Memory-Efficient Storage of Large Data on Disk and Fast Access
Functions
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Documentation for package ‘ff’ version 4.5.2
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A B C D E F G H I K L M N O P Q R S T U V W Y misc
-- A --
| add | Incrementing an ff or ram object |
| add.default | Incrementing an ff or ram object |
| add.ff | Incrementing an ff or ram object |
| appendLevels | Factor level manipulation |
| array2vector | Array: make vector from array |
| arrayIndex2vectorIndex | Array: make vector positions from array index |
| as.bit.ff | Conversion between bit and ff boolean |
| as.bit.hi | Hybrid Index, coercing from |
| as.bitwhich.hi | Hybrid Index, coercing from |
| as.boolean | Coercing to virtual mode |
| as.boolean.default | Coercing to virtual mode |
| as.byte | Coercing to virtual mode |
| as.byte.default | Coercing to virtual mode |
| as.character.hi | Hybrid Index, coercing from |
| as.data.frame.ffdf | Coercing to ffdf and data.frame |
| as.ff | Coercing ram to ff and ff to ram objects |
| as.ff.bit | Conversion between bit and ff boolean |
| as.ff.default | Coercing ram to ff and ff to ram objects |
| as.ff.ff | Coercing ram to ff and ff to ram objects |
| as.ffdf | Coercing to ffdf and data.frame |
| as.ffdf.data.frame | Coercing to ffdf and data.frame |
| as.ffdf.ff_matrix | Coercing to ffdf and data.frame |
| as.ffdf.ff_vector | Coercing to ffdf and data.frame |
| as.hi | Hybrid Index, coercion to |
| as.hi.( | Hybrid Index, coercion to |
| as.hi.bit | Hybrid Index, coercion to |
| as.hi.bitwhich | Hybrid Index, coercion to |
| as.hi.call | Hybrid Index, coercion to |
| as.hi.character | Hybrid Index, coercion to |
| as.hi.double | Hybrid Index, coercion to |
| as.hi.hi | Hybrid Index, coercion to |
| as.hi.integer | Hybrid Index, coercion to |
| as.hi.logical | Hybrid Index, coercion to |
| as.hi.matrix | Hybrid Index, coercion to |
| as.hi.name | Hybrid Index, coercion to |
| as.hi.NULL | Hybrid Index, coercion to |
| as.hi.ri | Hybrid Index, coercion to |
| as.hi.which | Hybrid Index, coercion to |
| as.integer.hi | Hybrid Index, coercing from |
| as.logical.hi | Hybrid Index, coercing from |
| as.matrix.hi | Hybrid Index, coercing from |
| as.nibble | Coercing to virtual mode |
| as.nibble.default | Coercing to virtual mode |
| as.quad | Coercing to virtual mode |
| as.quad.default | Coercing to virtual mode |
| as.ram | Coercing ram to ff and ff to ram objects |
| as.ram.default | Coercing ram to ff and ff to ram objects |
| as.ram.ff | Coercing ram to ff and ff to ram objects |
| as.short | Coercing to virtual mode |
| as.short.default | Coercing to virtual mode |
| as.ubyte | Coercing to virtual mode |
| as.ubyte.default | Coercing to virtual mode |
| as.ushort | Coercing to virtual mode |
| as.ushort.default | Coercing to virtual mode |
| as.vmode | Coercing to virtual mode |
| as.vmode.default | Coercing to virtual mode |
| as.vmode.ff | Coercing to virtual mode |
| as.which.hi | Hybrid Index, coercing from |
-- B --
| bigsample | Sampling from large pools |
| bigsample.default | Sampling from large pools |
| bigsample.ff | Sampling from large pools |
| boolean | Create vector of virtual mode |
| byte | Create vector of virtual mode |
-- C --
| ccbind | Collapsing functions for batch processing |
| CFUN | Collapsing functions for batch processing |
| cfun | Collapsing functions for batch processing |
| chunk.ffdf | Chunk ff_vector and ffdf |
| chunk.ff_vector | Chunk ff_vector and ffdf |
| clength | Collapsing functions for batch processing |
| clone.ff | Cloning ff and ram objects |
| clone.ffdf | Cloning ffdf objects |
| close.ff | Closing ff files |
| close.ffdf | Closing ff files |
| close.ff_pointer | Closing ff files |
| cmean | Collapsing functions for batch processing |
| cmedian | Collapsing functions for batch processing |
| cquantile | Collapsing functions for batch processing |
| crbind | Collapsing functions for batch processing |
| csum | Collapsing functions for batch processing |
| csummary | Collapsing functions for batch processing |
-- D --
| delete | Deleting the file behind an ff object |
| delete.default | Deleting the file behind an ff object |
| delete.ff | Deleting the file behind an ff object |
| delete.ffdf | Deleting the file behind an ff object |
| delete.ff_pointer | Deleting the file behind an ff object |
| deleteIfOpen | Deleting the file behind an ff object |
| deleteIfOpen.ff | Deleting the file behind an ff object |
| deleteIfOpen.ff_pointer | Deleting the file behind an ff object |
| dforder | Sorting: convenience wrappers for data.frames |
| dfsort | Sorting: convenience wrappers for data.frames |
| dim.ff | Getting and setting dim and dimorder |
| dim.ffdf | Getting and setting dim and dimorder |
| dim<-.ff | Getting and setting dim and dimorder |
| dim<-.ffdf | Getting and setting dim and dimorder |
| dimnames.ff | Getting and setting dimnames |
| dimnames.ffdf | Getting and setting dimnames of ffdf |
| dimnames.ff_array | Getting and setting dimnames |
| dimnames<-.ffdf | Getting and setting dimnames of ffdf |
| dimnames<-.ff_array | Getting and setting dimnames |
| dimorder | Getting and setting dim and dimorder |
| dimorder.default | Getting and setting dim and dimorder |
| dimorder.ffdf | Getting and setting dim and dimorder |
| dimorder.ff_array | Getting and setting dim and dimorder |
| dimorder<- | Getting and setting dim and dimorder |
| dimorder<-.ffdf | Getting and setting dim and dimorder |
| dimorder<-.ff_array | Getting and setting dim and dimorder |
| dimorderCompatible | Test for dimorder compatibility |
| dimorderStandard | Test for dimorder compatibility |
| dummy.dimnames | Array: make dimnames |
-- E --
| Extract.ff | Reading and writing vectors and arrays (high-level) |
| Extract.ffdf | Reading and writing data.frames (ffdf) |
-- F --
| ff | ff classes for representing (large) atomic data |
| ffapply | Apply for ff objects |
| ffcolapply | Apply for ff objects |
| ffconform | Get most conforming argument |
| ffdf | ff class for data.frames |
| ffdfindexget | Reading and writing ffdf data.frame using ff subscripts |
| ffdfindexset | Reading and writing ffdf data.frame using ff subscripts |
| ffdforder | Sorting: convenience wrappers for data.frames |
| ffdfsort | Sorting: convenience wrappers for data.frames |
| ffdrop | Delete an ffarchive |
| ffindexget | Reading and writing ff vectors using ff subscripts |
| ffindexorder | Sorting: chunked ordering of integer suscript positions |
| ffindexordersize | Sorting: chunked ordering of integer suscript positions |
| ffindexset | Reading and writing ff vectors using ff subscripts |
| ffinfo | Inspect content of ff saves |
| ffload | Reload ffSaved Datasets |
| fforder | Sorting: order from ff vectors |
| ffreturn | Return suitable ff object |
| ffrowapply | Apply for ff objects |
| ffsave | Save R and ff objects |
| ffsave.image | Save R and ff objects |
| ffsort | Sorting of ff vectors |
| ffsuitable | Test ff object for suitability |
| ffsuitable_attribs | Test ff object for suitability |
| ffsymmxtensions | Test for availability of ff extensions |
| fftempfile | Analyze pathfile-strings |
| ffvecapply | Apply for ff objects |
| ffxtensions | Test for availability of ff extensions |
| ff_pointer | ff classes for representing (large) atomic data |
| file.move | Change size of move an existing file |
| file.resize | Change size of move an existing file |
| filename | Get or set filename |
| filename.default | Get or set filename |
| filename.ffdf | Get or set filename |
| filename.ff_pointer | Get or set filename |
| filename<- | Get or set filename |
| filename<-.ff | Get or set filename |
| finalize | Call finalizer |
| finalize.ff | Call finalizer |
| finalize.ffdf | Call finalizer |
| finalize.ff_pointer | Call finalizer |
| finalizer | Get and set finalizer (name) |
| finalizer.ff | Get and set finalizer (name) |
| finalizer<- | Get and set finalizer (name) |
| finalizer<-.ff | Get and set finalizer (name) |
| fixdiag | Test for fixed diagonal |
| fixdiag.default | Test for fixed diagonal |
| fixdiag.dist | Test for fixed diagonal |
| fixdiag.ff | Test for fixed diagonal |
| fixdiag<- | Test for fixed diagonal |
-- G --
| get.ff | Reading and writing vectors of values (low-level) |
| getalignedpagesize | Get page size information |
| getdefaultpagesize | Get page size information |
| geterror.ff | Get error and error string |
| geterrstr.ff | Get error and error string |
| getpagesize | Get page size information |
| getset.ff | Reading and writing vectors of values (low-level) |
-- H --
| hi | Hybrid index class |
| hiparse | Hybrid Index, parsing |
-- I --
| is.factor | Getting and setting factor levels |
| is.factor.default | Getting and setting factor levels |
| is.factor.ff | Getting and setting factor levels |
| is.ff | Test for class ff |
| is.ffdf | Test for class ff |
| is.open | Test if object is opened |
| is.open.ff | Test if object is opened |
| is.open.ffdf | Test if object is opened |
| is.open.ff_pointer | Test if object is opened |
| is.ordered | Getting and setting factor levels |
| is.ordered.default | Getting and setting factor levels |
| is.ordered.ff | Getting and setting factor levels |
| is.readonly | Get readonly status |
| is.readonly.ff | Get readonly status |
| is.sorted.default | Getting and setting 'is.sorted' physical attribute |
| is.sorted<-.default | Getting and setting 'is.sorted' physical attribute |
-- K --
| keyorder.default | Sorting: order R vector in-RAM and in-place |
| keysort.default | Sorting: Sort R vector in-RAM and in-place |
-- L --
| length.ff | Getting and setting length |
| length.ffdf | Getting length of a ffdf dataframe |
| length.hi | Hybrid Index, querying |
| length<-.ff | Getting and setting length |
| levels.ff | Getting and setting factor levels |
| levels<-.ff | Getting and setting factor levels |
| LimWarn | ff Limitations and Warnings |
-- M --
| matcomb | Array: make matrix indices from row and columns positions |
| matprint | Print beginning and end of big matrix |
| maxffmode | Lossless vmode coercability |
| maxindex.hi | Hybrid Index, querying |
| maxlength | Get physical length of an ff or ram object |
| maxlength.default | Get physical length of an ff or ram object |
| maxlength.ff | Get physical length of an ff or ram object |
| mergeorder.default | Sorting: order R vector in-RAM and in-place |
| mergesort.default | Sorting: Sort R vector in-RAM and in-place |
| mismatch | Test for recycle mismatch |
-- N --
| na.count.default | Getting and setting 'na.count' physical attribute |
| na.count.ff | Getting and setting 'na.count' physical attribute |
| na.count<-.default | Getting and setting 'na.count' physical attribute |
| na.count<-.ff | Getting and setting 'na.count' physical attribute |
| names.ff | Getting and setting names |
| names.ffdf | Getting and setting dimnames of ffdf |
| names.ff_array | Getting and setting names |
| names<-.ff | Getting and setting names |
| names<-.ffdf | Getting and setting dimnames of ffdf |
| names<-.ff_array | Getting and setting names |
| ncol<- | Assigning the number of rows or columns |
| nibble | Create vector of virtual mode |
| nrow<- | Assigning the number of rows or columns |
-- O --
| open.ff | Opening an ff file |
| open.ffdf | Opening an ff file |
-- P --
| pagesize | Pagesize of ff object |
| pagesize.ff | Pagesize of ff object |
| pattern | Get or set filename |
| pattern.ff | Get or set filename |
| pattern<- | Get or set filename |
| pattern<-.ff | Get or set filename |
| pattern<-.ffdf | Get or set filename |
| physical.ff | Getting and setting physical and virtual attributes of ff objects |
| physical.ffdf | Getting physical and virtual attributes of ffdf objects |
| physical<-.ff | Getting and setting physical and virtual attributes of ff objects |
| poslength.hi | Hybrid Index, querying |
| print.ff | Print and str methods |
| print.ffdf | Print and str methods |
| print.ff_matrix | Print and str methods |
| print.ff_vector | Print and str methods |
| print.hi | Hybrid index class |
| print.matprint | Print beginning and end of big matrix |
| print.vecprint | Print beginning and end of big vector |
-- Q --
| quad | Create vector of virtual mode |
-- R --
| radixorder.default | Sorting: order R vector in-RAM and in-place |
| radixsort.default | Sorting: Sort R vector in-RAM and in-place |
| ram2ffcode | Factor codings |
| ram2ramcode | Factor codings |
| ramattribs | Get ramclass and ramattribs |
| ramattribs.default | Get ramclass and ramattribs |
| ramattribs.ff | Get ramclass and ramattribs |
| ramattribs_excludes | Get ramclass and ramattribs |
| ramclass | Get ramclass and ramattribs |
| ramclass.default | Get ramclass and ramattribs |
| ramclass.ff | Get ramclass and ramattribs |
| ramclass_excludes | Get ramclass and ramattribs |
| ramdforder | Sorting: convenience wrappers for data.frames |
| ramdfsort | Sorting: convenience wrappers for data.frames |
| ramorder.default | Sorting: order R vector in-RAM and in-place |
| ramsort.default | Sorting: Sort R vector in-RAM and in-place |
| read.csv.ffdf | Importing csv files into ff data.frames |
| read.csv2.ffdf | Importing csv files into ff data.frames |
| read.delim.ffdf | Importing csv files into ff data.frames |
| read.delim2.ffdf | Importing csv files into ff data.frames |
| read.ff | Reading and writing vectors (low-level) |
| read.table.ffdf | Importing csv files into ff data.frames |
| readwrite.ff | Reading and writing vectors (low-level) |
| recodeLevels | Factor level manipulation |
| recodeLevels.factor | Factor level manipulation |
| recodeLevels.ff | Factor level manipulation |
| regtest.fforder | Sorting: regression tests |
| regtest.vmode | Virtual storage mode |
| repnam | Replicate with names |
| row.names.ffdf | Getting and setting dimnames of ffdf |
| row.names<-.ffdf | Getting and setting dimnames of ffdf |
-- S --
| set.ff | Reading and writing vectors of values (low-level) |
| shellorder.default | Sorting: order R vector in-RAM and in-place |
| shellsort.default | Sorting: Sort R vector in-RAM and in-place |
| short | Create vector of virtual mode |
| sortLevels | Factor level manipulation |
| sortLevels.factor | Factor level manipulation |
| sortLevels.ff | Factor level manipulation |
| sortLevels.ffdf | Factor level manipulation |
| splitPathFile | Analyze pathfile-strings |
| standardPathFile | Analyze pathfile-strings |
| str.ff | Print and str methods |
| str.ffdf | Print and str methods |
| str.hi | Hybrid index class |
| subscript2integer | Hybrid Index, internal utilities |
| swap | Reading and writing in one operation (high-level) |
| swap.default | Reading and writing in one operation (high-level) |
| swap.ff | Reading and writing in one operation (high-level) |
| swap.ff_array | Reading and writing in one operation (high-level) |
| symmetric | Test for symmetric structure |
| symmetric.default | Test for symmetric structure |
| symmetric.dist | Test for symmetric structure |
| symmetric.ff | Test for symmetric structure |
| symmIndex2vectorIndex | Array: make vector positions from symmetric array index |
-- T --
| t.ff | Virtual transpose |
| tempPathFile | Analyze pathfile-strings |
-- U --
| ubyte | Create vector of virtual mode |
| unclass<- | Unclassed assignement |
| undim | Undim |
| unsort | Hybrid Index, internal utilities |
| unsort.ahi | Hybrid Index, internal utilities |
| unsort.hi | Hybrid Index, internal utilities |
| unsplitPathFile | Analyze pathfile-strings |
| update.ff | Update ff content from another object |
| update.ffdf | Update ff content from another object |
| ushort | Create vector of virtual mode |
-- V --
| vecprint | Print beginning and end of big vector |
| vector.vmode | Create vector of virtual mode |
| vector.vmode.default | Create vector of virtual mode |
| vector.vmode.ff | Create vector of virtual mode |
| vector2array | Array: make array from vector |
| vectorCompatible | Test for dimorder compatibility |
| vectorIndex2arrayIndex | Array: make array from index vector positions |
| vectorStandard | Test for dimorder compatibility |
| virtual.ff | Getting and setting physical and virtual attributes of ff objects |
| virtual.ffdf | Getting physical and virtual attributes of ffdf objects |
| virtual<-.ff | Getting and setting physical and virtual attributes of ff objects |
| vmode | Virtual storage mode |
| vmode.default | Virtual storage mode |
| vmode.ff | Virtual storage mode |
| vmode.ffdf | Virtual storage mode of ffdf |
| vmode<- | Virtual storage mode |
| vmode<-.default | Virtual storage mode |
| vmode<-.ff | Virtual storage mode |
| vt | Virtual transpose |
| vt.default | Virtual transpose |
| vt.ff | Virtual transpose |
| vw | Getting and setting virtual windows |
| vw.default | Getting and setting virtual windows |
| vw.ff | Getting and setting virtual windows |
| vw<- | Getting and setting virtual windows |
| vw<-.ff_array | Getting and setting virtual windows |
| vw<-.ff_vector | Getting and setting virtual windows |
-- W --
| write.csv | Exporting csv files from ff data.frames |
| write.csv.ffdf | Exporting csv files from ff data.frames |
| write.csv2 | Exporting csv files from ff data.frames |
| write.csv2.ffdf | Exporting csv files from ff data.frames |
| write.ff | Reading and writing vectors (low-level) |
| write.table.ffdf | Exporting csv files from ff data.frames |
-- Y --
| ymismatch | Test for recycle mismatch |
-- misc --
| $.ffdf | Reading and writing data.frames (ffdf) |
| $<-.ffdf | Reading and writing data.frames (ffdf) |
| .ffbytes | Virtual storage mode |
| .ffmode | Virtual storage mode |
| .rambytes | Virtual storage mode |
| .rammode | Virtual storage mode |
| .vcoerceable | Virtual storage mode |
| .vimplemented | Virtual storage mode |
| .vmax | Virtual storage mode |
| .vmin | Virtual storage mode |
| .vmode | Virtual storage mode |
| .vNA | Virtual storage mode |
| .vunsigned | Virtual storage mode |
| .vvalues | Virtual storage mode |
| [.ff | Reading and writing vectors and arrays (high-level) |
| [.ffdf | Reading and writing data.frames (ffdf) |
| [.ff_array | Reading and writing vectors and arrays (high-level) |
| [<-.ff | Reading and writing vectors and arrays (high-level) |
| [<-.ffdf | Reading and writing data.frames (ffdf) |
| [<-.ff_array | Reading and writing vectors and arrays (high-level) |
| [[.ff | Reading and writing vectors and arrays (high-level) |
| [[.ffdf | Reading and writing data.frames (ffdf) |
| [[<-.ff | Reading and writing vectors and arrays (high-level) |
| [[<-.ffdf | Reading and writing data.frames (ffdf) |