distanceTime

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

distance.unit

Character. Unit of measurement: "hour", "minute" or "second".

time.unit

walking.speed

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

distanceTime function

<dl><dt>x</dt>
<dd>Numeric. Nominal map distance.</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>
<dt>time.unit</dt>
<dd>Character. Unit of measurement: "hour", "minute" or "second".</dd>
<dt>walking.speed</dt>
<dd>Numeric. Walking speed in km/hr.</dd></dl>

Arguments

Convert distance to elapsed time. — distanceTime

<dl>

<dt>x</dt>
<dd>Numeric. Nominal map distance.</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>


<dt>time.unit</dt>
<dd>Character. Unit of measurement: "hour", "minute" or "second".</dd>


<dt>walking.speed</dt>
<dd>Numeric. Walking speed in km/hr.</dd>

</dl>

distanceTime: Convert distance to elapsed time.

Description

Usage

Value

Arguments