tCorpus-cash-set_levels: Change levels of factor columns

In corpustools: Managing, Querying and Analyzing Tokenized Text

Change levels of factor columns

Description

For factor columns, the levels can be changed directly (and by reference). This is particularly usefull for fast preprocessing (e.g., making tokens lowercase, )

Arguments

column	the name of the column
levels	The new levels

Details

Usage:

## R6 method for class tCorpus. Use as tc$method (where tc is a tCorpus object).

set_levels(column, levels)

set_meta_levels(column, levels)

Examples

tc = create_tcorpus(c('Text one first sentence. Text one second sentence', 'Text two'))

## change factor levels of a column in the token data
unique_tokens <- tc$get_levels('token')
tc$set_levels('token', toupper(unique_tokens))
tc$tokens

corpustools documentation built on May 31, 2023, 8:45 p.m.