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dcce (version 0.4.2)

.eval_formula_term: Evaluate a formula term

Description

Handles plain variable names, L(), D(), and Lrange() calls. Adds the computed column(s) to the parent panel in the calling environment.

Usage

.eval_formula_term(expr, panel, unit_var, time_var)

Value

Character vector of column name(s) created or referenced.

Arguments

expr

An expression (from formula).

panel

A panel data.frame.

unit_var

Character: unit variable name.

time_var

Character: time variable name.