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ffbase (version 0.13.3)
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.
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Install
install.packages('ffbase')
Monthly Downloads
271
Version
0.13.3
License
GPL-3
Issues
19
Pull Requests
0
Stars
35
Forks
14
Repository
https://github.com/edwindj/ffbase
Maintainer
Edwin Jonge
Last Published
February 27th, 2021
Functions in ffbase (0.13.3)
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binned_tabulate
Fast tabulating in different bins
as.ram.ffdf
As ram for an ffdf to get your ffdf as a data frame in RAM
bigglm.ffdf
Bounded memory linear regression
ffappend
Append a ff vector to another ff vector
condMean
Fast conditional mean
format.ff_vector
Date Conversion Functions for
ff
vector
condSum
Fast conditional sum
ffbase-package
Basic statistical functions for ff
binned_sum
Fast summing in different bins
as.Date.ff_vector
Date Conversion Functions for
ff
vector
[.ff
Reading and writing vectors extended to handle logical
ff
vectors as indexes
compact
Compact a ff vector or ffdf data frame
abs.ff_vector
Math for ff vectors
hist2d.ff
compute and plot 2 dimensional histogram of ff data
ffifelse
Conditional Element Selection for
ff
vectors.
unpack.ffdf
Unpacks previously stored ffdf data.frame into a directory
ffmatch
Value Matching for ff objects
as.ffdf.ffdf
Trivial implementation, but very handy
all.ff
Summary methods for ff objects
cumsum.ff
Cumulative Sums, Products, and Extremes
diff.ff
Lagged Differences
set_ffbase_logging
sets the logging of ffbase
with.ffdf
Evaluate an expression in a ffdf data environment
>.ff_vector
Ops for ff vectors
ffseq_len
Sequence Generation of
ff
vectors.
laf_to_ffdf
Use LaF to import data into
ffdf
data.frame
ffwhich
Create an index from a filter statement
load.ffdf
Loads ffdf data.frames from a directory
transform.ffdf
Transform a ffdf data.frame
unique.ff
Unique values for ff and ffdf objects
ffrep.int
Replicate Elements of
ff
vectors.
table
Cross Tabulation and Table Creation
[.ffdf
Reading and writing data.frames (ffdf)
as.character.ff
Character Vectors
ffseq
Sequence Generation of
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
c.ff
Concatenate
ff
vectors
min.ff
Minimum, maximum and range of ff vector
ffdfsave
Save a ffdf data.frame in directory
is.na.ff
'Not Available' / Missing Values for ff vectors
+.ff_vector
Arithmetic Operators for ff vectors
within.ffdf
Evaluate an expression in a ffdf data environment
expand.ffgrid
Create a
ffdf
from All Combinations of Factors
cut.ff
Convert Numeric ff vector to factor ff
any.ff
Summary methods for ff objects
move.ffdf
Moves all the columns of ffdf data.frames into a directory
tabulate.ff
Tabulation for ff vectors
chunkexpr
Chunk an expression
rle_ff
Compute the lengths and values of runs of equal values in a vector
addfforder
Add the order of a ff vector of the
ff
vector
x
sum.ff
Sum of
ff
vector Elements
ffrandom
Generate
ff
vector with draws from distribution
ikey
Creates a unique integer key for unique combinations of rows of an
ffdf
subset.ff
Subsetting a ff vector or ffdfdata frame
grouprunningcumsum
Groups the input integer vector into several groups if the running cumulative sum increases a certain maximum number
pack.ffdf
Packs ffdf data.frames into a compressed file
droplevels.ffdf
The function
droplevels
is used to drop unused levels from factors in a
ffdf
ffdfrbind.fill
rbind for ffdf where missing columns are added if not available in one of the ffdf objects
quantile.ff
quantiles
duplicated.ff
Duplicated for ff and ffdf objects
ffdfappend
Append a dataframe or an
ffdf
to another
ffdf
save.ffdf
Save ffdf data.frames in a directory
ffdfwith
Evaluate an expression in a ffdf data environment
mean.ff
Mean of ff vector
hist.ff
hist for ff vectors
merge.ffdf
Merge two ffdf by common columns, or do other versions of database join operations.
ffdfdply
Performs a split-apply-combine on an ffdf
binned_sumsq
Fast squared summing in different bins
byMean
Fast conditional mean
chunkify
Chunkify an element-wise function
bySum
Fast conditional sum