Data types in R

R has five primitive or atomic types:

  • Character
  • Numeric
  • Integer
  • Complex
  • Logical/Boolean

It also has the following more complex container types:

  • Vector: This is similar to numpy.array. It can only contain objects of the same type.
  • List: This is a heterogeneous container. Its equivalent in pandas would be a series.
  • DataFrame: This is a heterogeneous two-dimensional container, equivalent to a pandas DataFrame.
  • Matrix: This is a homogeneous two-dimensional version of a vector. It is similar to a numpy.array.

For this chapter, we will focus on list and DataFrame, which have the following equivalents in pandas: series and DataFrame.

For more information on R data types, refer to the following document at http://www.statmethods.net/input/datatypes.html.
For NumPy data types, refer to the following documents at http://docs.scipy.org/doc/numpy/reference/generated/numpy.array.html and http://docs.scipy.org/doc/numpy/reference/generated/numpy.matrix.html.
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