R: Basic Statistical Functions for Package 'ff'

# Basic Statistical Functions for Package 'ff'

## Documentation for package ‘ffbase’ version 0.13.1

- DESCRIPTION file.
- Package NEWS.

## Help Pages

A B C D E F G H I L M O P Q R S T U W misc

ffbase-package | 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.ff | 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 --

Operators | Ops for ff vectors

## -- P --

pack.ffdf | Packs ffdf data.frames into a compressed file

## -- Q --

quantile.ff | 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