Man pages for hadley/plyr
Tools for Splitting, Applying and Combining Data

aaply	Split array, apply function, and return results in an array.
adply	Split array, apply function, and return results in a data...
alply	Split array, apply function, and return results in a list.
amv_dim	Dimensions.
amv_dimnames	Dimension names.
a_ply	Split array, apply function, and discard results.
arrange	Order a data frame by its colums.
as.data.frame.function	Make a function return a data frame.
as.list.split	Convert split list to regular list.
as.quoted	Convert input to quoted variables.
baseball	Yearly batting records for all major league baseball players
colwise	Column-wise function.
compact	Compact list.
count	Count the number of occurences.
create_progress_bar	Create progress bar.
daply	Split data frame, apply function, and return results in an...
ddply	Split data frame, apply function, and return results in a...
defaults	Set defaults.
desc	Descending order.
dims	Number of dimensions.
dlply	Split data frame, apply function, and return results in a...
d_ply	Split data frame, apply function, and discard results.
each	Aggregate multiple functions into a single function.
empty	Check if a data frame is empty.
eval.quoted	Evaluate a quoted list of variables.
failwith	Fail with specified value.
get-split	Subset splits.
here	Capture current evaluation context.
id	Compute a unique numeric id for each unique row in a data...
idata.frame	Construct an immutable data frame.
id_var	Numeric id for a vector.
indexed_array	An indexed array.
indexed_df	An indexed data frame.
is.discrete	Determine if a vector is discrete.
is.formula	Is a formula? Checks if argument is a formula
isplit2	Split iterator that returns values, not indices.
join	Join two data frames together.
join_all	Recursively join a list of data frames.
join.keys	Join keys. Given two data frames, create a unique key for...
laply	Split list, apply function, and return results in an array.
ldply	Split list, apply function, and return results in a data...
liply	Experimental iterator based version of llply.
list_to_array	List to array.
list_to_dataframe	List to data frame.
list_to_vector	List to vector.
llply	Split list, apply function, and return results in a list.
loop_apply	Loop apply
l_ply	Split list, apply function, and discard results.
maply	Call function with arguments in array or data frame,...
mapvalues	Replace specified values with new values, in a vector or...
match_df	Extract matching rows of a data frame.
mdply	Call function with arguments in array or data frame,...
mlply	Call function with arguments in array or data frame,...
m_ply	Call function with arguments in array or data frame,...
mutate	Mutate a data frame by adding new or replacing existing...
name_rows	Toggle row names between explicit and implicit.
names.quoted	Compute names of quoted variables.
nunique	Number of unique values.
ozone	Monthly ozone measurements over Central America.
plyr	plyr: the split-apply-combine paradigm for R.
plyr-deprecated	Deprecated Functions in Package plyr
print.quoted	Print quoted variables.
print.split	Print split.
progress_none	Null progress bar
progress_text	Text progress bar.
progress_time	Text progress bar with time.
progress_tk	Graphical progress bar, powered by Tk.
progress_win	Graphical progress bar, powered by Windows.
quickdf	Quick data frame.
quoted	Quote variables to create a list of unevaluated expressions...
raply	Replicate expression and return results in a array.
rbind.fill	Combine data.frames by row, filling in missing columns.
rbind.fill.matrix	Bind matrices by row, and fill missing columns with NA.
rdply	Replicate expression and return results in a data frame.
reduce_dim	Reduce dimensions.
rename	Modify names by name, not position.
revalue	Replace specified values with new values, in a factor or...
rlply	Replicate expression and return results in a list.
round_any	Round to multiple of any number.
r_ply	Replicate expression and discard results.
splat	'Splat' arguments to a function.
split_indices	Split indices.
split_labels	Generate labels for split data frame.
splitter_a	Split an array by .margins.
splitter_d	Split a data frame by variables.
strip_splits	Remove splitting variables from a data frame.
summarise	Summarise a data frame.
take	Take a subset along an arbitrary dimension
true	Function that always returns true.
tryapply	Apply with built in try. Uses compact, lapply and tryNULL
try_default	Try, with default in case of error.
unrowname	Un-rowname.
vaggregate	Vector aggregate.