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AxisScaling.LogBase Property

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

Namespace: DevExpress.Spreadsheet.Charts

Assembly: DevExpress.Spreadsheet.v24.1.Core.dll

NuGet Package: DevExpress.Spreadsheet.Core

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
SpreadsheetChart_LocarithmicChartBase10 SpreadsheetChart_LocarithmicChartBase20

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.

View Example

Worksheet worksheet = workbook.Worksheets["chartTask5"];
workbook.Worksheets.ActiveWorksheet = worksheet;

// Create a chart and specify its location.
Chart 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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See Also