.distance_result_from_coords

Helper function takes a vector of locations, and a set of coords
(which must be a matrix or frame with first two columns being longitude
and latitude), and returns a square distance matrix for all pairs
of coordinates in a given unit

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

.distance_result_from_coords function

<dl><dt>loc_vec</dt>
<dd>Character vector of location identifiers used as matrix
row/column names.</dd>
<dt>coords</dt>
<dd>Matrix-like object with longitude in column 1 and latitude in
column 2.</dd>
<dt>unit</dt>
<dd>Character scalar unit for returned distances; one of
<code>"miles"</code>, <code>"kilometers"</code>, or <code>"meters"</code>.</dd></dl>

Arguments

Helper function takes a vector of locations, and a set of coords
(which must be a matrix or frame with first two columns being longitude
and latitude), and returns a square distance matrix for all pairs
of coordinates in a given unit — .distance_result_from_coords

<dl>

<dt>loc_vec</dt>
<dd>Character vector of location identifiers used as matrix
row/column names.</dd>


<dt>coords</dt>
<dd>Matrix-like object with longitude in column 1 and latitude in
column 2.</dd>


<dt>unit</dt>
<dd>Character scalar unit for returned distances; one of
<code>"miles"</code>, <code>"kilometers"</code>, or <code>"meters"</code>.</dd>

</dl>

Helper function takes a vector of locations, and a set of coords
(which must be a matrix or frame with first two columns being longitude
and latitude), and returns a square distance matrix for all pairs
of coordinates in a given unit

.distance_result_from_coords: Helper function takes a vector of locations, and a set of coords (which must be a matrix or frame with first two columns being longitude and latitude), and returns a square distance matrix for all pairs of coordinates in a given unit

Description

Usage

Value

Arguments