INFORMATION VISUALIZATION Alvitta Ottley Washington University in - PowerPoint PPT Presentation

CSE 557A | Sep 28, 2016 INFORMATION VISUALIZATION Alvitta Ottley Washington University in St. Louis Slide Credits: Mariah Meyer, University of Utah Remco Chang, Tufts University

Recap… Visual Encoding

identify (what and where) magnitude (how much)

identify (what and where) magnitude (how much)

Expressiveness & effectiveness

magnitude (how much) identify (what or where) expressiveness

Where do the ranking come from?

encoding semantics Ware 2010

Today… More on data mapping Multidimensional data

IN CLASS EXERCISE • 4 groups • Each group is assigned a visual channel: • shape, color, length, area • Represent the following dataset using only your visual channel Animal Times bitten Animal Color Animal Level training Cat 2 Cat brown Cat high Dog 12 Dog brown Dog poor Bird 6 Bird blue Bird fair

EXAMPLE D Animal Times bitten Cat 2 Dog 12 B Bird 6 C 0 2 4 6 8 10 12 14

EXAMPLE Animal Color Animal Times bitten Cat brown Cat 2 blue Dog brown Dog 12 B brown Bird blue Bird 6 D C

EXAMPLE GOOD Animal Animal Times bitten Level training C Level of training Cat Cat 2 high Dog Dog 12 poor Bird Bird 6 fair B D POOR

IN CLASS EXERCISE • 4 groups of 4 • Each group is assigned a visual channel: • shape, color, length, area • Represent the following dataset using only your visual channel Animal Times bitten Animal Color Animal Level training Cat 2 Cat brown Cat high Dog 12 Dog brown Dog poor Bird 6 Bird blue Bird fair

WHAT ABOUT A TABLE WITH MORE DIMENSIONS?

TABLE LENS Rao, Card (1994) •

TABLE LENS

TABLE LENS

TABLE LENS

TABLE LENS Video: http://www.open-video.org/details.php?videoid=8304 •

PARALLEL COORDINATES

PARALLEL COORDINATES

DIMENSION ORIENTATION Dasgupta InfoVis 2010

DIMENSION ORDERING

DIMENSION ORDERING

DENSITY REDUCTION Johansson EuroVis 2008

PROTOVIS DEMO

LOTS OF EXTENSIONS… Drosophila Gene Expression Data Exploration and Visualization Lawrence Berkeley National Lab

LOTS OF EXTENSIONS… Fanea et al. InfoVis 05 Villaveces, UNC / Renci Streit, Cytometry Part A, 2006

Due next in 2 weeks

NEXT TIME… Perception