[R] scatterplot to boxplot translation?

[Vining, Kelly]

Thanks for the tip on "cut," seems like it should work. I must still be missing something, though. Here, I'm cutting on the y variable, then attempting the boxplot:

cutRPKM <- cut(count$RPKM, breaks=4)

head(cutRPKM)
[1] (-0.0995,24.8] (-0.0995,24.8] (-0.0995,24.8] (-0.0995,24.8] (-0.0995,24.8]
[6] (-0.0995,24.8]
Levels: (-0.0995,24.8] (24.8,49.8] (49.8,74.7] (74.7,99.6]

boxplot(as.numeric(cutRPKM))

This gives me a single box instead of five boxes. ??

Thanks again,
--Kelly V.
________________________________________
From: David Winsemius [dwinsemius at comcast.net]
Sent: Friday, December 09, 2011 11:14 AM
To: Vining, Kelly
Cc: r-help at r-project.org
Subject: Re: [R] scatterplot to boxplot translation?

On Dec 9, 2011, at 2:11 PM, Vining, Kelly wrote:

> My apologies if anyone is seeing this twice...looks like my previous
> message didn't come through...
>
> Dear UseRs,
> I have a feeling this is a relatively simple question, but I'm
> having a hard time getting my head around it. I have a simple x-y
> scatterplot with many points, as shown below(attached). I'd like to
> make a boxplot of this by interval, such that there is one box
> representing the points in the 0-100 interval, one for the 101-200
> interval, and so on. How do I structure my R data frame to be able
> to generate such a boxplot?
>

?cut

>
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org
> ] On Behalf Of Vining, Kelly
> Sent: Friday, December 09, 2011 11:01 AM
> To: r-help at r-project.org
> Subject: [R] scatterplot to boxplot translation?
>
>
> <C_count_vs_RPKM.png>______________________________________________
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David Winsemius, MD
West Hartford, CT