Message-ID: <47D8992F.3030507@biostat.wisc.edu>
Date: 2008-03-13T03:02:07Z
From: Erik Iverson
Subject: Data Structures
In-Reply-To: <43AD5CA0-181A-45C0-9154-48631D37E2EE@mac.com>
Hello -
Scott Romans wrote:
> Matlab has an aggregate variable called a structure, which consists of
> component variables each of which can be of a different data type and
> dimension. For example, I can have a single structure Model which
> consists of Model.variable1, Model.variable2, and Model.variable3,
> where variable1 is a string variable, variable 2 is a 1x24 vector, and
> variable 3 is a 6x6x6 array. The benefit is that the aggregate
> variable Model can be passed between programs without having to pass
> each of the component variables. Does R have anything similar?
>
These are objects of class "list" in R and play a very important role
when using and programming R.
See ?list, "An Introduction to R" on CRAN, or any introductory book on
R to learn about lists.
Best,
Erik Iverson
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