You can change the chart type at any time in Keynote. All you need to do is select the chart and then choose from the chart type pop-up menu in the Chart Inspector.
To change the chart type
1.
Select a chart on the Slide Canvas.
2.
In the Chart Inspector, choose a new chart type from the pop-up menu.
or
Choose Format > Chart > Chart Type >, then choose one of the chart types from the hierarchical menu.
The chart changes ( Figure 8.13 ). The Chart Inspector also changes, to show options appropriate to the new chart types.
Figure 8.13. When you change the chart type from column (top) to line (bottom), the Chart Inspector reflects the change.