[R] Violin plot with mean_sdl

[Bill Dunlap]

help(stat_summary) suggests you use the fun.args=list(...) argument to
pass arguments to the fun.* functions.   Try replacing mult=1 by
fun.args=list(mult=1).

It is possible that ggplot2::stat_summary changed its behavior since
that web page was written or that the web page was always wrong.

-Bill

On Wed, Mar 31, 2021 at 11:03 PM Mahmood Naderan-Tahan
<mahmood.naderan using ugent.be> wrote:
>
> Hi,
>
> I followed the example described at [1] but I don't know why I get the following warning
>
>
> > library(ggplot2)
> > library(Hmisc)
> > mydata <- read.csv('test.csv', header=T,row.names=1)
> > mydata
>      V1  V2   V3 V4
> P1 73.6 0.7 74.6  R
> P2 75.2 0.7 75.8  R
> P3  6.5 0.0  7.3  R
> P4 41.4 0.3 39.2  C
> P5  5.4 0.1 18.2  C
> P6 18.8 0.3 30.3  C
> > p <- ggplot(mydata, aes(x=V4, y=V1)) + geom_violin(trim=FALSE)
> > p + stat_summary(fun.data="mean_sdl", mult=1,
> +                  geom="crossbar", width=0.2 )
> Warning message:
> Ignoring unknown parameters: mult
>
>
> How can I fix that?
>
>
>
> [1] http://www.sthda.com/english/wiki/ggplot2-violin-plot-quick-start-guide-r-software-and-data-visualization
>
>
> Regards,
> Mahmood
>
>         [[alternative HTML version deleted]]
>
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