RE: [R] Boxplot by factors

Wed, 02 Feb 2005 22:13:47 -0800 

boxplot(force ~ cellnumber)


From: [EMAIL PROTECTED]
To: r-help@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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