Learn R Programming

⚠️There's a newer version (0.13.3) of this package.Take me there.

ffbase (version 0.12.8)

Basic Statistical Functions for Package 'ff'

Description

Extends the out of memory vectors of 'ff' with statistical functions and other utilities to ease their usage.

Copy Link

Version

Install

install.packages('ffbase')

Monthly Downloads

179

Version

0.12.8

License

GPL-3

Issues

Pull Requests

Stars

Forks

Maintainer

Edwin Jonge

Last Published

March 18th, 2020

Functions in ffbase (0.12.8)

as.character.ff

Character Vectors
binned_sum

Fast summing in different bins
as.ffdf.ffdf

Trivial implementation, but very handy
bigglm.ffdf

Bounded memory linear regression
all.ff

Summary methods for ff objects
as.ram.ffdf

As ram for an ffdf to get your ffdf as a data frame in RAM
binned_sumsq

Fast squared summing in different bins
as.Date.ff_vector

Date Conversion Functions for ff vector
chunkify

Chunkify an element-wise function
byMean

Fast conditional mean
condMean

Fast conditional mean
bySum

Fast conditional sum
diff.ff

Lagged Differences
droplevels.ff

The function droplevels is used to drop unused levels from a ff factor or , more commonly, from factors in a ffdf
c.ff

Concatenate ff vectors
duplicated.ff

Duplicated for ff and ffdf objects
condSum

Fast conditional sum
droplevels.ffdf

compact

Compact a ff vector or ffdf data frame
[.ff

Reading and writing vectors extended to handle logical ff vectors as indexes
chunkexpr

Chunk an expression
[.ffdf

Reading and writing data.frames (ffdf)
abs.ff_vector

Math for ff vectors
any.ff

Summary methods for ff objects
ffdfrbind.fill

rbind for ffdf where missing columns are added if not available in one of the ffdf objects
ffdfwith

Evaluate an expression in a ffdf data environment
>.ff_vector

Ops for ff vectors
ffwhich

Create an index from a filter statement
ffseq_len

Sequence Generation of ff vectors.
quantile.ff

quantiles
table

Cross Tabulation and Table Creation
tabulate.ff

Tabulation for ff vectors
rle_ff

Compute the lengths and values of runs of equal values in a vector
min.ff

Minimum, maximum and range of ff vector
ffseq

Sequence Generation of ff vectors.
move.ffdf

Moves all the columns of ffdf data.frames into a directory
ffrep.int

Replicate Elements of ff vectors.
ffdfappend

Append a dataframe or an ffdf to another ffdf
transform.ffdf

Transform a ffdf data.frame
ffdfdply

Performs a split-apply-combine on an ffdf
unique.ff

Unique values for ff and ffdf objects
ikey

Creates a unique integer key for unique combinations of rows of an ffdf
ffappend

Append a ff vector to another ff vector
within.ffdf

Evaluate an expression in a ffdf data environment
cut.ff

Convert Numeric ff vector to factor ff
ffifelse

Conditional Element Selection for ff vectors.
cumsum.ff

Cumulative Sums, Products, and Extremes
expand.ffgrid

Create a ffdf from All Combinations of Factors
+.ff_vector

Arithmetic Operators for ff vectors
is.na.ff

'Not Available' / Missing Values for ff vectors
ffmatch

Value Matching for ff objects
mean.ff

Mean of ff vector
ffbase-package

Basic statistical functions for ff
with.ffdf

Evaluate an expression in a ffdf data environment
unpack.ffdf

Unpacks previously stored ffdf data.frame into a directory
merge.ffdf

Merge two ffdf by common columns, or do other versions of database join operations.
addfforder

ffrandom

Generate ff vector with draws from distribution
hist.ff

hist for ff vectors
subset.ff

Subsetting a ff vector or ffdfdata frame
pack.ffdf

Packs ffdf data.frames into a compressed file
hist2d.ff

compute and plot 2 dimensional histogram of ff data
ffdfsave

Save a ffdf data.frame in directory
format.ff_vector

Date Conversion Functions for ff vector
sum.ff

Sum of ff vector Elements
load.ffdf

Loads ffdf data.frames from a directory
grouprunningcumsum

Groups the input integer vector into several groups if the running cumulative sum increases a certain maximum number
laf_to_ffdf

Use LaF to import data into ffdf data.frame
save.ffdf

Save ffdf data.frames in a directory
set_ffbase_logging

sets the logging of ffbase
binned_tabulate

Fast tabulating in different bins