[R] Newbie question - struggling with boxplots

[Glen Barnett]

something like this?

 par(mfrow=c(2,2))
 boxplot(Sepal.Length~Species,data=iris,main='Sepal Length')
 boxplot(Sepal.Width~Species,data=iris,main='Sepal Width')
 boxplot(Petal.Length~Species,data=iris,main='Petal Length')
 boxplot(Petal.Width~Species,data=iris,main='Petal Width')
 par(mfrow=c(1,1))


On Wed, Aug 17, 2011 at 7:24 AM, Geoffrey Stoel <g.stoel at hourglazz.com> wrote:
> Hopefully I will not be flamed for this on the list, but I am starting out
> with R and having some trouble with combining plots.
>
> I am playing with the famous iris dataset (checking out example dataset in R
> while reading through Introduction to datamining)
>
> What I would like to do is create three graphs (combined boxplots) besides
> each other for each of the three species (Setosa, Versicolour and Virginica)
> with each graph showing showing four boxplots Sepal.Length, Sepal.Width,
> Petal.Length and Petal.Width.
>
> I can create the boxplot for the total dataset by doing the following:
>
> data(iris);
> boxplot(iris[1:4]);
>
> However I would like to have this repeated for each Species in iris$Species,
> I know I can do this with:
>
> boxplot(subset(iris,Species=="setosa", select = (1:4)));
> boxplot(subset(iris,Species=="versicolor", select = (1:4)));
> boxplot(subset(iris,Species=="virginica", select = (1:4)));
>
> but I am lazy AND I want all three to be plotted besides each other AND I
> don't want to manually type the Species myself.
>
> is there an easier way to do this.... probably yes...
>
> If you want to help me out... would be deeply appreciated..
>
> Kind regards,
>
> Geoffrey
>
> (new to R and datamining)
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>