[R] Boxplots by variable

[Mike Lawrence]

Check out ggplot2:
http://had.co.nz/ggplot2

Particularly:
http://had.co.nz/ggplot2/geom_boxplot.html

Looks like you'll have to melt your data to long format first though,
here's a tutorial:
http://www.statmethods.net/management/reshape.html

On Mon, Feb 2, 2009 at 8:19 PM, Vemuri, Aparna <avemuri at epri.com> wrote:
> Dear R users,
>
> I have a matrix "final" which looks like this:
>
> final
>         oSO4   oNO3       mSO4       mNO3
>  [1,]  3.3728 0.2110  1.9517421 1.01883602
>  [2,]  0.8249 0.0697  1.5970292 0.11368781
>  [3,]  0.2636 0.1004  0.6012445 0.24356332
>  [4,]  8.0072 0.3443  6.1016998 3.63207149
>  [5,] 13.5079 0.6593 12.4011068 1.55323386
>  [6,]  6.1293 0.1989  5.7620926 0.12884845
>  [7,]  0.6004 0.0661  0.7375408 0.17218600
>  [8,]  0.6912 0.1672  1.1563314 0.13469750
>  [9,]  1.0478 0.1504  1.5637809 0.99000758
> [10,]  0.4825 0.1160  0.2297545 0.08121805
>
> I would like to create boxplots for this matrix with data binned by
> oNO3, oSO4, mNO3 and mSO4, all in the same plot.
>
> I tried
> boxplot(final), boxplot(final[,1]) etc. But all those commands create
> individual plots and not what I am trying to achieve. I was wondering if
> there is an R equivalent of the matlab command "hold on" or if there is
> a simpler way around this.
>
>
>
>        [[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University
www.thatmike.com

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