Informatie-visualisatie

les 3, 23 feb 2015

Erik DuvalDept. Computerwetenschappen, KULeuvenhttp://erikduval.wordpress.com & @ErikDuval

1

voorbije week…

2

3

tegen volgende week

• publiek, data, verhaal

• data: ruwe feasibility voldoende voor nu

• visuele alternatieven

• 15” per groep volgende week

4

slide van vorige week

?@ErikDuval  

h.p://erikduval.wordpress.com5

Infovis Design

6

B. McDonnel and N. Elmqvist. Towards utilizing gpus in information visualization: A model and implementation of image-space operations. Visualization and Computer Graphics, IEEE Transactions on, 15(6):1105–1112, 2009. http://www.infovis-wiki.net/index.php/Visualization_Pipeline

7

Data

- questionswhere, when, how often, …

- audiencedomain & visualisation expertise, …

- structuretime, hierarchy, network, 1D, 2D, nD, …

8

S. Stevens. On the theory of scales of measurement. Science, 103(2684), 1946.

Visual mapping

10

Size

11

http

://w

ww.

info

rmat

ioni

sbea

utifu

l.net

/200

9/vi

sual

isin

g-th

e-gu

ardi

an-d

atab

log/

Col

or

12http

://hc

il2.c

s.um

d.ed

u/trs

/99-

16/9

9-16

.htm

l

13

J. Mackinlay. Automating the design of graphical presentations of relational information. ACM Transactions On Graphics, 5(2):110–141, 1986.

14

J. Mackinlay. Automating the design of graphical presentations of relational information. ACM Transactions On Graphics, 5(2):110–141, 1986.

http://www.ted.com/talks/hans_rosling_shows_the_best_stats_you_ve_ever_seen.html

Gestalt principles

Law of ProximityThe closer objects are to each other, the more likely they are to be perceived as a group (Ehrenstein, 2004)

Law of SymmetryObjects must be balanced or symmetrical to be seen as complete or whole (Chang, 2002).

16http://www.slideshare.net/chelsc/gestalt-laws-and-design-presentationhttp://en.wikipedia.org/wiki/Gestalt_psychology#Gestalt_laws_of_grouping

Gestalt principles

Law of SimilarityObjects that are similar, with like components or attributes are more likely to be organised together (Schamber, 1986).

Law of Common FateObjects with a common movement, that move in the same direction, at the same pace , at the same time are organised as a group (Ehrenstein, 2004).

17

Gestalt principles

Law of ContinuationObjects will be grouped as a whole if they are co-linear, or follow a direction (Chang, 2002; Lyons, 2001).

Law of IsomorphismIs similarity that can be behavioural or perceptual, and can be a response based on the viewers previous experiences (Luchins & Luchins, 1999; Chang, 2002). This law is the basis for symbolism (Schamber, 1986).

18

Offer precise controls for sharing on the Internet... Users should navigate through 50 settings with more than 170 options

Example Facebook privacy statement

Questions?

How did its complexity change over time? How does its length compare to privacy statementsof other tools?

19

How did its complexity change over time?

http://www.nytimes.com/interactive/2010/05/12/business/facebook-privacy.html20

How does its length compare to privacy statementsof other tools?

http://www.nytimes.com/interactive/2010/05/12/business/facebook-privacy.html21

?@ErikDuval  

h.p://erikduval.wordpress.com22

tegen volgende week

• slides posten op blog

• blog post over wat je geleerd hebt

• uit feedback, voorstellen andere groepen

• geïllustreerd scenario

• concreet, concreet, concreet

• 15” per groep volgende week

• eventueel data met bestaande tools visualiseren23

?@ErikDuval  

h.p://erikduval.wordpress.com24