Re: - Multiple Plots using By

[Sundar Dorai-Raj <sundar.dorai-raj@pdf.com>]

Andrew Scott wrote:
> Dear S-News Readers,
>
>  
>
> Is there a simple way to obtain multiple plots of 2 variables from a 
> single dataframe according to a category variable. For example,
>  
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> /by ( data.df, data.df$category, summary)/
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>  
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> gives a summary for each category but
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>  
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> /by ( data.df, data.df$category, plot (data.df$var1, data.df$var2) )/
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>  
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> just produces a single plot for all categories.
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>  
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> Any help would be appreciated.
>
>
> Andrew Scott
Hi, Andrew,

I believe you want something like:

by(data.df, data.df$category, function(x) plot(x$var1, x$var2))

HTH,

--sundar