[R] Legend Truncated Using filled.contour

[David Winsemius]

On Oct 3, 2012, at 12:58 PM, Kirsten wrote:

> Hey everyone,
> 
> I'm working on a contour plot depicting asymptomatic prevalence at varying
> durations of infectiousness and force of infection.  I've been able to work
> everything out except for this one - my legend title keeps getting cut off. 
> Here's what I have:
> 
> filled.contour(x=seq(2,30,length.out=nrow(asym_matrix)),
> y=seq(1,2,length.out=ncol(asym_matrix)),
> asym_matrix, 
> color = function(x)rev(heat.colors(x)),
> plot.title = title(main="Asymptomatic Prevalence in 0-4 Year Olds with\n
> Increasing Duration of Infectiousness",
> xlab = "Duration of Infectiousness",
> ylab = "Relative Force of Infection"),
> key.title = title(main = "Asymptomatic\n Prevalence"))
> 
> My first thought was to make the legend title text smaller using cex = 0.75
> (or similar), but it doesn't change the text size at all.  In fact, none of
> the modifiers that I've tried to add to the key.title line (size, color,
> font, etc) seems to be making a bit of difference.
> 
> key.title = title(main = "Asymptomatic\n Prevalence", cex = "0.75")

I couldn't see it until now (that I got your csv file) but you should not be qusoting the cex parameter. Also it should be `cex.main` rather than just `cex`. As explained in the filled.contour help page (which you clearly have read) the legend is really a second plot and you should be using the title function(as you clearly have figured out.) But the details and examples are in ?title .

Try:
..., 
key.title = title(main = "Asymptomatic\n Prevalence", cex.main=0.70)   )

#   0.75 still got cut off a bit. =, and I think we are both on Macs so this should be the same on a default quartz() window.

> 
> I assume there's an override earlier in the code, but I have no idea what it
> is.  Any suggestions?

People who choose to go to Nabble , a distinctly smaller group, would have been able to find you data, but most people could not. You should have used a .txt extension so you mailer would not improperly label it as something other than MIME-text. Or you could have simply copied the output of dput() into your email.

-- 

David Winsemius, MD
Alameda, CA, USA