[R] Putting obejct into Graph title

[Jonathan Rougier]

Andrea Peters wrote:
> 
> > If I want to put mean value of a matrix into the title or subtitle of a graph, how would I do this? For example, in a set of commands like below,
> >
> > > m.mean<-mean(m)
> > > gplot (m, thresh=m.mean)
> > > title (main="A2. Block Density of Matrix m\nplotted based on MDS",
> > +    sub="lines below mean density (**0.435**) suppressed")
> >
> To get the whole expression into the subtitle you could use paste().
> 
> title (main="A2. Block Density of Matrix m\nplotted based on MDS",
>   sub=paste("lines below mean density", m.mean, "suppressed"))

You might also want to introduce some simple formatting.  From R-1.5.0
you can use the "sprintf" function rather than "paste" to do

title(main = "A2. Block Density of Matrix m\nplotted based on MDS",
  sub = sprintf("lines below mean density (%.3f) suppressed", m.mean))

Jonathan.

-- 
Jonathan Rougier                       Science Laboratories
Department of Mathematical Sciences    South Road
University of Durham                   Durham DH1 3LE
tel: +44 (0)191 374 2361, fax: +44 (0)191 374 7388
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