[Rd] ylab in time series plot (PR#2869)

[Ed Kademan]

Prof Brian Ripley <ripley at stats.ox.ac.uk> writes:

> And the bug is?
> 
> You got a correct plot, with a correct warning.
> 
> On Mon, 28 Apr 2003 kademan at phz.com wrote:
> 
> > You get a warning message when you specify a ylab parameter while
> > plotting data whose x's are POSIXct values.  Apparently the
> > `axis.POSIXct' method tries to reset the ylab---via the ...
> > parameter---after it has already been set by higher level methods.

No.  The bug is that the warning is incorrect.

How do you specify a ylab parameter to a time series plot without
generating a warning?