'at' parameter in mtext(.., adj=0, outer=T) (PR#396)
Martin Maechler
Martin Maechler <maechler@stat.math.ethz.ch>
Mon, 17 Jan 2000 08:32:04 +0100 (MET)
>>>>> "BDR" == Prof Brian D Ripley <ripley@stats.ox.ac.uk> writes:
BDR> On Mon, 10 Jan 2000 john.maindonald@anu.edu.au wrote:
>> Depending on the setting of par()$usr, the 'at' setting in mtext(..,
>> adj=0, outer=T) may cause the text to appear in an anomalous
>> position (e. g. in the first instance below, at the left of the plot
>> region rather than at 'at=0' in the figure region), or the text may
>> not appear at all.
>>
>> If one does not set the 'at' parameter the text appears (with
>> 'adj=0') on the far left of the plot region. I assume this is also
>> anomalous; at all events it is the behaviour that I wished to
>> circumvent.
BDR> I am afraid this is documentation confusion. There are no user
BDR> coordinates in the outer margins, and at works like adj if
BDR> outer=TRUE. Indeed the example
BDR> mtext(side=1,line=0.5,"Outer text",outer=T, adj=0)
BDR> does work correctly for me: specifying adj=0 means put it at the
BDR> extreme left, adj=1 at the extreme right, and adj=0 to centre it
BDR> (on the display region, not the figure region).
BDR> I will re-write the documentation.
Thank you!
Is there any reason why "at=" should be *valid* at all for mtext()?
I think this is the confusing part.
"at=" always makes (me) think of user coordinates,...
Martin
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