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 ffbase: Basic Statistical Functions for Package 'ff'
 chunkexpr: Chunk an expression
Chunk an expression
Description
chunkexpr replaces variables in an expression with a indexed version. It main use it to rewrite "normal" R expression into chunked versions that can be evaluated in a chunkedforloop.
Usage
1 
Arguments
expr 

x 

i 
name of index that will be used in the for loop, typically a 
prefix 
prefix for variables to be replaced. 
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 all.ff: Summary methods for ff objects
 any.ff: Summary methods for ff objects
 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
 bigglm.ffdf: Bounded memory linear regression
 binned_sum: Fast summing in different bins
 binned_sumsq: Fast squared summing in different bins
 binned_tabulate: Fast tabulating in different bins
 byMean: Fast conditional mean
 bySum: Fast conditional sum
 c.ff: Concatenate 'ff' vectors
 chunkexpr: Chunk an expression
 chunkify: Chunkify an elementwise function
 compact: Compact a ff vector or ffdf data frame
 condMean: Fast conditional mean
 condSum: Fast conditional sum
 cumsum.ff: Cumulative Sums, Products, and Extremes
 cut.ff: Convert Numeric ff vector to factor ff
 diff.ff: Lagged Differences
 droplevels.ff: The function 'droplevels' is used to drop unused levels from...
 droplevels.ffdf: The function 'droplevels' is used to drop unused levels from...
 duplicated.ff: Duplicated for ff and ffdf objects
 expand.ffgrid: Create a 'ffdf' from All Combinations of Factors
 ffappend: Append a ff vector to another ff vector
 ff_arithmetic: Arithmetic Operators for ff vectors
 ffbasepackage: Basic statistical functions for ff
 ffdfappend: Append a dataframe or an 'ffdf' to another 'ffdf'
 ffdfdply: Performs a splitapplycombine on an ffdf
 ffdfrbind.fill: rbind for ffdf where missing columns are added if not...
 ffdfwith: Evaluate an expression in a ffdf data environment
 ffextract: Reading and writing vectors extended to handle logical 'ff'...
 ffextractffdf: Reading and writing data.frames (ffdf)
 ffifelse: Conditional Element Selection for 'ff' vectors.
 ffmatch: Value Matching for ff objects
 ff_math: Math for ff vectors
 ff_ops: Ops for ff vectors
 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.
 ffwhich: Create an index from a filter statement
 format.ff_vector: Date Conversion Functions for 'ff' vector
 grouprunningcumsum: Groups the input integer vector into several groups if the...
 hist2d.ff: compute and plot 2 dimensional histogram of ff data
 hist.ff: hist for ff vectors
 ikey: Creates a unique integer key for unique combinations of rows...
 is.na.ff: 'Not Available' / Missing Values for ff vectors
 laf_to_ffdf: Use LaF to import data into 'ffdf' data.frame
 load.ffdf: Loads ffdf data.frames from a directory
 mean.ff: Mean of ff vector
 merge.ffdf: Merge two ffdf by common columns, or do other versions of...
 min.ff: Minimum, maximum and range of ff vector
 move.ffdf: Moves all the columns of ffdf data.frames into a directory
 pack.ffdf: Packs ffdf data.frames into a compressed file
 pkgdeprecated: Save a ffdf data.frame in directory
 quantile.ff: quantiles
 rle_ff: Compute the lengths and values of runs of equal values in a...
 save.ffdf: Save ffdf data.frames in a directory
 set_ffbase_logging: sets the logging of ffbase
 subset.ff: Subsetting a ff vector or ffdfdata frame
 sum.ff: Sum of 'ff' vector Elements
 table: Cross Tabulation and Table Creation
 tabulate.ff: Tabulation for ff vectors
 transform.ffdf: Transform a ffdf data.frame
 unique.ff: Unique values for ff and ffdf objects
 unpack.ffdf: Unpacks previously stored ffdf data.frame into a directory
 with.ffdf: Evaluate an expression in a ffdf data environment
 within.ffdf: Evaluate an expression in a ffdf data environment