Learn how you can change your existing PowerPoint charts to other types — for example, changing a column chart to an area chart. PowerPoint provides ample choices in chart types for almost every kind of graphical data representation. There are some basic chart types such as column, bar, line, pie, etc. — and advanced charts like radar, surface, bubble, doughnut, etc.
Follow these steps change the chart type in PowerPoint 2002 and 2003.

