# & GIS

## what we're doing

• network graphs - what are they?
• making a network graph using Google Fusion Tables
• geocoding with Awesome Table & Google Sheets
• mapping with ArcGIS Online

## network graphs

Grandjean, M., “Connected World: Untangling the Air Traffic Network.” 2016. Martin Grandjean (blog). May 26, 2016. http://www.martingrandjean.ch/connected-world-air-traffic-network/.

## nodes & edges

Nykamp DQ, “An introduction to networks.” From Math Insight. http://mathinsight.org/network_introduction

## directed networks

Nykamp DQ, “An introduction to networks.” From Math Insight. http://mathinsight.org/network_introduction

## different nodes & edges

Nykamp DQ, “An introduction to networks.” From Math Insight. http://mathinsight.org/network_introduction

## weighted nodes & edges

Nykamp DQ, “An introduction to networks.” From Math Insight. http://mathinsight.org/network_introduction

# centrality

## degree centrality

more friends = more important/influential

## eigenvector centrality

more important friends = more important/influential

## closeness centrality

information from the closest can spread to the network quickly - shortest paths to everyone in the network

## betweeness centrality

information often flows through them - most short paths flow through them

# let's make a network graph!

## Break!

but first...

• go to go/arcgisonline/
• click on "groups" at the top of the screen, then "my organization's groups"
• search for "HARC"

# mapping with ArcGIS online

## First...what is GIS?

• GIS stands for Geographic Information System
• GIS is a tool used to capture, store, manipulate, analyze, manage, and present geographic data
• The data used with GIS is spatial data (data that is referenced to points on the Earth)
• GIS is not a map!

## What are our possible layers?

• basemap
• locations of archaeological finds
• locations of dealers/collectors
• locations of museums
• etc...

By Ryan Clement

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