[R] characters, mathematical expressions and computed values

[David Winsemius]

On Nov 23, 2012, at 12:20 PM, mee1d3hs wrote:

> 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

Works fine for me. I just updated to 2.15.2 today.

Used 1:4 as the value for new and got he correct title.

>
> 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

 > sessionInfo()
R version 2.15.2 (2012-10-26)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] survey_3.29     ggplot2_0.9.2.1

loaded via a namespace (and not attached):
  [1] colorspace_1.2-0   dichromat_1.2-4    digest_0.5.2
  [4] grid_2.15.2        gtable_0.1.1       labeling_0.1
  [7] MASS_7.3-22        memoise_0.1        munsell_0.4
[10] plyr_1.7.1         proto_0.3-9.2      RColorBrewer_1.0-5
[13] reshape2_1.2.1     scales_0.2.2       stringr_0.6.1
[16] tools_2.15.2


David Winsemius, MD
Alameda, CA, USA