I would also like to see this incorporated into Tableau.
I can get you close with a Marimekko Chart, example in Tableau at:
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If you can provide a sample data set, like what was used to make the treemap image above, a dataset with a dimension/measure for each drop-down/slider, than I can show you an example of it in a Marimekko Chart.
Not exactly a treemap, but it would create a very dynamic Marimekko Chart.
John, that kb article is mislabeled, that is not a Marimekko chart, that is just a stacked bar chart.
The link I had originally posted over a year ago, was likely to another thread of someone asking for this chart type, and since then this form has generated a lot of bad links in its redesign process.
An example of a Marimekko chart in Tableau would be:
There are numerous issues with displaying data in this way, so likely not an ideal route to use in production, this is just a demonstration of what is possible in Tableau. There are likely better alternatives if you want to display this kind of data.
Do you need a treemap in Tableau? if you can preprocess your data, Tableau can draw a treemap, but not easily compute the coordinates because it requires recursion for ben-packing algorithms, so computing the date to get coordinates prior to Tableau enables you to draw a treemap in Tableau.
Joe, I do not need a treemap, just something I came across while trying to research another technique. But thanks for the info!