Jul 20, 2015
Data Structures
all objects in R are organized by 2 qualities
1. dimension
2. homogeneous vs. heterogeneous
Dimension
1d, 2d, nd
Homogeneous
atomic vectors, matrix, arrays
all composed of the same type
Heterogeneous
lists, and data frames
can be a mix of categorical and numerical
5 major data types in R and their qualities
atomic vector- 1d, is homo
matrix- 2d, is homo
array- nd, homo
list- 1d, hetero
data frame- 2d, hetero