[R] How to define a variable in a function that another function uses without using global variables

statguy martinju at mail.com
Wed Jan 18 19:30:18 CET 2012

I would like to know if it is possible to make a function that defines a
variable in another function without setting that variable globally?

I would i.e. be able to define a variables value inside a function ("one
level above) which another function makes use of, without setting this
variable globally.

I have provided this very simple illustrating example.


Running the second function results in an error:
> test2(1)
Error in test1(2) : object 'y' not found

I see 2 possible solutions to this, but neither of them is preferred in my
more complex situation:

1. Setting y<<-y_1 globally in test2-function
2. making test1 a function of both x and y.

Is there any other way to do this except from the 2 above? I hope someone
can help me with this.

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