This repository is part of the documentation for VisionEval. It contains all the "module docs", which is commentary at the start of each module's source code explaining how the module was estimated, what inputs it uses, what processing it does, and what outputs it generates.
Each VisionEval model uses an R script to call the modules in sequence, and the modules will often make adjustments to information produced in earlier modules.
Since the sequence of modules is important, and since some of them are called internally by other modules and do not appear explicitly in the model scripts, this repository contains two files explaining in detail what modules are called in each of the two principal VisionEval models:
VERSPM is the VisionEval Regional Strategic Planning Model, whose finest-grained inputs are "Bzones", corresponding in most cases to Census block groups.
VE-State is the VisionEval Statewide model, whose finest-grained inputs are "Azones", corresponding in most cases to counties or Census PUMAS (Public Use Microdata Areas). VE-State does most of its later processing using the same code as VERSPM, but it uses synthetic Bzones constructed using control totals and related information provided at the Azone and Metropolitan ("Marea") level.
You can find "model docs" (the full sequence of module docs) for each model at these links:
Here is an overview of VMT-related computations in VisionEval.