Description Usage Arguments Details Examples
Zonal attraction calculator
1 | calculate_zonal_attractions(synthetic_firms, attraction_rates)
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synthetic_firms |
Data frame containing data for every synthetic firm in the simulation. |
attraction_rates |
Data frame containing truck trip generation rates for each truck type used in the simulation, for each category of firms. |
This function calculates zonal attractions by truck type for each synthetic firm using aggregate truck trip generation rates. The rates are defined by the user, and often come from the Quick Response Freight Manual (QRFM), ITE trip generation rates, or estimation results from a local or borrowed establishment survey. A data frame containing the attractions by these classification variables is returned
1 | attractions <- calculate_zonal_attractions(synthetic_firms, gen_rates)
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