ortho.proj

Orthogonal projection of observed cases onto road network.

datasets

Amends errors, augments data and aids analysis of John Snow's map
of the 1854 London cholera outbreak.

Peter Li 

cholera

Amend, Augment and Aid Analysis of John Snow's Cholera Map

ortho.proj function

A data frame with 5 variables that records the position of the orthogonal projection of the 578 cases onto the network of roads.<dl>
 <dt><code>road.segment</code></dt>
<dd>"address" road segment</dd> <dt><code>x.proj</code></dt>
<dd>x-coordinate</dd> <dt><code>y.proj</code></dt>
<dd>y-coordinate</dd> <dt><code>ortho.dist</code></dt>
<dd>orthogonal distance to home road segment</dd> <dt><code>case</code></dt>
<dd>numeric case ID</dd> 
</dl>

Format

Orthogonal projection of observed cases onto road network. — ortho.proj

A data frame with 5 variables that records the position of the orthogonal projection of the 578 cases onto the network of roads.<dl>
 <dt><code>road.segment</code></dt>
<dd>"address" road segment</dd>

 <dt><code>x.proj</code></dt>
<dd>x-coordinate</dd>

 <dt><code>y.proj</code></dt>
<dd>y-coordinate</dd>

 <dt><code>ortho.dist</code></dt>
<dd>orthogonal distance to home road segment</dd>

 <dt><code>case</code></dt>
<dd>numeric case ID</dd>

 
</dl>

ortho.proj: Orthogonal projection of observed cases onto road network.

Description

Usage

Arguments

Format