Unlike other languages variables in R need not require type declaration. •
• Indexing of atomic vectors and lists starts from 1, not 0. • •
• Recycling
• Missing values The same variable can be assigned different data types at different instances of time, if required.
R arrays (and the special case of matrices) have a dim attribute that sets them apart from R’s “atomic vectors” which have no attributes.
A list in R allows you to gather a variety of objects under one name (that is, the name of the list) in an ordered way.
These objects can be matrices, vectors, data frames, even other lists, etc.
It is not even required that thes
