process_matrix_term: Process a matrix term for within-between decomposition

In panelr: Regression Models and Utilities for Repeated Measures and Panel Data

Process a matrix term for within-between decomposition

Description

This is the main entry point for handling basis functions in formulas. It evaluates the term on pooled data, extracts attributes, and creates both within and between versions of the term.

Usage

process_matrix_term(term, data)

Arguments

term	Character string like "ns(age, df=3)"
data	panel_data frame

Value

List with:

• data: Updated data frame with expanded columns

• within_cols: Character vector of within column names

• between_cols: Character vector of between column names

• var_name: Original variable name

• fn_name: Function name

panelr documentation built on Jan. 21, 2026, 9:06 a.m.