Variable Declaration And Objects
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A variable is something that allows us to store data in it, which can be manipulated. A variable in R can store an atomic vector, group of atomic vectors or a combination of many R-objects. Variable’s name in R can consist of letters, numbers and the dot or underline characters. The variable’s name can’t start with a number.
To declare a variable, assign any value (Integer, character, float) to the variable using smaller than ‘<’ operator and a hyphen ‘-’:
Variable_Name <- value
Assignment of the variable could be either leftward or rightward.
Leftward is what is shown above and the rightward is given below:
Value -> Variable_Name
Once you declare a variable, the result can be seen in ‘Environment’ window.
You can see the result by just typing the variable name and press ‘Enter’, results would be shown just below your code in the ‘Console’.
You can also use Mathematical Operator on variables; simply use the operators with variables and see the result down below your code in the ‘Console’.
In this video, we got to see how we can declare variables in R; which allows Python shell like structure.
We also talked about the mathematical operator that can be applied on the variables.
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