Four types Data maps (17-19, Tufte, also History of the World in 100 Seconds)History of the World in 100 Seconds Time series Narrative graphics of space and time (next slide) Relational graphics (47 & 50, Tufte)

6 Principles of Graphical Excellence Napoleon’s March: The Greatest Graphic of All Time Napoleon’s March 1.GE is the well-designed presentation of interesting data – a matter of substance, of statistics, and design. 2.GE consists of complex ideas communicated with clarity, precision, and efficiency 3.GE is that which gives the viewer the greatest number of ideas in the shortest time with the least ink in the smallest space. 4.GE is nearly always multivariate. 5.Requires telling the truth about the data.

Six principles of graphic integrity The representation of numbers, as physically measured on the surface of the graphic itself, should be directly proportional to the numerical qualities represented. Clear, detailed and thorough labeling should be used to defeat graphical distortion and ambiguity. Write out explanations of the data on the graphic 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.

Data Visualization Who Rules America? From Wisconsin to Planned Parenthood, it comes down to this: the top 1% of the country controls 34% of the wealth--and the top 20%, a whopping 85%. That leaves 80%--the rest of us--to fight with each other for the table scraps of the remaining 15%, in jobs for companies whose execs earn several hundred times more than their average employee. This isn't rich versus poor. 'Versus' suggests a contest. There is none.

– The myth of the American middle class (we're all middle class and could be millionaires at any minute) is like a gigantic pair of collective cultural beer goggles that we can't seem to take off. To put those numbers in beer terms. You host a party with a hundred guests, and you have 100 bottles of beer. To one guest, you give 35 of the beers. To the next 19, you let them divvy up another 50, a little better than 2 beers a person (assuming equal distribution). That leaves 15 beers split amongst 80 people. Again assuming equal distribution of 12oz bottles, that's about 2 and a quarter *ounces* of beer. Per guest. Good thing you bought the little mouthwashed-sized cups.

Scavenger hunt