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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="popdat (“population data”) generates `Scenarios` given a map and some external census data. Some of this functionality should maybe be reorganized or incorporated into the importer crate, but for now, it’s convenient to organize it here."><meta name="keywords" content="rust, rustlang, rust-lang, popdat"><title>popdat - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script src="../crates.js"></script><script defer src="../main.js"></script>
<noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc mod crate"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../popdat/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div>
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<nav class="sidebar"><a class="sidebar-logo" href="../popdat/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div>
</a><h2 class="location"><a href="#">Crate popdat</a></h2><div class="sidebar-elems"><div class="block"><ul><li class="version">Version 0.1.0</li><li><a id="all-types" href="all.html">All Items</a></li></div></ul><section><div class="block"><ul><li><a href="#modules">Modules</a></li><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#functions">Functions</a></li></ul></div></section><div id="sidebar-vars" data-name="popdat" data-ty="mod" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../popdat/index.html"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></a><nav class="sub"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="22" height="22" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="main-heading">
<h1 class="fqn"><span class="in-band">Crate <a class="mod" href="#">popdat</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../src/popdat/lib.rs.html#1-133">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>popdat (“population data”) generates <code>Scenarios</code> given a map and some external census data.
Some of this functionality should maybe be reorganized or incorporated into the importer crate,
but for now, it’s convenient to organize it here.</p>
<p>All of the types and methods here are tied to a single <code>Map</code>. Even if a city is chopped up into
multiple pieces, for now, let’s assume we’re just dealing with one map at a time. That lets us
use the map’s coordinate system, building IDs, etc.</p>
<p>These types form a pipeline:</p>
<ol>
<li>For a given map, find some census data that describes how many people live in different
areas of the city. (CensusArea)</li>
<li>Take the CensusAreas and turn them into individual CensusPersons, by randomly choosing a
specific building on the map as their home, and assigning specific attributes based on the
census data’s distribution.</li>
<li>For each CensusPerson, classify them into a PersonType, then generate a Schedule of
different Activities throughout the day.</li>
<li>Pick specific buildings to visit to satisfy the Schedule.</li>
</ol>
</div></details><h2 id="modules" class="small-section-header"><a href="#modules">Modules</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="mod" href="activities/index.html" title="popdat::activities mod">activities</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="distribute_people/index.html" title="popdat::distribute_people mod">distribute_people</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="import_census/index.html" title="popdat::import_census mod">import_census</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="make_person/index.html" title="popdat::make_person mod">make_person</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="od/index.html" title="popdat::od mod">od</a></div><div class="item-right docblock-short"><p>This is a standalone pipeline for generating a Scenario, starting from origin-destination data
(also called desire lines), which gives a count of commuters between two zones, breaking down
by mode.</p>
</div></div></div><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.CensusArea.html" title="popdat::CensusArea struct">CensusArea</a></div><div class="item-right docblock-short"><p>Represents aggregate demographic data for some part of a city. These could be census tracts or
blocks, depending what data we find. All of the areas should roughly partition the map – we
probably don’t need to guarantee we cover every single building, but we definitely shouldn’t
have two overlapping areas.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.CensusPerson.html" title="popdat::CensusPerson struct">CensusPerson</a></div><div class="item-right docblock-short"><p>Demographic information for a single person</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Config.html" title="popdat::Config struct">Config</a></div><div class="item-right docblock-short"><p>Any arbitrarily chosen parameters needed should be put here, so they can be controlled from the
UI or tuned for different cities.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Schedule.html" title="popdat::Schedule struct">Schedule</a></div><div class="item-right docblock-short"><p>A single person’s daily schedule. It’s assumed that someone always starts at home. And for most
people, the last entry should probably be Activity::Home.</p>
</div></div></div><h2 id="enums" class="small-section-header"><a href="#enums">Enums</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="enum" href="enum.Activity.html" title="popdat::Activity enum">Activity</a></div><div class="item-right docblock-short"><p>Different things people might do in the day. Maybe it’s more clear to call this a
DestinationType or similar.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="enum" href="enum.PersonType.html" title="popdat::PersonType enum">PersonType</a></div><div class="item-right docblock-short"><p>It might be useful to classify a CensusPerson into different categories to figure out their
Schedule.</p>
</div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.distribute_population_to_homes.html" title="popdat::distribute_population_to_homes fn">distribute_population_to_homes</a></div><div class="item-right docblock-short"><p>Starting from some number of total people living in a polygonal area, randomly distribute them
to residential buildings within that area. Returns a list of homes with the number of residents
in each.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.generate_scenario.html" title="popdat::generate_scenario fn">generate_scenario</a></div><div class="item-right docblock-short"><p>Wires together all the pieces, so you can just hand this any map, and it’ll automatically find
appropriate census data, and use it to produce a Scenario.</p>
</div></div></div></section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="popdat" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.60.0 (7737e0b5c 2022-04-04)" ></div>
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