Various R programming tools for data manipulation


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Documentation for package `gdata' version 2.1.2

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aggregate.table Create 2-Way Table of Summary Statistics
Args Formatted Argument List of a Function
combine Combine R Objects With a Column Labeling the Source
ConvertMedUnits Convert medical measurements between International Standard (SI) and US 'Conventional' Units.
drop.levels Drop unused factor levels
elem Display Information about Elements in a Given Object
env Display Information about All Loaded Environments
frameApply Subset analysis on data frames
interleave Interleave Rows of Data Frames or Matrices
is.what Run Multiple is.* Tests on a Given Object
keep Remove All Objects, Except Those Specified
ll Display Information about Objects or Elements
lowerTriangle Extract or replace the upper/lower triangular portion of a matrix
matchcols Select columns names matching certain critera
MedUnits Table of conversions between Intertional Standard (SI) and US 'Conventional' Units for common medical measurements.
nobs Compute the Number of Non-missing Observations
read.xls Read Excel files
remove.vars Remove or rename variables in a dataframe
rename.vars Remove or rename variables in a dataframe
reorder.factor Reorder the Levels of a Factor
trim Remove leading and trailing spaces from character strings
unmatrix Convert a matrix into a vector, with appropriate names
upperTriangle Extract or replace the upper/lower triangular portion of a matrix