James Eanes - VI 9
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James Eanes - VI8
James Eanes - VI 7 - Matrix View
James Eanes - VI 7 - Node-Link
James Eanes - VI5
I used Excel to demonstrate unjustified 3D (perspective distortion), using the passing yards data from the football dataset. The rule of thumb is to not use 3D unless it is justified, typically only in cases where there is a benefit in seeing the structure of a dataset (e.g., wind tunnel data; architectural designs; etc.). Using 3D without good reason can lead to problems understanding the data being visualized, inluding perspective distortion and occlusion.
The first figure below shows Excel's attempt at turning a simple line graph of passing yards into 3D; it clearly provides no additional value and distorts the line graph; specifically, it takes extra effort to verify the highest data values due to the angle of the axes. The second figure shows a standard line graph in Excel, which is simple, easy to understand, and all that is necessary for this data.
Unnecessary 3D in Excel
![unnecessary3d](https://cloud.githubusercontent.com/assets/16748863/13197882/c3322166-d7c8-11e5-8449-211d
James Eanes - VI4 - Identity as Spatial Region
This example is similar to the Identity as Color Hue example, but instead of changing the circle's color by identity, it changes the circle's radius.