Switch Rows and Columns in a PowerPoint 2007 Chart
The first control in the PowerPoint Data group is called Switch Row/Column. It changes the orientation of your PowerPoint chart in a way that can be difficult to describe but easy to visualize. Look at this chart.
It is based on the following data:
The rows are used to determine the data categories. Thus, the chart displays the data for Instruments, Music, and Uniforms along the horizontal axis.
If you click the Switch Row/Column button, the chart changes. Here, the chart categorizes the data by city, so sales for River City, Pixley, and Hooterville are shown along the horizontal axis.