[R] margin text warning message NAs coercion

[Peter Ehlers]

On 2010-02-16 9:21, e-letter wrote:
> Readers,
>
> I tried to the following commands:
>
> plot(y~x,ylab=expression(A[1]~B[2],xlab=expression(C~D))
> mtext(expression(A[1]~B[2]),"additional text",side=3,line=1)

Your plot() call is not reproducible.

Anyway, try

mtext(expression(A[1]~B[2]~~"additional text"),side=3,line=1)

  -Peter Ehlers

>
> I receive the text that I want, but the command terminal shows the
> following response:
>
> Warning message:
> NAs introduced by coercion in: mtext(expression(A[1]~B[2]),"additional
> text", side = 3,
>
> What is my mistake please?
>
> Yours,
>
> r251
> rhelpatconference.jabber.org
>
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> and provide commented, minimal, self-contained, reproducible code.
>
>

-- 
Peter Ehlers
University of Calgary
403.202.3921