[R] Computing line= for mtext

[Frank Harrell]

Whoops.  I spoke too soon.  That last approach does not survive shrinking the
graphics window.  I'll go back to the axis and par approach.
Frank


Frank Harrell wrote
> 
> Thanks very much for the ideas Baptiste and Greg.  I think this is a way
> to go:
> 
> # Right justifies (if adj=1) a vector of strings against the right margin
> (side=4) or against the y-axis (side=2)
> outerText <-
>   function(string, y, side=4, cex=par('cex'), adj=1, ...) {
>     if(side %nin% c(2,4)) stop('only works for side=2 or 4')
>     x <- if(side==4) grconvertX(1, from='nfc', to='user') else
> par('usr')[1]
>     text(x, y, paste(string,''), cex=cex, adj=adj, xpd=NA)
> }    
> 
> Frank
> 
> 
> 
> Greg Snow wrote
>> 
>> I would use the regular text function instead of mtext (remembering to
>> set par(xpd=...)), then use the grconvertX and grconvertY functions to
>> find the location to plot at (possibly adding in the results from
>> strwidth or stheight).
>> 
>> On Thu, Mar 1, 2012 at 4:52 PM, Frank Harrell <f.harrell@> wrote:
>>> Rich's pointers deals with lattice/grid graphics.  Does anyone have a
>>> solution for base graphics?
>>> Thanks
>>> Frank
>>>
>>> Richard M. Heiberger wrote
>>>>
>>>> Frank,
>>>>
>>>> This can be done directly with a variant of the panel.axis function.
>>>> See function panel.axis.right in the HH package.  This was provided for
>>>> me
>>>> by David Winsemius in response to my query on this list in October 2011
>>>> https://stat.ethz.ch/pipermail/r-help/2011-October/292806.html
>>>>
>>>> The email thread also includes comments by Deepayan Sarkar and Paul
>>>> Murrell.
>>>>
>>>> Rich
>>>>
>>>> On Wed, Feb 29, 2012 at 8:48 AM, Frank Harrell <f.harrell@>wrote:
>>>>
>>>>> I want to right-justify a vector of numbers in the right margin of a
>>>>> low-level plot.  For this I need to compute the line parameter to give
>>>>> to
>>>>> mtext.  Is this the correct scalable calculation?
>>>>>
>>>>> par(mar=c(4,3,1,5)); plot(1:20)
>>>>> s <- 'abcde'; w=strwidth(s, units='inches')/par('cin')[1]
>>>>> mtext(s, side=4, las=1, at=5, adj=1, line=w-.5, cex=1)
>>>>> mtext(s, side=4, las=1, at=7, adj=1, line=2*(w-.5), cex=2)
>>>>>
>>>>> Thanks
>>>>> Frank
>>>>>
>>>>> -----
>>>>> Frank Harrell
>>>>> Department of Biostatistics, Vanderbilt University
>>>>> --
>>>>> View this message in context:
>>>>> http://r.789695.n4.nabble.com/Computing-line-for-mtext-tp4431554p4431554.html
>>>>> Sent from the R help mailing list archive at Nabble.com.
>>>>>
>>>>> ______________________________________________
>>>>> R-help@ mailing list
>>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>>> PLEASE do read the posting guide
>>>>> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
>>>>> and provide commented, minimal, self-contained, reproducible code.
>>>>>
>>>>
>>>>       [[alternative HTML version deleted]]
>>>>
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>>>
>>>
>>> -----
>>> Frank Harrell
>>> Department of Biostatistics, Vanderbilt University
>>> --
>>> View this message in context:
>>> http://r.789695.n4.nabble.com/Computing-line-for-mtext-tp4431554p4436923.html
>>> Sent from the R help mailing list archive at Nabble.com.
>>>
>>> ______________________________________________
>>> R-help@ mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>> 
>> 
>> 
>> -- 
>> Gregory (Greg) L. Snow Ph.D.
>> 538280@
>> 
>> ______________________________________________
>> R-help@ mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>> 
> 


-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
--
View this message in context: http://r.789695.n4.nabble.com/Computing-line-for-mtext-tp4431554p4442884.html
Sent from the R help mailing list archive at Nabble.com.