.NET Framework 4.5.2+

# AxisScaling.LogBase Property

Gets or sets a value specifying a logarithmic base for the logarithmic axis.

## Declaration

``double LogBase { get; set; }``

## Property Value

Type Description
Double

A Double value that is the logarithmic base. This value must be greater than or equal to two.

## Remarks

If the AxisScaling.LogScale property is set to true, use the LogBase property to specify the logarithmic base.

With the LogBase property, you can define a base value as a logarithm that will be used to calculate the axis values.

The images in the table below demonstrate how the LogBase property works.

LogBase = 10 LogBase = 20

## Example

The example below demonstrates how to create a simple line chart and change the value axis to logarithmic using the AxisScaling.LogScale property. The logarithmic base, defined by the `AxisScaling.LogBase` property, is set to 10.

``````Dim worksheet As Worksheet = workbook.Worksheets("chartTask5")
workbook.Worksheets.ActiveWorksheet = worksheet

' Create a chart and specify its location.
Dim chart As Chart = worksheet.Charts.Add(ChartType.Line, worksheet("B2:D8"))
chart.TopLeftCell = worksheet.Cells("F2")
chart.BottomRightCell = worksheet.Cells("L15")

' Set the logarithmic(Log10) type of scale.
chart.PrimaryAxes(1).Scaling.LogScale = True
chart.PrimaryAxes(1).Scaling.LogBase = 10

' Set the position of the legend on the chart.
chart.Legend.Position = LegendPosition.Bottom
``````

The following code snippets (auto-collected from DevExpress Examples) contain references to the LogBase property.

Note

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