Grid on the left, chart wizard on the right. The wizard builds a chart from the grid rows via rowsToChartSpec: pick the type from a gallery (whose thumbnails are themselves live mini SvGridChart instances), choose group-by + measure + aggregation, and a palette. Column, Bar (horizontal), Line, Area, Pie with stacked / 100% variants. Drag a cell range or tick row checkboxes to chart just the selection; otherwise the whole filtered / sorted set re-aggregates live.