Various R Programming Tools for Data Manipulation
Description
Various R programming tools for data manipulation, including
medical unit conversions, combining objects, character vector operations,
factor manipulation, obtaining information about R objects, generating
fixed-width format files, extracting components of date & time objects,
operations on columns of data frames, matrix operations, operations on
vectors, operations on data frames, value of last evaluated expression, and a
resample() wrapper for sample() that ensures consistent behavior for both
scalar and vector arguments.