[R] characters, mathematical expressions and computed values

[mee1d3hs]

The code

hist(new, main=bquote("Heart Attack (" * bar(X)==.(round(mean(new),1)) *
")")) 

does not work on 2.15.2 on OSX. the histogram is generated, but the title
does show at all, which kind of tells me the bquote expression is failing

I would appreciate any help in making this work, it seems it should be easy,
but somehow it is not. I tried using substitute, and many other ways with no
help





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