6. Vandaag
• (Data-ink) Design Principles (ik)
• Show-and-Tell (jullie)
• 5 mins + 5 mins ‘design-critique’
• Quick feedback per groep
• Opdracht tegen volgende keer (ik)
6
8. Five principles
1. Above all else show the data.
2. Maximize the data-ink ratio, within reason.
3. Erase non-data ink, within reason.
4. Erase redundant data-ink.
5. Revise and edit.
Source: Katrien Verbert
"The success of a visualization is based on deep
knowledge and care about the substance, and the
quality, relevance and integrity of the content."
(Tufte, 1983)
8
9. Data-ink
A large share of ink on a graphic should present data
Information, the ink changing as the data change.
Data-ink is the non-erasable core of a graphic...
(Tufte, 1983)
9
10. Data-ink ratio =
data-ink
Total ink used to print graphic
= Proportion of a graphic’s ink devoted to the
non-redundant display of data-information.
= 1.0 – proportion of graphic that can be
erased without the loss of information
Data-ink ratio
10
13. What is the data-ink ratio of this graphic?
< 0.001
Source: Katrien Verbert 13
14. Five Principles
1. Above all else show the data.
2. Maximize the data-ink ratio.
• Within reason
• Every bit of ink on a graphic requires a reason
3. Erase non-data ink, within reason.
4. Erase redundant data-ink.
5. Revise and edit.
14
15. Maximize the data-ink ratio, within reason
“A pixel
is a
terrible
thing to
waste.”
(Shneiderman)
Slide source: Chris North, Virginia Tech 15
16. Five Principles
1. Above all else show the data.
2. Maximize the data-ink ratio, within reason.
3. Erase non-data ink, within reason.
4. Erase redundant data-ink.
5. Revise and edit.
16
39. “Perfection is achieved not
when there is nothing more
to add, but when there is
nothing left to take away”
– Antoine de Saint-Exupery
39
40. Five principles
1. Above all else show the data.
2. Maximize the data-ink ratio, within reason.
3. Erase non-data ink, within reason.
4. Erase redundant data-ink.
5. Revise and edit.
Source: Katrien Verbert
"The success of a visualization is based on deep
knowledge and care about the substance, and the
quality, relevance and integrity of the content."
(Tufte, 1983)
40
41. Five principles
1. Above all else show the data.
2. Maximize the data-ink ratio, within reason.
3. Erase non-data ink, within reason.
4. Erase redundant data-ink.
5. Revise and edit.
Source: Katrien Verbert
"The success of a visualization is based on deep
knowledge and care about the substance, and the
quality, relevance and integrity of the content."
(Tufte, 1983)
41
42. “A visualization should first-of-all inform, but
if the visualization fails to reach the target
audience, it never reaches the point that it
can inform”
Informative + Attractive ?
45. Vandaag
• (Data-ink) Design Principles (ik)
• Show-and-Tell (jullie)
• 5 mins + 5 mins ‘design-critique’
• Quick feedback per groep
• Opdracht tegen volgende keer (ik)
45
46. Tegen volgende les
• Individueel: - Spreadsheet
• Team:
• Vervolg implementatie
• Draft Paper!
• Blog post
• Vooruitgang - wat geleerd vandaag
• Wat vond je van feedback sessie?
• Show-and-Tell - design critique
(eventueel weerleggen wat je gehoord hebt vandaag)
46