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. The original data come from
Rusty Dodson and Waldo Tobler's 1992 digitization of Snow's map. Those
data, <http://www.ncgia.ucsb.edu/pubs/snow/snow.html>, are no longer
available. However, they are preserved in the 'HistData' package,
<https://CRAN.R-project.org/package=HistData>.

Peter Li 

cholera

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

ortho.proj function

A data frame with 5 variable that records the position of the orthogonal projection of the 578 cases onto the network of roads.<dl class="dl-horizontal">
 <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

<code><a rd-options="" href="/link/unstackFatalities?package=cholera&version=0.2.1" data-mini-rdoc="cholera::unstackFatalities">unstackFatalities</a></code> documents the code for these data.

Notes

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

A data frame with 5 variable that records the position of the orthogonal projection of the 578 cases onto the network of roads.<dl class='dl-horizontal'>
 <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>

<code><a rd-options='' href='unstackFatalities'>unstackFatalities</a></code> documents the code for these data.

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

Description

Usage

Arguments

Format

Notes