Basic Statistical Functions for Package 'ff'

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 element-wise 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 |

ffbase-package | Basic statistical functions for ff |

ffdfappend | Append a dataframe or an 'ffdf' to another 'ffdf' |

ffdfdply | Performs a split-apply-combine 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 |

pkg-deprecated | 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 |

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