A convenient way to view many barcharts organized by two variables of data.
End of rows and columns are the aggregate datasets of those rows/columns.
forked from BBischof's block: Matrix of Grouped Barcharts with Aggregate Scatterplots
Modified http://d3js.org/d3.v4.min.js to a secure url
Modified http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js to a secure url
https://d3js.org/d3.v4.min.js
https://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js