On Aug 21, 2012, at 10:39 AM, Peter Ehlers wrote:

On 2012-08-21 08:28, Brian Kriegler wrote:
All of these suggestions are great.  Let me add one other dimension.
Suppose I want to add curly quotations, italicize, underline, or bold
some of the words.  I can get this to work:

plot(-15:15,15:-15, pch=NA)
text(x=0, y=5,
expression (bold (This )~is~a~underline(test)^1~of~the~italic(Emergency)~Broadcast~System.))



I can also get this to work:


text(x=0, y=-5, dQuote("This is another test."))

But, I've wrestled getting curly quotes to work within expression().

Any suggestions are greatly appreciated.

-Brian

[....]

Font issues can be system-dependent. The following works for me on Windows.

Insert unicode characters in the appropriate places. For example,
to place double quotes around the word 'Broadcast' in your
example above:

text(0, 5, expression(....~"\u201c"*Broadcast*"\u201d"~System))

This would be a way to make that expression somewhat more "symbolic" by defining the special characters outside the expression and then using the bquote and .() functions:

qql <- "\u201c"
qqr <- "\u201d"
plot(0:10,0:10)
text(5, 5.5, bquote(Emergency~ .(qql)*Broadcast*.(qqr)~System))

That's nice because it opens up the possibilty of accessing other object values as well.



Don't forget the '*' to concatenate the quote symbols with the word.

Peter Ehlers

--
David Winsemius, MD
Alameda, CA, USA

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