Graphics Programs Reference
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FIGurE 5-26 Final stacked area chart
CrEATE AN INTErACTIVE STACkED ArEA ChArT
One of the drawbacks to using stacked area charts is that they become
hard to read and practically useless when you have a lot of categories and
data points. The chart type worked for age breakdowns because there were
only five categories. Start adding more, and the layers start to look like thin
strips. Likewise, if you have one category that has relatively small counts,
it can easily get dwarfed by the more prominent categories. Making the
stacked area graph interactive, however, can help solve that problem.
You can provide a way for readers to search for categories and then adjust
the axis to zoom in on points of interest. Tooltips can help readers see
values in places that are too small to place labels. Basically, you can take
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