road.segments

This data set transforms Dodson and Tobler's street data to give each straight line segment of a "road" a unique ID.

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

road.segments function

A data frame with 657 observations and 7 variables. The data describe the straight line segments used to recreate the roads on Snow's map.<dl class="dl-horizontal">
 <dt><code>street</code></dt><dd>numeric street ID, which range between 1 and 528</dd>
 <dt><code>id</code></dt><dd>character segment ID</dd>
 <dt><code>name</code></dt><dd>road name</dd>
 <dt><code>x1</code></dt><dd>x-coordinate of first endpoint</dd>
 <dt><code>y1</code></dt><dd>y-coordinate of first endpoint</dd>
 <dt><code>x2</code></dt><dd>x-coordinate of second endpoint</dd>
 <dt><code>y2</code></dt><dd>y-coordinate of second endpoint</dd>
</dl>

Format

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

Notes

Dodson and Tobler's street data transformed into road segments. — road.segments

A data frame with 657 observations and 7 variables. The data describe the straight line segments used to recreate the roads on Snow's map.<dl class='dl-horizontal'>
 <dt><code>street</code></dt><dd>numeric street ID, which range between 1 and 528</dd>
 <dt><code>id</code></dt><dd>character segment ID</dd>
 <dt><code>name</code></dt><dd>road name</dd>
 <dt><code>x1</code></dt><dd>x-coordinate of first endpoint</dd>
 <dt><code>y1</code></dt><dd>y-coordinate of first endpoint</dd>
 <dt><code>x2</code></dt><dd>x-coordinate of second endpoint</dd>
 <dt><code>y2</code></dt><dd>y-coordinate of second endpoint</dd>
</dl>

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

road.segments: Dodson and Tobler's street data transformed into road segments.

Description

Usage

Arguments

Format

Notes

See Also