Description Author(s) Examples
Provides functions to load bigdata (e.g. from Oracle) directly into ffdf
objects using DBI and some utility functions like recoding and matchmerge which does fast left outer join merging based on match
.
Jan Wijffels jwijffels@bnosac.be
1 | # See the specified functions in the package
|
Loading required package: ff
Loading required package: bit
Attaching package bit
package:bit (c) 2008-2012 Jens Oehlschlaegel (GPL-2)
creators: bit bitwhich
coercion: as.logical as.integer as.bit as.bitwhich which
operator: ! & | xor != ==
querying: print length any all min max range sum summary
bit access: length<- [ [<- [[ [[<-
for more help type ?bit
Attaching package: 'bit'
The following object is masked from 'package:base':
xor
Attaching package ff
- getOption("fftempdir")=="/work/tmp/tmp/Rtmpt8D6GP"
- getOption("ffextension")=="ff"
- getOption("ffdrop")==TRUE
- getOption("fffinonexit")==TRUE
- getOption("ffpagesize")==65536
- getOption("ffcaching")=="mmnoflush" -- consider "ffeachflush" if your system stalls on large writes
- getOption("ffbatchbytes")==16777216 -- consider a different value for tuning your system
- getOption("ffmaxbytes")==536870912 -- consider a different value for tuning your system
Attaching package: 'ff'
The following objects are masked from 'package:bit':
clone, clone.default, clone.list
The following objects are masked from 'package:utils':
write.csv, write.csv2
The following objects are masked from 'package:base':
is.factor, is.ordered
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