R: The function 'droplevels' is used to drop unused levels from...

droplevels.ff {ffbase} | R Documentation

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

### Description

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

### Usage

    ## S3 method for class 'ff'
    droplevels(x, ..., inplace = FALSE)

### Arguments

`x` | `ff` object
`...` | not used
`inplace` | if `TRUE` the columns will be physically changed, otherwise (default) a new `ff` vector will be created

### Value

`ff` object where levels of factors are dropped

### See Also

`droplevels` `droplevels.ffdf`

[Package ffbase version 0.13.1 Index]