jenks71

Classic data set for the choice of class intervals for choropleth maps.

datasets

Selected commonly used methods for choosing univariate class intervals for mapping or other graphics purposes.

Roger Bivand

classInt

Choose Univariate Class Intervals

Hisaji Ono

Richard Dunlap

Matthieu Stigler

jenks71 function

A data frame with 102 observations on the following 2 variables.<dl class="dl-horizontal">
 <dt><code>jenks71</code></dt><dd>a numeric vector: Per acre value of gross farm products in dollars by county for Illinois in 1959</dd>
 <dt><code>area</code></dt><dd>a numeric vector: county area in square miles</dd>
 </dl>

Format

Illinois 1959 county gross farm product value per acre — jenks71

A data frame with 102 observations on the following 2 variables.<dl class='dl-horizontal'>
 <dt><code>jenks71</code></dt><dd>a numeric vector: Per acre value of gross farm products in dollars by county for Illinois in 1959</dd>
 <dt><code>area</code></dt><dd>a numeric vector: county area in square miles</dd>
 </dl>

jenks71: Illinois 1959 county gross farm product value per acre

Description

Usage

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Examples