How to set global variables in R

Question

How can we set global variables inside a function?

I am plotting multiple graphs in a single sheet.I want to add title for each one of them.

Can anyone tell me how I can achieve this?

Answer 1

To set global variables, you can use <<- operator.

a <<- "new" 

To add titles, you can use main="My title here" for each plot.

Use something like par(mar=c(3,3,3,1)) to give sufficient spacing.