Friday, 3 August 2018

Variables and Data types in R Language

R- Variables

A Named storage that can be used by our program.

A Variable can be assigned value in three ways:
  • var_name <- Value                   # leftward operator
  • var_name = value                     # assignment operator
  • var_value -> Variables_name   # rightward operator
To see the data type of a variable we use class( ) function.

To see the list of variables we use ls( ) function.

To delete a variable we use rm( ) function.




R- Data types

When we create some variable in a memory, then it is stored according to the value inside that variable.

Based on the type of value the memory is allocated.

Following are the basic Data Types:
  • Vectors : a combination of values.
  • List : Can contain many different type of objects.
  • Matrices : A two dimensional Data Set.
  • Arrays : Multi-dimensional Data Set.
  • Factors : Factors store Vectors along with labels.
  • Data Frames : Tabular Data objects, can have multiple types.

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