ff: vmode.ffdf – R documentation

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vmode.ffdf

Virtual storage mode of ffdf

Function vmode returns the virtual storage mode of each ffdf column

## S3 method for class 'ffdf'
vmode(x, ...)

`x`	`ffdf`
`...`	ignored

a character vector with one element for each column

Jens Oehlschlägel

vmode(as.ffdf(data.frame(a=as.double(1:26), b=letters, stringsAsFactors = TRUE)))
  gc()

Memory-Efficient Storage of Large Data on Disk and Fast Access Functions

v4.0.4

GPL-2 | GPL-3 | file LICENSE

Authors

Daniel Adler [aut], Christian Gläser [aut], Oleg Nenadic [aut], Jens Oehlschlägel [aut, cre], Martijn Schuemie [aut], Walter Zucchini [aut]

Initial release

2020-10-13