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A quick overview of the features of NodeXL, the network overview, discovery, and exploration add-in for Excel 2007. This tool allows for visualizing directed graphs and social networks within Excel. It provides several network metrics and manipulation tools. Networks can be imported from Twitter and personal email.
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NodeXL: Project Network
NodeXLNetwork overview, discovery and exploration
for Microsoft Excel 2007
http://www.codeplex.com/nodexl
NodeXLNetwork overview, discovery and exploration
for Microsoft Excel 2007
http://www.codeplex.com/nodexl
Dan Fay (MSR Redmond)Cody Dunne (U Maryland)
Marc Smith (Telligent)Vladimir Barash (MSR Silicon Valley/Cornell)
Tony Capone (MSR Redmond)Natasa Milic-Frayling (MSR Cambridge)
Eduarda Mendes Rodrigues (MSR Cambridge)Eric Gleave (U Washington)Adam Perer (U Maryland)
Ben Shneiderman (U Maryland)
Problem: No network chart in
Excel
NodeXL: Network analysis and visualization tool
• Cyclic Graph data structures have limited support in existing Office tools
• Network analysis is of growing importance in academic, commercial, and Internet social media contexts
• Existing network analysis tools have command line interfaces or demand steep learning curves
• Many network data sets already live in Excel!
NodeXL: Goal: Make SNA easier
• Existing Social Network Tools are challenging for many novice users
• Tools like Excel are widely used• Leveraging a spreadsheet as a host for SNA
lowers barriers to network data analysis and display
Social Network Analysis ToolkitTools to support the study of the social network structure
social media and other network structures
Sociologist
“What are the structures of
communication in scientific
discussions?”
User Experience Information Visualization
“What are the best UI/UX workflows for network
analysis tools?”
Computer Scientist Algorithmicist for Social
Network Measures
“What are the measures and algorithms needed for understanding networks?”
7
NodeXL: Network Overview, Discovery and Exploration for Excel• Leverage spreadsheet for storage of edge and
vertex data
NodeXL: Import data from multiple sources:
• Multiple network “spigots” provide edge lists from several common sources and data formats.
NodeXL: Import edges from other spreadsheets
• Map data columns from existing spreadsheets
NodeXL: Merge Duplicate Edges (if any)
• Aggregate duplicate edges and add a “Tie Strength Column” to store the count of “duplicates” (edges could be from multiple time slices).
NodeXL: Calculate Network Analytics and Metrics
• Starter library of basic network measures
• Users may unselect resource intensive measures
NodeXL: Insert network sub-graph images
• Create “ego-centric” networks for each node in the network
• Select number of degrees out to include
NodeXL:
Display nodes sorted by network attributes using Excel Data|Sort
NodeXL: Get reports of global network metrics
Metric Value
Graph Type Directed
Unique Edges 7,852
Edges With Duplicates 0
Total Edges 7,852
Self-Loops 10
Vertices 174
Graph Density 0.260514259
NodeXL: Display whole graph
• Toggle display of whole graph display pane with Show/Hide Graph Pane
NodeXL: Create a new whole graph display
• Select “Read Workbook” to load the graph into the Display Pane.
• The title “Document Actions” is imposed by Excel
NodeXL: Viewing the whole graph
NodeXL: Using Dynamic Filters to simplify the graph
• Each data column (including dates) associated with an edge or vertex is exposed with a slider filter.
• Filtered nodes and edges turn gray or become invisible
NodeXL: Apply dynamic filters to the data
NodeXL: Map data to display attributes
• Map Edge and Vertex attributes to size, width, color, opacity, and shape
NodeXL: Decorated Network Graphs
NodeXL: filtered, decorated, labeled networks
NodeXL: Clustered networks
NodeXL: Filtered clusters
NodeXL: Add URLS to Right-click menu of Nodes
NodeXL: Import social networks from email
NodeXL: Import social networks from email
NodeXL Next Steps
• Enhanced layout controls– Smart selection of nodes
• Clustering and composite nodes– Add/remove a node to/from a cluster– Add/remove a node to/from a composite
• Add social network data sources:– Twitter, YouTube, Facebook, Outlook, Messenger,
etc.• Your suggestions?
NodeXL Partnerships and community
• University of Maryland• Northwestern University• Ohio University• Stanford University• University of Pennsylvania
5,000 + downloads on Codeplex
NodeXLNetwork overview, discovery and exploration
for Microsoft Excel 2007
http://www.codeplex.com/nodexl
Dan Fay (MSR Redmond)Cody Dunne (U Maryland)
Marc Smith (Telligent)Vladimir Barash (MSR Silicon Valley/Cornell)
Tony Capone (MSR Redmond)Natasa Milic-Frayling (MSR Cambridge)
Eduarda Mendes Rodrigues (MSR Cambridge)Eric Gleave (U Washington)Adam Perer (U Maryland)
Ben Shneiderman (U Maryland)
NodeXL: Project Network
NodeXLNetwork overview, discovery and exploration
for Microsoft Excel 2007
http://www.codeplex.com/nodexl