[R] Using bold font with bquote

Jonathan R. Blaufuss blaufusj at carleton.edu
Wed Aug 12 20:24:37 CEST 2009

  Your suggestion works great for changing the numbers to bold font, but is it possible to change the sigma symbol and the equals sign to bold font as well? I've poked around ?plotmath and am I right in saying that there is a different method for controlling symbol fonts? 

Thank you for your help,


----- Original Message -----
From: "Scott Sherrill-Mix" <shescott at mail.med.upenn.edu>
To: "Jonathan R. Blaufuss" <blaufusj at carleton.edu>
Cc: r-help at r-project.org
Sent: Wednesday, August 12, 2009 12:43:12 PM GMT -06:00 US/Canada Central
Subject: Re: [R] Using bold font with bquote

>From ?plotmath, it looks like when using expressions you set the font
inside the expression (e.g. bold(x)). It looks you tried this already
but I wonder if there was something tiny out of place since the
following works for me:



Scott Sherrill-Mix
Department of Microbiology
University of Pennsylvania
402B Johnson Pavilion
3610 Hamilton Walk
Philadelphia, PA  19104-6076

On Wed, Aug 12, 2009 at 12:36 PM, Jonathan R.
Blaufuss<blaufusj at carleton.edu> wrote:
> I'm trying to annotate a density plot and I'm using bquote to paste the sigma symbol next
> to the numeric text of the standard deviation calculation that I am performing.
> I have been able to successfully turn the sigma symbol and numeric output the color blue,
> but when I try to change the font of the text to bold, R doesn't seem to recognize the "font="
> command in the same way here as it does with "col=". (My code is below)
>        set.seed(1)
>        Data=rnorm(100,sd=10000)
>        plot(density(Data))
>        text(25000,0.00003,
>                bquote(sigma==.(mySigma),
>                list('mySigma'=format(round(sd(Data),digits=3),big.mark=","))),
>                col="blue")
> After searching the help files I've tried using the expression command with "bold()" as well
> as inserting "font=2" after the color command. However, I can't seem to get it to work.
> Can someone please point me to a resource that will help me figure this out?
> Thank You,
> Jonathan
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