Hi Ivan, The help page for plotmath has a list of symbol names such as the one Barry suggested, and in the References section there is a URL (the auckland.ac.nz one) for a table of symbols and their numeric codes.
Michael On 6 October 2010 20:51, Ivan Calandra <ivan.calan...@uni-hamburg.de> wrote: > Hi Michael, > > I'm just curious if you know about a list somewhere where I can find the > number of a specific symbol. What I mean, with your example, is how to > find that an arrow corresponds to "\255". > > Moreover, Josh wanted the arrow to be really big. Is it possible to make > it bigger? I would be interested too! > > Thanks, > Ivan > > Le 10/6/2010 11:09, Michael Bedward a écrit : >> Hi Josh, >> >> Try this... >> >> mtext(expression(symbol("\255")), side=1, line=0, at=7) >> >> Michael >> >> >> On 6 October 2010 11:45, Josh B<josh...@yahoo.com> wrote: >>> Hi all, >>> >>> I am trying to do something simple, but which is deviling me. I want to add >>> an >>> up-arrow to the x-axis, pointing to a specific location on the axis. I want >>> the >>> arrow to be as large as possible. >>> >>> Here is where I'm at with my code: >>> >>> #this part if from the ?plot example: >>> require(stats) >>> plot(cars) >>> lines(lowess(cars)) >>> #I am trying to use mtext to add the arrow... but I don't know how to do it: >>> mtext("?", side = 1, line = 0, at = 7) >>> #that question mark is a place-holder for the arrow. How do I put an >>> up-arrow >>> there instead of the question mark -- as large as possible? >>> >>> Many thanks to all of you in advance. >>> ----------------------------------- >>> Josh Banta, Ph.D >>> Center for Genomics and Systems Biology >>> New York University >>> 100 Washington Square East >>> New York, NY 10003 >>> Tel: (212) 998-8465 >>> http://plantevolutionaryecology.org >>> >>> >>> >>> >>> [[alternative HTML version deleted]] >>> >>> ______________________________________________ >>> R-help@r-project.org 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. >>> >> ______________________________________________ >> R-help@r-project.org 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. >> > > -- > Ivan CALANDRA > PhD Student > University of Hamburg > Biozentrum Grindel und Zoologisches Museum > Abt. Säugetiere > Martin-Luther-King-Platz 3 > D-20146 Hamburg, GERMANY > +49(0)40 42838 6231 > ivan.calan...@uni-hamburg.de > > ********** > http://www.for771.uni-bonn.de > http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php > > > [[alternative HTML version deleted]] > > > ______________________________________________ > R-help@r-project.org 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. > > ______________________________________________ R-help@r-project.org 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.