[R] Is there a function to plot a Pareto diagram?

[Mark Myatt]

hzi at uol.com.br writes:
>Hi-
>
>       Is there a quick way to plot a Pareto diagram?
>       I couldn't find one. I'm being forced to do some pretty weird stuff,
>       with awk and all, to extract data in order to plot the frequency of
>       qualitative data from a larger set. Perhaps it's just my GNUrance.
>       I mean, one day, if I have time, I might even write a generic Perl 
>script,
>       but right now, it doesn't look too good on the client side, if you know
>       what I mean.

It's a matter of sorting in revers order the values in a table and
passing that to barplot():

        barplot(rev(sort(table(my.variable))))

as in:

        data(attenu)
        barplot(rev(sort(table(attenu$event))))

Get rid of the colours using the col parameter:

        barplot(rev(sort(table(attenu$event))), col = "white")

I hope that helps,

Mark

--
Mark Myatt


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