.05 0.10 and so on, to 0,00 0,05 0,10 and
so...

Thanx in advance.

[Ista Zahn]

HI Arko,
Thanks for the reproducible example. I would accomplish this simply by
setting the breaks and labels manually, like this:

m + geom_density() +
scale_y_continuous(breaks=seq(0,.25, by=.05), labels=gsub("\\.", ",",
seq(0,.25, by=.05)))

Best,
Ista

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Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org

[baptiste auguie]

Hi,

Try this,

comma2 <- function(x, ...) {
format(x, decimal.mark = ",", trim = TRUE, scientific = FALSE, ...)
}

last_plot() + scale_y_continuous(formatter="comma2")

[Arko]

Wow!
That is exactly what I need! Thank you very much!