build_panel_data: Lightweight panel_data constructor

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

Lightweight panel_data constructor

Description

Internal helper function for fast reconstruction of panel_data objects. Unlike panel_data(), this does NOT validate, sort, or set up grouping by default. It simply attaches attributes and class. Use for fast reconstruction after operations that preserve the panel structure.

Usage

build_panel_data(
  x,
  id,
  wave,
  periods = NULL,
  reshaped = NULL,
  varying = NULL,
  constants = NULL,
  validate_order = FALSE
)

Arguments

x	A data frame to convert
id	Name of the id column (string)
wave	Name of the wave column (string)
periods	Vector of time periods (optional)
reshaped	Logical indicating if data was reshaped (optional)
varying	Character vector of varying variable names (optional)
constants	Character vector of constant variable names (optional)
validate_order	If TRUE, check if data is sorted and re-sort if not. Default FALSE for speed. Set TRUE when row order might have changed.

Details

Set validate_order = TRUE to check if data is sorted and fix if needed. The check is O(n); sorting only happens if data is actually unsorted.

Value

A panel_data object

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