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                               Technique 23: Chart Customization Tricks
                     of the major vertical gridlines for the X axis clearly   When Excel adds a data table or displays val-
                     delineates the clusters with each data series.           ues as data labels in a chart, it formats these
                                                                              values exactly as they are in the worksheet
                                                                              itself. To apply a more compact number for-
                                                                              mat in these chart elements, you must assign
                                                                              the new truncated number format to the cells
                                                                              in the worksheet that contain the actually
                                                                              graphed numbers.

                                                                       Figure 23-10 shows the final version of the embed-
                                                                       ded Clustered Column chart. Here, along with the
                                                                       major X-axis gridlines and the minor Y-axis gridlines,
                                                                       I added a data table and removed the chart’s legend.
                                                                       Because the data table automatically includes the
                                                                       legend’s color keys as part of its row headings, there
                                                                       is no longer any need to give up any precious chart
                                                                       real estate to the legend. The final version of this
                     • Figure 23-9: Clustered Column chart after adding major  embedded chart maintains a balance between the
                                 X-axis and minor Y-axis gridlines.
                                                                       graphic and textual elements while at the same time
                                                                       is easy to read and to interpret.
                     When you’re dealing with a chart where displaying
                     the underlying numerical data visually represented
                     in the plot area is important to its understanding,
                     you have a couple of choices:

                           Display a data table that shows all the graphed
                           numbers in a standard row-and-column table for-
                           mat appearing immediately beneath the chart
                           area. To add a data table to a chart, just click the
                           Data Table button on the Chart toolbar.
                           Add data labels that display the numbers right
                           next to each data point in the graph. To display
                           the values as data labels, select the Data Labels
                           tab of Chart Options dialog box (Chart➪Chart
                           Options) and then select the Value check box  • Figure 23-10: Final Clustered Column chart after adding a
                           option.                                                 data table and removing the legend.
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