Various R programming tools for data manipulation, including:
Medical unit conversions: ConvertMedUnits,
MedUnits
Combining objects: link{bindData},
cbindX, combine,
interleave
Character vector operations: centerText,
startsWith, trim
Factor manipulation: levels,
reorder.factor, mapLevels
Obtaining information about R objects:
object.size, env,
humanReadable, is.what,
ll, keep, ls.funs,
Args, nPairs, nobs
Manipulating MS-Excel formatted files: read.xls,
installXLSXsupport, sheetCount,
xlsFormats
Generating fixed-width format files: write.fwf
Extracting components of date & time objects:
getYear, getMonth,
getDay, getHour, getMin,
getSec
Operations on columns of data frames: matchcols,
rename.vars
Matrix operations: unmatrix,
upperTriangle, lowerTriangle
Operations on vectors: case,
unknownToNA, duplicated2,
trimSum
Operations on data frames: frameApply,
wideByFactor
Value of last evaluated expression: ans
Wrapper for sample that ensures consistent behavior for
both scalar and vector arguments: resample
Gregory R. Warnes, Gregor Gorjanc, Arni Magnusson, Liviu Andronic, Jim Rogers, Don MacQueen, and Ales Korosec, with contributions by Ben Bolker, Michael Chirico, Gabor Grothendieck, Thomas Lumley, and Brian Ripley.