REVISITING FLOW MAPS:

A CLASSIFICATION AND A 3D ALTERNATIVE

TO VISUAL CLUTTER

YUHANG GU

2

MOVEMENT

VISUALIZATION OF MOVEMENT

▪ A flow map represents characteristics of movementbetween origins and destinations (nodes). The pathbetween origin and destination (links) can express thequalitative or quantitative nature of the movement.

FLOW MAPS

4

ORIGIN-DESTINATION DATA

5

km / kg / No.

03-07-2017

km / kg / No.

03-07-2017QTQLQQ

QTQLQQ

VISUALIZING OD & FLOW

6

CLASSIFICATION MATRIX

7

Nagel & Pietsch, (2016)Chwastyk & Williams, (2015)Watkins (2015)

Melendez (2015)Wood, Dykes, & Slingsby (2010)Saarinen & Ojala, (2016) Grandjean (2015)Verbeek, Buchin, & Speckmann (2011)Stefaner (2010)Harness (1838)Ortiz (2016 ) J. Wood et al. (2011)Robinson (1982) Majka (2016)

DIRECTIONALITY & PROGRESS OF TIME

8

VISUAL CLUTTER AND SOLUTION

9

Inter-municipal Immigration of Overijssel in 2013

VISUAL CLUTTER AND SOLUTION

10

Clustering

Aggregation

Interaction

Multiple View

Animation

Holten & Van Wijk (2009)

Guo (2009)

https://uclab.fh-potsdam.de/cf/Klein, Van Der Zwan, & Telea (2014)

ClusteringAggregationInteractionMultiple ViewAnimation

THE THIRD DIMENSION AS ALTERNATIVE

11

Y

Z

X

QUESTIONS AND COMMENTS

12

Thank you!