droplevels.ff

if <code>TRUE</code> the columns will be
  physically changed, otherwise (default) a new <code>ff</code>
  vector will be created

inplace

The function <code>droplevels</code> is used to drop unused
  levels from a <code>ff</code> factor or , more commonly, from
  factors in a <code>ffdf</code>

Basic (statistical) functionality for package ff

Edwin Jonge

ffbase

Basic statistical functions for package ff

droplevels.ff function

The function <code>droplevels</code> is used to drop unused levels from a <code>ff</code> factor or
, more commonly, from factors in a <code>ffdf</code>

droplevels.ff: The function `droplevels` is used to drop unused levels from a `ff` factor or , more commonly, from factors in a `ffdf`

Description

Usage

Arguments

Value

See Also