col_info: Column Information for Backend

In mlr3: Machine Learning in R - Next Generation

Column Information for Backend

Description

Collects column information for backend.

Currently, this includes:

• storage type

• levels (factor / ordered), but not for the primary key column

Usage

col_info(x, ...)

## S3 method for class 'data.table'
col_info(x, primary_key = character(), ...)

## S3 method for class 'DataBackend'
col_info(x, ...)

Arguments

x	(any) A backend-like object for which to retrieve column information.
...	(any) Additional arguments.
primary_key	(character()) The primary key of the backend.

mlr3 documentation built on Nov. 17, 2023, 5:07 p.m.