[R] Working with violin plot

[Eric Berger]

Try replacing
ggplot(ToothGrowth, ... )
with
ggplot(mydata,...)

HTH,
Eric


On Wed, Mar 31, 2021 at 12:20 PM Mahmood Naderan-Tahan <
mahmood.naderan using ugent.be> wrote:

> Hi
>
> I would like to use the violin plot as described in the manual [1]. In the
> example, I see
>
> ToothGrowth$dose <- as.factor(ToothGrowth$dose)
> head(ToothGrowth)
>
> On the other hand, my data is a csv file containing some rows and numbers.
> Problem is that the following code doesn't work
>
>
> > 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
> > library(ggplot2)
> > p <- ggplot(ToothGrowth, aes(x=V4, y=V1)) + geom_violin()
> > p
> Error in FUN(X[[i]], ...) : object 'V4' not found
>
>
> Any idea to fix that?
>
>
>
>
>
> [1]
> http://www.sthda.com/english/wiki/ggplot2-violin-plot-quick-start-guide-r-software-and-data-visualization
>
>
> Regards,
> Mahmood
>
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