Gets or sets whether the Scale is Logarithmic or not. A Logarithmic Scale is a scale of measurement that uses the logarithm of a physical quantity instead of the quantity itself. If your data span a wide range of values, it can be easier to visualize the results when you make the Scale logarithmic. If you take 10 to the third power (10 x 10 x 10) the result is 1000. The logarithm is the inverse of that power function. The logarithm (base 10) of 1000 is the power of 10 that gives the answer 1000. So the logarithm of 1000 is 3. In case of Logarithmic axis, Interval value will be the difference between the power of LogarithmBase for two successive log values in Axis.


Type: Boolean

Namespace: Visifire.Gauges



SLVisifire.Gauges (in SLVisifire.Gauge.dll)


WPFVisifire.Gauges (in WPFVisifire.Gauge.dll)

Windows Phone:

SLWpVisifire.Gauges (in SLWpVisifire.Gauges.dll)

Windows 8:

Win8Visifire.Gauges (in Win8Visifire.Gauges.dll)


This attribute applies to:



<vg:Gauge... >


<vg:CircularScale Logarithmic="True" />




Below is the gauge after setting Logarithmic property in CircularScale. The default value for LogarithmBase is 10.






  1. The default value is True.

  2. If Logarithmic property is set to True then Indicator's value should always be positive. Negative or zero values cannot be plotted correctly on logarithmic plots.