ffbase: laf_to_ffdf – R documentation

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laf_to_ffdf

Use LaF to import data into ffdf data.frame

Use LaF to import data into a ffdf data.frame

laf_to_ffdf(laf, x = NULL, nrows = 1e+05, transFUN = NULL, ...)

`laf`	laf object pointing to a csv or fwf file
`x`	optional, `ffdf` object where laf data should be appended to.
`nrows,`	number of rows per block, passed on to `next_block`
`transFUN`	NULL or a function that is called on each data.frame chunk which is read in using `next_block`. This can be used for filtering and data transformations.
`...`	passed on to `next_block`

Basic Statistical Functions for Package 'ff'

v0.13.3

GPL-3

Authors

Edwin de Jonge, Jan Wijffels, Jan van der Laan

Initial release