On Aug 16, 2011, at 10:39 AM, Filoche wrote:
> Hi everyone.
>
> I have a long label that I would like to split. I found that I could use
> "strwrap" for simple text. However, this is not working with this label:
>
> str = expression(paste("< 20 µm phytoplankton ","(cells · ",mL^-1,")"))
>
> plot(...., ylab = strwrap(str,20),...)
>
> I suspect this is because I'm using "expression" for form my label.
>
> I also tried with \n but this is not working either.
>
> Regards,
> Phil
plotmath expressions do not support new lines within the expression. From
?plotmath:
"Control characters (e.g. \n) are not interpreted in character strings in
plotmath, unlike normal plotting."
You would need to create each line as a separate expression and use ?mtext, if
you wish, to place each line along the axis, using the 'line' argument for
placement/spacing.
HTH,
Marc Schwartz
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