tract_generator

Pulls census tracts using tigris, computes tract centroids, and returns
a three-column data.table with GEOID, latitude, and longitude.

Provides utilities for manipulating time series of location-based counts of events to detect geo-spatial clusters. Significance of these clusters is determined using a set of models that classify based on a learned relationship between observed and the log(observed/expected) ratio of counts. The approach implemented here is similar to prospective space-time estimation of clusters using the scan statistic.

Luke Mullany

gsClusterDetect

Utilities for Geo-Spatial Cluster Detection and Significance
Classification

Howard Burkom

tract_generator function

<dl><dt>st</dt>
<dd>Character scalar; either a 2-digit state FIPS code (for example,
<code>"24"</code>) or a 2-letter USPS abbreviation (for example, <code>"MD"</code>).</dd>
<dt>county</dt>
<dd>A three-digit FIPS code (string) of the county or counties to
subset on. This can also be a county name or vector of names.</dd>
<dt>use_cache</dt>
<dd>a boolean, defaults to TRUE, to set tigris option to use
cache</dd>
<dt>...</dt>
<dd>arguments to be passed on to tigris::tracts()</dd></dl>

Arguments

Generate Census Tract Centroids for a State — tract_generator

<dl>

<dt>st</dt>
<dd>Character scalar; either a 2-digit state FIPS code (for example,
<code>"24"</code>) or a 2-letter USPS abbreviation (for example, <code>"MD"</code>).</dd>


<dt>county</dt>
<dd>A three-digit FIPS code (string) of the county or counties to
subset on. This can also be a county name or vector of names.</dd>


<dt>use_cache</dt>
<dd>a boolean, defaults to TRUE, to set tigris option to use
cache</dd>


<dt>...</dt>
<dd>arguments to be passed on to tigris::tracts()</dd>

</dl>

tract_generator: Generate Census Tract Centroids for a State

Description

Usage

Value

Arguments

Examples