The best chart is always task-dependent, but let me assume that you would choose the scatterplot as the best chart and the pie as the worst. They are like water and oil: impossible to mix [...]
(...) On the top of the mountain was a plain. There stood an old stone house, and in front of the house lay a great fish-pond, but behind it was a dark forest. He saw neither men [...]
Well, a data visualization book cannot avoid pie charts, so here it is, a page about pie charts for my tutorial Data Visualization for Excel Users. Enjoy and comment, please...
We stop loving someone or something when we feel there is nothing more to discover, when we have no more questions, when we don't care about the answers. I started writing my Data Visualization for [...]
A new page for my tutorial Data Visualization for Excel Users is available. It's about Gestalt laws. Don't forget to leave a comment!
Here is an interesting technique: using two y-axis to display the same data at different resolutions. Yellow (BMI) and blue (Weight) lines should overlap (there is a one-to-one correspondence between BMI and Weight [...]