Specifying How Excel Plots Empty Cells

When you create a chart from a data table, Excel does its best to translate the numeric values into data points on a chart, according to the specifications you provide. One area where Excel doesn't quite know what to do, however, is empty cells. If a cell is empty, it could be for any number of reasons—the value isn't available, the value isn't important, or the value is really zero.

You can instruct the program how you want it to treat empty cells by following these steps:

1. Select the chart you want to affect.
2. Display the Design tab of the ribbon.
3. In the Data group click the Select Data tool. Excel displays the Select Data Source dialog box. (Click here to see a related figure.)
4. Click the Hidden and Empty Cells button. Excel displays the Hidden and Empty Cells dialog box. (Click here to see a related figure.)
5. Using the controls in the dialog box, specify how you want Excel to chart empty cells.
6. Click OK to close the Hidden and Empty Cells dialog box.
7. Click OK to close the Select Data Source dialog box.

The option buttons at the top of the Hidden and Empty Cells dialog box (step 5) provide three different settings:

• Gaps. Excel leaves gaps in the chart where the empty cells appear.
• Zero. Excel treats the empty cells as if they contained zero values, and plots accordingly.
• Connect Data Points with Line. Excel examines the values surrounding the empty cell, guesses what the cell value should have been, and then connects the data points with a line.