Virtual storage mode of ffdf — vmode.ffdf • ff

Function vmode returns the virtual storage mode of each ffdf column

Usage

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

Arguments

x: ffdf
...: ignored

Value

a character vector with one element for each column

Author

Jens Oehlschlägel

See also

vmode, ffdf

Examples

  vmode(as.ffdf(data.frame(a=as.double(1:26), b=letters, stringsAsFactors = TRUE)))
#>         a         b 
#>  "double" "integer" 
  gc()
#>           used (Mb) gc trigger  (Mb) max used  (Mb)
#> Ncells 1271268 67.9    2239654 119.7  2239654 119.7
#> Vcells 2344781 17.9    8388608  64.0  8387257  64.0