run_model_single: Running a singly constrained model

In cppSim: Fast and Memory Efficient Spatial Interaction Models

Running a singly constrained model

Description

This function is the C++ implementation of run_model, it will run a singly constrained model there must be a match in the dimensions, when running a production constrained model, any(dim(distance) == length(flows)) must be TRUE if no values for weight are provided, a vector with ones is used

Usage

run_model_single(flows, distance, weight = NULL, beta = 0.25)

Arguments

flows	A vector of either origin (production constrained) or destination (attraction constrained) flows.
distance	a distance matrix between origins and destinations, provide distance in km.
weight	a vector of weights for the unconstrained part of the model.
beta	Exponent to use when calculating the cost function, default .25.

Value

A list containing a matrix with predicted values.

Examples

data(flows_test)
data(distance_test)

flows_test <- apply(flows_test,MARGIN = 1,FUN = sum)

model_test <- run_model_single(flows_test,distance_test)

cppSim documentation built on Sept. 9, 2025, 5:50 p.m.