# Overview

## Contents

# Overview#

In this lesson, we will get to know how geopandas handles some typical GIS
operations: **overlay analysis** (e.g., unions, or differences of multiple
geometries), **aggregating** geometries (e.g., smaller statistical units into
larger ones), **simplifying** geometries (to be printed or shown at smaller map
scales), and **classifying** numerical data into categories for map display.

## Learning goals#

After this lesson, you should know how to:

create new geometries by adding, subtracting or intersecting two geometries,

combine geometries based on a common attribute (

*dissolving*them),create categories for numerical data based on classifiers such as

*natural breaks*,*equal interval*, or*quantiles*, andsimplify geometries according to a maximum-error threshold