TimeSpanScaleOptions.MeasureUnit Property

Gets or sets the detail level for time-span values.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v23.2.dll

NuGet Package: DevExpress.Charts

Declaration

C#

public TimeSpanMeasureUnit MeasureUnit { get; set; }

VB.NET

Public Property MeasureUnit As TimeSpanMeasureUnit

Property Value

Type	Description
TimeSpanMeasureUnit	A value that represents the axis detail level.

Available values:

Name	Description
Millisecond	Specifies a millisecond as the measurement unit for time-span values.
Second	Specifies a second as the measurement unit for time-span values.
Minute	Specifies a minute as the measurement unit for time-span values.
Hour	Specifies an hour as the measurement unit for time-span values.
Day	Specifies a day as the measurement unit for time-span values.

Property Paths

You can access this nested property as listed below:

Object Type	Path to MeasureUnit
AxisBase	.TimeSpanScaleOptions .MeasureUnit

Remarks

This property is available when the SeriesBase.ArgumentScaleType or SeriesBase.ValueScaleType property is set to TimeSpan, and the ScaleOptionsBase.ScaleMode property is set to Manual.

TimeSpanScaleOptions.MeasureUnit = Minute	TimeSpanScaleOptions.MeasureUnit = Hour

Note

To access TimeSpanScaleOptions, use the AxisBase.TimeSpanScaleOptions property.

To define a time-span measurement unit to which the beginning of a diagram’s gridlines and labels should be aligned, use the TimeSpanScaleOptions.GridAlignment property.

Example

The following example shows how to group minute-by-minute data into data points with a greater measurement unit (“Hour”).

To do this, you can use the following code:

C#

private void Form1_Load(object sender, EventArgs e) {
    XYDiagram diagram = chartControl1.Diagram as XYDiagram;
    if (diagram != null) {
        diagram.AxisX.TimeSpanScaleOptions.ScaleMode = ScaleMode.Manual;
        diagram.AxisX.TimeSpanScaleOptions.MeasureUnit = TimeSpanMeasureUnit.Hour;
        diagram.AxisX.TimeSpanScaleOptions.AggregateFunction = AggregateFunction.Average;
        diagram.AxisX.TimeSpanScaleOptions.GridSpacing = 6;
        diagram.AxisX.TimeSpanScaleOptions.GridAlignment = TimeSpanGridAlignment.Hour;
    }             
}

VB.NET

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim diagram As XYDiagram = TryCast(chartControl1.Diagram, XYDiagram)
    If diagram IsNot Nothing Then
        diagram.AxisX.TimeSpanScaleOptions.ScaleMode = ScaleMode.Manual
        diagram.AxisX.TimeSpanScaleOptions.MeasureUnit = TimeSpanMeasureUnit.Hour
        diagram.AxisX.TimeSpanScaleOptions.AggregateFunction = AggregateFunction.Average
        diagram.AxisX.TimeSpanScaleOptions.GridSpacing = 6
        diagram.AxisX.TimeSpanScaleOptions.GridAlignment = TimeSpanGridAlignment.Hour
    End If
End Sub

The example uses the following API members:

Member	Description
ScaleOptionsBase.ScaleMode	Gets or sets the scale mode for an axis.
TimeSpanScaleOptions.MeasureUnit	Gets or sets the detail level for time-span values.
ScaleGridOptionsBase.AggregateFunction	Gets or sets the value indicating the aggregate function that should be used to relieve data.
ScaleGridOptionsBase.GridSpacing	Gets or sets the interval between grid lines and major tickmarks.