.sparse_dist_list_from_locs

This is a helper function to create a named list of all the locations in
<code>locs</code> within <code>threshold_meters</code> of each loc in <code>locs</code>.

internal

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

.sparse_dist_list_from_locs function

<dl><dt>locs</dt>
<dd>A <code>data.table</code> with columns <code>location</code>,
<code>latitude</code>, and <code>longitude</code>.</dd>
<dt>threshold_meters</dt>
<dd>Numeric scalar distance threshold in meters.</dd>
<dt>meters_per_unit</dt>
<dd>Numeric scalar conversion factor from output unit to
meters.</dd></dl>

Arguments

This is a helper function to create a named list of all the locations in
locs within threshold_meters of each loc in locs. — .sparse_dist_list_from_locs

<dl>

<dt>locs</dt>
<dd>A <code>data.table</code> with columns <code>location</code>,
<code>latitude</code>, and <code>longitude</code>.</dd>


<dt>threshold_meters</dt>
<dd>Numeric scalar distance threshold in meters.</dd>


<dt>meters_per_unit</dt>
<dd>Numeric scalar conversion factor from output unit to
meters.</dd>

</dl>

This is a helper function to create a named list of all the locations in
<code>locs</code> within <code>threshold_meters</code> of each loc in <code>locs</code>.

.sparse_dist_list_from_locs: This is a helper function to create a named list of all the locations in `locs` within `threshold_meters` of each loc in `locs`.

Description

Usage

Value

Arguments