Man pages for OHDSI/ff
Memory-Efficient Storage of Large Data on Disk and Fast Access Functions
| add | Incrementing an ff or ram object |
| array2vector | Array: make vector from array |
| arrayIndex2vectorIndex | Array: make vector positions from array index |
| as.ff | Coercing ram to ff and ff to ram objects |
| as.ff.bit | Conversion between bit and ff boolean |
| as.ffdf | Coercing to ffdf and data.frame |
| as.hi | Hybrid Index, coercion to |
| as.integer.hi | Hybrid Index, coercing from |
| as.vmode | Coercing to virtual mode |
| bigsample | Sampling from large pools |
| CFUN | Collapsing functions for batch processing |
| chunk.bit | Chunk bit vectors |
| chunk.ffdf | Chunk ff_vector and ffdf |
| clone | Cloning ff and ram objects |
| clone.ffdf | Cloning ffdf objects |
| close.ff | Closing ff files |
| delete | Deleting the file behind an ff object |
| dim.ff | Getting and setting dim and dimorder |
| dimnames.ff_array | Getting and setting dimnames |
| dimnames.ffdf | Getting and setting dimnames of ffdf |
| dimorderCompatible | Test for dimorder compatibility |
| dummy.dimnames | Array: make dimnames |
| Extract.ff | Reading and writing vectors and arrays (high-level) |
| Extract.ffdf | Reading and writing data.frames (ffdf) |
| ff | ff classes for representing (large) atomic data |
| ffapply | 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 |
| 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 |
| ffinfo | Inspect content of ff saves |
| ffload | Reload ffSaved Datasets |
| fforder | Sorting: order from ff vectors |
| ffreturn | Return suitable ff object |
| ffsave | Save R and ff objects |
| ffsort | Sorting of ff vectors |
| ffsuitable | Test ff object for suitability |
| ffxtensions | Test for availability of ff extensions |
| filename | Get or set filename |
| file.resize | Change size of move an existing file |
| finalize | Call finalizer |
| finalizer | Get and set finalizer (name) |
| fixdiag | Test for fixed diagonal |
| Forbidden_ffdf | Forbidden ffdf functions |
| geterror.ff | Get error and error string |
| getpagesize | Get page size information |
| getset.ff | Reading and writing vectors of values (low-level) |
| hi | Hybrid index class |
| hiparse | Hybrid Index, parsing |
| Internal_ffdf | Internal ffdf functions |
| is.ff | Test for class ff |
| is.ffdf | Test for class ff |
| is.open | Test if object is opened |
| is.readonly | Get readonly status |
| is.sorted | Getting and setting 'is.sorted' physical attribute |
| length.ff | Getting and setting length |
| length.ffdf | Getting length of a ffdf dataframe |
| length.hi | Hybrid Index, querying |
| levels.ff | Getting and setting factor levels |
| LimWarn | ff Limitations and Warnings |
| matcomb | Array: make matrix indices from row and columns positions |
| matprint | Print beginning and end of big matrix |
| maxffmode | Lossless vmode coercability |
| maxlength | Get physical length of an ff or ram object |
| mismatch | Test for recycle mismatch |
| na.count | Getting and setting 'na.count' physical attribute |
| names.ff | Getting and setting names |
| nrowAssign | Assigning the number of rows or columns |
| open.ff | Opening an ff file |
| pagesize | Pagesize of ff object |
| physical.ff | Getting and setting physical and virtual attributes of ff... |
| physical.ffdf | Getting physical and virtual attributes of ffdf objects |
| print.ff | Print and str methods |
| ram2ffcode | Factor codings |
| ramattribs | Get ramclass and ramattribs |
| ramorder.default | Sorting: order R vector in-RAM and in-place |
| ramsort.default | Sorting: Sort R vector in-RAM and in-place |
| read.table.ffdf | Importing csv files into ff data.frames |
| readwrite.ff | Reading and writing vectors (low-level) |
| regtest.fforder | Sorting: regression tests |
| repnam | Replicate with names |
| sortLevels | Factor level manipulation |
| splitPathFile | Analyze pathfile-strings |
| swap | Reading and writing in one operation (high-level) |
| symmetric | Test for symmetric structure |
| symmIndex2vectorIndex | Array: make vector positions from symmetric array index |
| unclass_- | Unclassed assignement |
| undim | Undim |
| unsort | Hybrid Index, internal utilities |
| update.ff | Update ff content from another object |
| vecprint | Print beginning and end of big vector |
| vector2array | Array: make array from vector |
| vectorIndex2arrayIndex | Array: make array from index vector positions |
| vector.vmode | Create vector of virtual mode |
| vmode | Virtual storage mode |
| vmode.ffdf | Virtual storage mode of ffdf |
| vt | Virtual transpose |
| vw | Getting and setting virtual windows |
| write.table.ffdf | Exporting csv files from ff data.frames |
