The Excel Optical Illusion this week looks easy, but it takes more work than what one might think:
Do you see a room with a cube in the corner? Or do you see a cube with its bottom-front corner missing? How fast can you switch back and forth?
You might think this can be done with a 3d chart. Nope.
To make this I used the same technique of layering series in an Area chart that I used to make the 42 flags in the Eurovision 2009
project and the American flag in the Flag Project
All of the data for this chart is held as array constants within the chart series, and so no worksheet cells or named formulas are used.
I'll have another Excel based optical illusion next Friday.
The file should work in all versions of Excel.
Here's the workbook:
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