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| Objects in R |
Objects
R allows to save the data by storing it inside an R object.
What’s an object?
It is just a name that you can use to call up stored data. For example, you can save data into an object like a or b.
> a <- 5
> a
[1] 5
How to create an Object in R?
-
To create an R object, choose a name and then use the less-than symbol,
<, followed by a minus sign,-, to save data into it. This combination looks like an arrow,<-. R will make an object, give it your name, and store in it whatever follows the arrow. -
When you ask R what’s in a, it tells you on the next line. For example:
> die <- 1:6
> die
[1] 1 2 3 4 5 6
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You can name an object in R almost anything you want, but there are a few rules. First, a name cannot start with a number. Second, a name cannot use some special symbols, like
^, !, $, @, +, -, /, or *: -
R also understands capitalization (or is case-sensitive), so name and Name will refer to different objects.
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You can see which object names you have already used with the function
ls().