remove_constants: Remove constant columns.

In rtsho/preprocessr: Functions to make your preprocessing life easier.

Description

Remove constant columns.

Usage

remove_constants(vars = allvars)

Arguments

vars	Function or formula that returns selected columns from a data.frame. Alternatively, character vector of column names.

Examples

df <- data.frame(A=c("a1","a1","a2","a3"), B=c("b1", "b2", "b3", "b4"), C=c("c","c","c","c"), X=c(1,1,1,1))
prep <- remove_constants()
prep$fit(df)
prep$transform(df)
# or more succintly
prep$fit_transform(df)

rtsho/preprocessr documentation built on May 29, 2019, 8:58 a.m.