[R] line break in pie chart labels

[Peter Dalgaard]

Peter Dalgaard <p.dalgaard at biostat.ku.dk> writes:

> > pie(c(2,3),labels=expression(pi_1,pi_2))
> Error in lab != "" : comparison is not allowed for expressions
> In addition: Warning message:
> is.na() applied to non-(list or vector) in: is.na(lab <- labels[i])

Argh. The curse of the non-functional example: It should of course say
expression(pi[1], pi[2]). 

-- 
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