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Naomi B.Robbins

Another problem is that the chart does not include all the major players. Tableau is the fastest growing BI software but is not on the list. Neither is Spotfire. It's not difficult to rank #1 if you leave out all who rank above you.

Jörgen Abrahamsson

The Florence Nightingale chart is not a spider chart. It is a polar area chart. It can sometimes(for very specific uses) be ok.
The so called Spider chart(BI Giants above) is almost never ok.
It is actually parallel coordinates that have been made circular.
Very few people know how to use parallel coordinates. The order of variables is all important. The areas and slopes that result from connecting values on the spider chart are just artefacts of this order. Making it circular induces a great cost in the ability to compare different values/shapes.

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