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 |
elem |
Display Information about Elements in a Given Object |
env |
Display Information about All Loaded Environments |
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 in a Given Environment |
matchcols |
Select columns names matching certain critera |
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 |