Basic Statistical Functions for Package 'ff'

Documentation for package ‘ffbase’ version 0.13.3

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Basic statistical functions for ff

-- A --

abs.ff_vector	Math for ff vectors
acos.ff_vector	Math for ff vectors
acosh.ff_vector	Math for ff vectors
addfforder	Add the order of a ff vector of the 'ff' vector 'x'
all.ff	Summary methods for ff objects
any.ff	Summary methods for ff objects
Arithmetic	Arithmetic Operators for ff vectors
as.character.ff	Character Vectors
as.Date.ff_vector	Date Conversion Functions for 'ff' vector
as.ffdf.ffdf	Trivial implementation, but very handy
as.ram.ffdf	As ram for an ffdf to get your ffdf as a data frame in RAM
asin.ff_vector	Math for ff vectors
asinh.ff_vector	Math for ff vectors
atan.ff_vector	Math for ff vectors
atanh.ff_vector	Math for ff vectors

-- B --

bigglm.ffdf	Bounded memory linear regression
binned_sum	Fast summing in different bins
binned_sum.default	Fast summing in different bins
binned_sum.ff	Fast summing in different bins
binned_sumsq	Fast squared summing in different bins
binned_sumsq.default	Fast squared summing in different bins
binned_sumsq.ff	Fast squared summing in different bins
binned_tabulate	Fast tabulating in different bins
binned_tabulate.default	Fast tabulating in different bins
binned_tabulate.ff	Fast tabulating in different bins
byMean	Fast conditional mean
bySum	Fast conditional sum

-- C --

c.ff	Concatenate 'ff' vectors
ceiling.ff_vector	Math for ff vectors
chunkify	Chunkify an element-wise function
compact	Compact a ff vector or ffdf data frame
compact.ff	Compact a ff vector or ffdf data frame
compact.ffdf	Compact a ff vector or ffdf data frame
condMean	Fast conditional mean
condSum	Fast conditional sum
cos.ff_vector	Math for ff vectors
cosh.ff_vector	Math for ff vectors
cummax.ff	Cumulative Sums, Products, and Extremes
cummin.ff	Cumulative Sums, Products, and Extremes
cumprod.ff	Cumulative Sums, Products, and Extremes
cumsum.ff	Cumulative Sums, Products, and Extremes
cut.ff	Convert Numeric ff vector to factor ff

-- D --

diff.ff	Lagged Differences
digamma.ff_vector	Math for ff vectors
droplevels.ff	The function 'droplevels' is used to drop unused levels from a 'ff' factor or , more commonly, from factors in a 'ffdf'
droplevels.ffdf	The function 'droplevels' is used to drop unused levels from factors in a 'ffdf'
duplicated.ff	Duplicated for ff and ffdf objects
duplicated.ffdf	Duplicated for ff and ffdf objects

-- E --

exp.ff_vector	Math for ff vectors
expand.ffgrid	Create a 'ffdf' from All Combinations of Factors
expm1.ff_vector	Math for ff vectors

-- F --

ffappend	Append a ff vector to another ff vector
ffbase	Basic statistical functions for ff
ffdfappend	Append a dataframe or an 'ffdf' to another 'ffdf'
ffdfdply	Performs a split-apply-combine on an ffdf
ffdfmatch	Value Matching for ff objects
ffdfrbind.fill	rbind for ffdf where missing columns are added if not available in one of the ffdf objects
ffdfsave	Save a ffdf data.frame in directory
ffdfwith	Evaluate an expression in a ffdf data environment
ffifelse	Conditional Element Selection for 'ff' vectors.
ffmatch	Value Matching for ff objects
ffordered	Add the order of a ff vector of the 'ff' vector 'x'
ffrandom	Generate 'ff' vector with draws from distribution
ffrep.int	Replicate Elements of 'ff' vectors.
ffseq	Sequence Generation of 'ff' vectors.
ffseq_len	Sequence Generation of 'ff' vectors.
ffsorted	Add the order of a ff vector of the 'ff' vector 'x'
ffwhich	Create an index from a filter statement
floor.ff_vector	Math for ff vectors
format.ff_vector	Date Conversion Functions for 'ff' vector

-- G --

gamma.ff_vector	Math for ff vectors
grouprunningcumsum	Groups the input integer vector into several groups if the running cumulative sum increases a certain maximum number

-- H --

hist for ff vectors

-- I --

ikey	Creates a unique integer key for unique combinations of rows of an 'ffdf'
is.na.ff	'Not Available' / Missing Values for ff vectors
is.na<-.ff	'Not Available' / Missing Values for ff vectors

-- L --

laf_to_ffdf	Use LaF to import data into 'ffdf' data.frame
lgamma.ff_vector	Math for ff vectors
load.ffdf	Loads ffdf data.frames from a directory
log.ff_vector	Math for ff vectors
log10.ff_vector	Math for ff vectors
log1p.ff_vector	Math for ff vectors
log2.ff_vector	Math for ff vectors

-- M --

Math	Math for ff vectors
max.ff	Minimum, maximum and range of ff vector
mean.ff	Mean of ff vector
merge.ffdf	Merge two ffdf by common columns, or do other versions of database join operations.
min.ff	Minimum, maximum and range of ff vector
move.ffdf	Moves all the columns of ffdf data.frames into a directory

-- O --

Ops for ff vectors

-- P --

Packs ffdf data.frames into a compressed file

-- Q --

quantiles

-- R --

range.ff	Minimum, maximum and range of ff vector
rle_ff	Compute the lengths and values of runs of equal values in a vector
round.ff_vector	Math for ff vectors

-- S --

save.ffdf	Save ffdf data.frames in a directory
set_ffbase_logging	sets the logging of ffbase
sign.ff_vector	Math for ff vectors
signif.ff_vector	Math for ff vectors
sin.ff_vector	Math for ff vectors
sinh.ff_vector	Math for ff vectors
sqrt.ff_vector	Math for ff vectors
subset.ff	Subsetting a ff vector or ffdfdata frame
subset.ffdf	Subsetting a ff vector or ffdfdata frame
sum.ff	Sum of 'ff' vector Elements

-- T --

table	Cross Tabulation and Table Creation
table.ff	Cross Tabulation and Table Creation
tabulate.ff	Tabulation for ff vectors
tan.ff_vector	Math for ff vectors
tanh.ff_vector	Math for ff vectors
transform.ffdf	Transform a ffdf data.frame
trigamma.ff_vector	Math for ff vectors
trunc.ff_vector	Math for ff vectors

-- U --

unique.ff	Unique values for ff and ffdf objects
unique.ffdf	Unique values for ff and ffdf objects
unpack.ffdf	Unpacks previously stored ffdf data.frame into a directory

-- W --

with.ffdf	Evaluate an expression in a ffdf data environment
within.ffdf	Evaluate an expression in a ffdf data environment

-- misc --

!.ff_vector	Ops for ff vectors
!=.ff_vector	Ops for ff vectors
%%.ff_vector	Arithmetic Operators for ff vectors
%/%.ff_vector	Arithmetic Operators for ff vectors
%in%	Value Matching for ff objects
&.ff_vector	Ops for ff vectors
*.ff_vector	Arithmetic Operators for ff vectors
+.ff_vector	Arithmetic Operators for ff vectors
-.ff_vector	Arithmetic Operators for ff vectors
/.ff_vector	Arithmetic Operators for ff vectors
<.ff_vector	Ops for ff vectors
<=.ff_vector	Ops for ff vectors
==.ff_vector	Ops for ff vectors
>.ff_vector	Ops for ff vectors
>=.ff_vector	Ops for ff vectors
[.ff	Reading and writing vectors extended to handle logical 'ff' vectors as indexes
[.ffdf	Reading and writing data.frames (ffdf)
[<-.ff	Reading and writing vectors extended to handle logical 'ff' vectors as indexes
[<-.ffdf	Reading and writing data.frames (ffdf)
^.ff_vector	Arithmetic Operators for ff vectors
\|.ff_vector	Ops for ff vectors