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How to: Specify a Logarithmic Scale (Reporting Services)

SQL Server 2008

If you have data that is logarithmically proportional, you may want to consider using a logarithmic scale on the chart. This helps improve the appearance of the chart by making your data more manageable. Most logarithmic scales use a base of 10.

This feature is only available on the value axis.

If your axis is logarithmic, all other properties relating to the axis will be scaled logarithmically. For example, if you specify a base-10 logarithmic scale on your axis, setting an axis interval of 2 will generate intervals in magnitudes of 10 to the power of 2, or 100. This means your axis values will read 1, 100, 10000, instead of the default result of 1, 10, 100, 1000, 10000.

To specify a logarithmic scale

  1. Right-click the y-axis of your chart, and click Axis Properties. The Axis Properties dialog box appears.

  2. In Axis Options, select Logarithmic scale.

  3. In the Logbase text box, type a positive value for the logarithmic base. If no value is specified, the logarithmic base defaults to 10.

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