R Programming 1 : Data Types and Basic Operations

R has five basic or "atomic"classes of objects

• Character
• Numeric (real number)
• Integer
• Complex
• Logical (True/False)

The most basic object  is a vector and Empty Vectors can be created with the vector() function.

Numbers:

Numbers in R a generally treated as numeric objects (i,e double precision real numbers)
if you explicitly want an integer, you need to specify the L suffix.

Attributes:

R Objects can have attributes.

• names,dimnames
• dimensions(e.g matrices,arrays)
• class
• length
• other user-defined attributes/metadata

Attributes of an object can be accessed using the attributes() function