ffbase v0.12.8
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Basic Statistical Functions for Package 'ff'
Extends the out of memory vectors of 'ff' with
statistical functions and other utilities to ease their usage.
Functions in ffbase
| Name | Description | |
| 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 | The function droplevels is used to drop unused levels from factors in a 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 | Add the order of a ff vector of the ff vector x | |
| 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 | |
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Details
| License | GPL-3 |
| Type | Package |
| LazyLoad | yes |
| URL | http://github.com/edwindj/ffbase |
| RoxygenNote | 7.0.2 |
| Encoding | UTF-8 |
| NeedsCompilation | yes |
| Packaged | 2020-03-08 13:33:09 UTC; edwindj |
| Repository | CRAN |
| Date/Publication | 2020-03-18 09:00:02 UTC |
| suggests | biglm , LaF , parallel , testthat |
| imports | bit , fastmatch |
| depends | ff (>= 2.2-11) , R (>= 2.12.0) |
| Contributors | Edwin Jonge, Jan der Laan, Jan Wijffels |
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