linkagg - Linked Selection Across Aggregate Views

Brush a row-level display and see aggregate displays fill in proportion to the rows selected, with the row-to-group mapping retained. Aggregate views such as bar charts summarise many rows into one mark, so a selection made on individual rows is resolved back through the row to group mapping to fill each mark partially. Output is an 'htmlwidget' that works inside 'shiny' or as a single self-contained HTML file with no server, so an interactive figure can be archived or shared like a static one.