epict_clean_factors: Clean up factor levels

In seabbs/epict: Flexible Cycle Threshold Modelling

Clean up factor levels

Description

This utility function drops empty factor levels from target factors as well as converting them to factors from character variables.

Usage

epict_clean_factors(obs, vars = c())

Arguments

obs	A data.frame with at least one character or factor variable.
vars	A character vector of variables. Defaults to empty.

Value

A data.table with empty factors dropped and character vectors transformed to factors as specified.

Author(s)

Sam Abbott

See Also

Preprocessing functions epict_check_obs(), epict_check_raw_obs(), epict_drop_na_ct(), epict_filter_ids(), epict_flag_spurious_obs(), epict_make_time_rel_to_first_uncensored(), epict_make_time_rel()

Examples

obs <- data.frame(
 m = c("fa", "aefwe", "efe"),
 c = factor(c("fa", "asas", "asa"), levels = c("fa"))
)
summary(obs)

# Default without specifying variables
summary(epict_clean_factors(obs))

# Specify variables
summary(epict_clean_factors(obs, vars = c("m", "c")))

seabbs/epict documentation built on July 3, 2023, 6:42 a.m.