About tube, cone, and pyramid charts
Tube, cone, and pyramid charts are variations of the bar chart that display tubular, conical, and triangular risers instead of bars. You can specify unique riser types for each series in one chart. Use unique riser types to distinguish types of data. For example, use the bar riser to represent unit volume and the pyramid riser to represent dollar volume, as shown in Figure 20‑3.
Figure 20‑3 Bar-pyramid chart