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document.write('<h5 align=center><a href=http://pubs.logicalexpressions.com/Pub0009/LPMArticle.asp?ID=508>Matrix Chart <i>(TechTrax Article)</i>.</a></h5>');
document.write('<p>Stacked column charts are commonly used to display proportions of data across different categories. While the size of each stack is proportional to the breakdown of the data in one dimension, standard stacked charts have uniform column widths. A matrix chart, also called a Marimekko chart, enhances a stacked column chart by making the column widths or bar heights proportional to another variable.</p>');
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