Skip to Main Content
Learning Geospatial Analysis with Python - Third Edition
book

Learning Geospatial Analysis with Python - Third Edition

by Joel Lawhead
September 2019
Beginner content levelBeginner
456 pages
10h 53m
English
Packt Publishing
Content preview from Learning Geospatial Analysis with Python - Third Edition

Dot density calculations

A dot density map shows concentrations of subjects within a given area. If an area is divided up into polygons containing statistical information, you can model that information using randomly distributed dots within that area using a fixed ratio across the dataset. This type of map is commonly used for population density maps.

The cat map in Chapter 1, Learning about Geospatial Analysis with Python, is a dot density map. Let's create a dot density map from scratch using pure Python. Pure Python allows you to work with much more lightweight libraries that are generally easier to install and are more portable. For this example, we'll use a US Census Bureau Tract shapefile along the US Gulf Coast, which contains population ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Mastering Geospatial Analysis with Python

Mastering Geospatial Analysis with Python

Silas Toms, Eric van Rees, Paul Crickard

Publisher Resources

ISBN: 9781789959277Supplemental Content