Impedance Functions for Census Metropolitan Areas

Impedance functions fitted to commuting duration distributions for Canadian Census Metropolitan Areas (CMAs) and Census Agglomerations (CAs). Functions were estimated using the fitdistrplus package based on PwDUR (commuting duration) data from the 2021 Census of Population. The best-fit distribution was selected using the lowest AIC.

Usage

data(cma_impedance_functions)

Format

A data frame with rows representing unique parameterized impedance functions for each combination of CMA and transportation mode.

CMA

Census metropolitan area code (3-digit).

CMANAME

CMA or CA name.

PR

Province code (2-digit).

PRNAME

Province or territory name.

PwMode_label

Transportation mode. One of: 'Bike', 'Car-motorized', 'Public transit', or 'Walk'.

Distribution

Best-fitting probability distribution. One of: 'Exponential', 'Normal', 'Log-normal', 'Gamma', or 'Uniform'.

est_1

First parameter estimate for the specified distribution.

est_2

Second parameter estimate for the specified distribution.

Source

Statistics Canada. (2021). Census of Population. https://www12.statcan.gc.ca/census-recensement/2021/dp-pd/prof/index.cfm?Lang=E Reproduced and distributed on an "as is" basis with the permission of Statistics Canada. This aggregated dataset was produced from confidential microdata accessed at the Research Data Centre (RDC) at McMaster University and was vetted and approved for release in accordance with disclosure control requirements. Accessed December 19, 2024.