st_injects

Function st_injects returns a list of two objects 1. a full dataset as a
data.table with inject counts added according to design parameters. 2. a
table of only the inject counts, locations, and dates.

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

st_injects function

<dl><dt>cases</dt>
<dd>data frame of cases</dd>
<dt>distance_matrix</dt>
<dd>a distance matrix</dd>
<dt>target_loc</dt>
<dd>a location into which the injection should occur</dd>
<dt>center_decile</dt>
<dd>an integer value between 1 and 10, inclusive</dd>
<dt>radius_miles</dt>
<dd>a numeric value &gt;0</dd>
<dt>nr_cases</dt>
<dd>number of cases to inject</dd>
<dt>nr_days</dt>
<dd>number of days over which we want to inject cases</dd>
<dt>end_date</dt>
<dd>last date of injection</dd></dl>

Arguments

Add data counts for parameterized injected clusters — st_injects

<dl>

<dt>cases</dt>
<dd>data frame of cases</dd>


<dt>distance_matrix</dt>
<dd>a distance matrix</dd>


<dt>target_loc</dt>
<dd>a location into which the injection should occur</dd>


<dt>center_decile</dt>
<dd>an integer value between 1 and 10, inclusive</dd>


<dt>radius_miles</dt>
<dd>a numeric value &gt;0</dd>


<dt>nr_cases</dt>
<dd>number of cases to inject</dd>


<dt>nr_days</dt>
<dd>number of days over which we want to inject cases</dd>


<dt>end_date</dt>
<dd>last date of injection</dd>

</dl>

st_injects: Add data counts for parameterized injected clusters

Description

Usage

Value

Arguments

Examples