Parallel Computing for Data Science

Appendix B

R Quick Start

Here we present a quick introduction to the R data/statistical programming

language. Further learning resources are listed at http://heather.cs.

ucdavis.edu/

~

/matloff/r.html.

R syntax is similar to that of C. It is object-oriented (in the sense of encap-

sulation, polymorphism and everything being an object) and is a functional

language (i.e., almost no side effects, every action is a function call, etc.).

B.1 Correspondences

aspect C/C++ R

assignment = <- (or =)

array terminology array vector, matrix, array

subscripts start at 0 start at 1

array notation m[2][3] m[2,3]

2-D array storage row-major order column-major order

mixed con ...