Loop for main title in a plot

Hi all,

I have a problem in including my plot in a loop. Here is a simple example
for one plot:

# Plot simple graph with super- and subscript
a<-c(1,2,3,4)
b<-c(1,2,3,4)

plot(x=a,y=b,
   ylab=expression(paste("Apple"["P"])),
   xlab=expression(paste("Banana"^"th")),
   main=expression(paste(italic("i-")~"4"^"th"~"choice")))

Now I would like to include the titel (main) as a function of the number of
trails
for (trial in 1:nTrials) {
plot(

main=expression(paste(italic("i-")~"trial"^"th"~"choice")))

}

I have not quite figured out what the exact goal is but this shows how to loop with expression that have evaluated component:  .... bquote is your friend:

for (trial in 1:length(a)) {
    plot(x=a,y=b,   # you were at the very least missing an x and y argument
        main=bquote( italic(i)-.(trial)^th~choice))
                            }

... and you had too many quoted elements. Plotmath `paste` is usually not needed. Learn to use * and ~.

David.
e.g. nTrials = 5
The title should look like this:

5th plot: i ^th choice
4th plot: i-1 ^th choice
3th plot: i-2 ^th choice and so on

I have problems to create that, could you please help me?

Thank you!!

	[[alternative HTML version deleted]]

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA

Loop for main title in a plot

Thread (3 messages)