require_col: Assert that a required column exists in an input data frame

In eyeris: Flexible, Extensible, & Reproducible Pupillometry Preprocessing

Assert that a required column exists in an input data frame

Description

Assert that a required column exists in an input data frame

Usage

require_col(df, col, df_name, role)

Arguments

df	The data frame to check.
col	The required column name.
df_name	The name of the data frame (for the error message).
role	A human-readable description of the column's role.

Value

No return value; throws an error if the column is missing.

eyeris documentation built on Aug. 1, 2026, 1:07 a.m.