[R] Boxplot by factors

[Zhen Pang]

boxplot(force ~ cellnumber)


>From: msck9 at mizzou.edu
>To: r-help at stat.math.ethz.ch
>Subject: [R] Boxplot by factors
>Date: Wed, 2 Feb 2005 14:29:49 -0600
>
>Dear all,
>  I have the following data format
>
>
>  cellnumber    force
>  	1	100
>	1	230
>	1	100
>	1 	200
>	1	130
>	1	210
>	2	179
>	2	298
>	2	400
>	2	500
>	2	600
>	...........
>I want to make a boxplot of the force according to the cellnumber. Here
>the cellnumber is actually a factor. It has 1, 2 two levels. How can I
>do that using boxplot?
>
>Thanks in advance
>Ming
>
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