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Week01bDesignPrinciples.pptx

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https://twitter.com/WhiteHouse/status/1476356458702946311?s=20

Agenda:

Tufte’s Principles

Visualisation Critiques

Presentation Slots

Guiding principles

Effectiveness over Beauty

Function over Form

Substance over Style

Visualization

Real World

Source: van Wijk (2005)

Technology

Science

Art

Tufte’s Principles

Visualisation Critiques

Presentation Slots

“There is no such thing as information overload. There is only bad design.”

-Edward Tufte

Source: Tufte (2001)

Tufte’s Design Principles

Visualisations should be about the data

The visualisation should tell a story

The visualisation should have integrity

The visualisation should minimise graphical complexity

Source: Tufte (2001)

1. The visualisation should tell a story

https://cdn-images-1.medium.com/max/1600/1*XgorQDwG09D2tHXpFhAr9A.jpeg

https://www.forbes.com/sites/nicolemartin1/2018/11/01/data-visualization-how-to-tell-a-story-with-data/#272173e44368

Does this visualisation tell a story?

https://public.tableau.com/profile/ashley.pinto#!/vizhome/WhatAreImmigrantsDoinginMyCountry/Dashboard1?publish=yes

https://twitter.com/WhiteHouse/status/1476356458702946311?s=20

The visualisation should have integrity

http://www.statschat.org.nz/2014/05/05/weight-gain-lie-factor/

2. The visualisation should have integrity

Data from: https://www.barfoot.co.nz/market-reports/2017/january/suburb-report

Average sale price

1776750 1528333 1527286 1505016 1408500 1365400 1336746 1250714 1245035 1169250 1164167 1108733 1081375 1073391 1036250 994771 956301 917668 881000 Average sale price (3 bdrm) Epsom Grey Lynn Ponsonby Mt Eden Pt Chevalier Westmere Sandringham Greenlane One Tree Hill Newmarket Royal Oak Mt Albert Three Kings Onehunga Hillsborough New Windsor Blockhouse Bay Mt Roskill Avondale

The visualisation should have integrity

The representation of numbers, as physically measured on the surface of the graph itself, should be directly proportional to the numerical quantities represented

Clear, detailed and thorough labeling should be used to defeat graphical distortion and ambiguity.Write out explanations of the data on the graph itself. Label important events in the data.

Show data variation, not design variation.

In time-series displays of money, deflated and standardized units of monetary measurement are nearly always better than nominal units.

The number of information carrying (variable) dimensions depicted should not exceed the number of dimensions in the data. Graphics must not quote data out of context.

https://public.tableau.com/profile/ashley.pinto#!/vizhome/WhatAreImmigrantsDoinginMyCountry/Dashboard1?publish=yes

3. The visualisation should minimise graphical complexity

Data from: https://www.barfoot.co.nz/market-reports/2017/january/suburb-report

Average sale price

The visualisation should minimise graphical complexity

Data from: https://www.barfoot.co.nz/market-reports/2017/january/suburb-report

Data-ink ratio =

data-ink

Total ink used to print graphic

Average sale price

The visualisation should minimise graphical complexity

Suburb	Average sale price
Epsom	$1,776,750
Grey Lynn	$1,528,333
Ponsonby	$1,527,286
Mt Eden	$1,505,016
Pt Chevalier	$1,408,500
Westmere	$1,365,400
Sandringham	$1,336,746
Greenlane	$1,250,714
One Tree Hill	$1,245,035
Newmarket	$1,169,250
Royal Oak	$1,164,167
Mt Albert	$1,108,733
Three Kings	$1,081,375
Onehunga	$1,073,391
Hillsborough	$1,036,250
New Windsor	$994,771
Blockhouse Bay	$956,301
Mt Roskill	$917,668
Avondale	$881,000