I am a newbie in R programming. Though I am poking into the manuals, I also wanted to ask the community "How can we set global variables inside a function?"
Any pointers will help.
Question-2: Regarding plotting,
I am using plotting multiple graphs in a single sheet, and to differentiate each one of them, I want to add title for each one of them. Can anyone tell me how I can achieve this?
Use one post per main question.
As the first answer with assign() showed you, there is a way to assign in the global environment. A simpler, shorter (but not better ... stick with assign) way is to use the
<<- operator, ie
a <<- "new"
inside the function.
For your plots, use
main="My title here" for each plot. Use something like
par(mar=c(3,3,3,1)) to give sufficient spacing.