segmentLength

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

segmentLength function

<dl><dt>id</dt>
<dd>Character. A concatenation of a street's numeric ID, a whole number between 1 and 528, and a second number used to identify the sub-segments.</dd>
<dt>distance.unit</dt>
<dd>Character. Unit of distance: "meter", "yard" or "native". "native" returns the map's native scale. See <code>vignette("roads")</code> for information on conversion.</dd></dl>

Arguments

Compute length of road segment. — segmentLength

<dl>

<dt>id</dt>
<dd>Character. A concatenation of a street's numeric ID, a whole number between 1 and 528, and a second number used to identify the sub-segments.</dd>


<dt>distance.unit</dt>
<dd>Character. Unit of distance: "meter", "yard" or "native". "native" returns the map's native scale. See <code>vignette("roads")</code> for information on conversion.</dd>

</dl>

segmentLength: Compute length of road segment.

Description

Usage

Value

Arguments

Examples