Chandoo at Pointy Haired Dilbert has a post about the inadequacies of radar, or spider, charts; using a sample of four (software?) options to be selected, and six scores by various criteria, he presents them as a radar chart:
Not very informative. So he tries it as a "petal chart"
Still not showing much. The circular formats of radar and petal charts don't really add value in this case, since we expect to be able to sort best from worst, and we don't really care if the best comes round to meet the worst, like the worm Ouroboros chomping on its own tail.
Bertin says every graph is just a table really: this is the table in question:
So why not just show it as a table?
I've re-ordered the criteria and options to show a rough diagonal trend. The criteria are obviously re-orderable categories, and I assume the options are, even though they're numbered 1-4. I take it that's just anonymising. Clearly Option 1 is the package for you if performance and scalability are what you're looking for, while you should consider option 2 if you really care about usability and flexibility. Sometimes the options in the middle excel at some crieria in the middle, but in this case options 3 and 4 don't really have anything to offer against the all-round competence of option 1.
The spot matrix is a favourite of mine, and does appear in Semiologie graphique, but Bertin more frequently shows his tables as a stacked bar chart:
Finally, has re-ordering helped the spider?
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