[R] How to include factor levels into plot title?

Sarah Goslee sarah.goslee at gmail.com
Wed Jul 9 17:46:48 CEST 2014

How about:

plot(dd$Sepal.Length, dd$Petal.Length, main=paste("These are the
levels:", paste(levels(dd$Species), collapse=", ")))

Thanks for the actual reproducible example!


On Wed, Jul 9, 2014 at 11:24 AM, Bea GD <aguitatierra at hotmail.com> wrote:
> Hi all,
> I'd like to include the levels of one of my variables in the title of a
> plot. I'd like these factor levels to be concatenated. E.g. 'These are the
> levels: setosa, versicolor, virginica'.
> I've been working with this code but I don't get the desired results. Any
> suggestions would be a great help. Thanks!
> dd <- iris
> plot(dd$Sepal.Length, dd$Petal.Length,
>      main=sprintf("These are the levels: %s", levels(dd$Species)))

Sarah Goslee

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