Hi FN,
I think what you're trying to achieve look like a mekko bar chart.
I don't know the answer to realize a similar chart as in your example on JMP, but a similar topic and interest was brought here : Mekko Bar chart JMP
It may be possible to use stacked bar chart instead, mosaic plot, or one of the solutions provided on the topic above :)
I hope it will help you,
Victor
Victor GUILLER
"It is not unusual for a well-designed experiment to analyze itself" (Box, Hunter and Hunter)