This example uses an animated stacked bar chart to illustrate the distribution of project funding items across different institution types in 2018. The chart displays grouped data by segment and sub-category, with interactive hover effects that highlight specific categories and tooltips revealing exact sales figures. The visualization is built with D3.js, utilizing `d3.layout.stack` for the stacked bar layout, `d3.svg.axis` for axes, and `d3.legend.color` for the interactive legend that filters which sub-category bars are prominently shown. The data is sourced from a CSV file containing sales records sorted by segment and sub-category.