corelibraries-devexpress-dot-xtracharts-dot-numericintervaloptions-8fc26ef5.md
Gets or sets the number of intervals when DivisionMode is Count.
Namespace : DevExpress.XtraCharts
Assembly : DevExpress.XtraCharts.v25.2.dll
NuGet Package : DevExpress.Charts
public int? Count { get; set; }
Public Property Count As Integer?
| Type | Description |
|---|---|
| Nullable<Int32> |
The integer that specifies the number of intervals.
|
You can access this nested property as listed below:
| Object Type | Path to Count |
|---|---|
| NumericScaleOptions |
.IntervalOptions .Count
|
This example demonstrates how to create a histogram chart with a given number of bins.
private void Form1_Load(object sender, EventArgs e) {
// Load data to a chart.
chartControl1.DataSource = LoadDataTableFromXml("..\\..\\Data\\CityWeather.xml", "CityWeather");
Series series = new Series();
series.ArgumentDataMember = "Temperature";
SideBySideBarSeriesView view = series.View as SideBySideBarSeriesView;
view.Border.Visibility = DevExpress.Utils.DefaultBoolean.True;
view.BarWidth = 1;
chartControl1.Series.Add(series);
// Configure histogram options.
XYDiagram diagram = chartControl1.Diagram as XYDiagram;
NumericScaleOptions scaleOptions = diagram.AxisX.NumericScaleOptions;
scaleOptions.AggregateFunction = AggregateFunction.Histogram;
scaleOptions.ScaleMode = ScaleMode.Interval;
scaleOptions.IntervalOptions.DivisionMode = IntervalDivisionMode.Count;
scaleOptions.IntervalOptions.Count = 5;
scaleOptions.IntervalOptions.GridLayoutMode = GridLayoutMode.GridAndLabelShifted;
diagram.AxisX.Label.TextPattern = "{A:F0}°C";
diagram.AxisX.GridLines.Visible = true;
}
static DataTable LoadDataTableFromXml(string fileName, string tableName) {
DataSet xmlDataSet = new DataSet();
xmlDataSet.ReadXml(fileName);
return xmlDataSet.Tables[tableName];
}
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
' Load data to a chart.
chartControl1.DataSource = LoadDataTableFromXml("..\..\Data\CityWeather.xml", "CityWeather")
Dim series As Series = New Series()
series.ArgumentDataMember = "Temperature"
Dim view As SideBySideBarSeriesView = TryCast(series.View, SideBySideBarSeriesView)
view.Border.Visibility = DevExpress.Utils.DefaultBoolean.[True]
view.BarWidth = 1
chartControl1.Series.Add(series)
' Configure histogram options.
Dim diagram As XYDiagram = TryCast(chartControl1.Diagram, XYDiagram)
Dim scaleOptions As NumericScaleOptions = diagram.AxisX.NumericScaleOptions
scaleOptions.AggregateFunction = AggregateFunction.Histogram
scaleOptions.ScaleMode = ScaleMode.Interval
scaleOptions.IntervalOptions.DivisionMode = IntervalDivisionMode.Count
scaleOptions.IntervalOptions.Count = 5
scaleOptions.IntervalOptions.GridLayoutMode = GridLayoutMode.GridAndLabelShifted
diagram.AxisX.Label.TextPattern = "{A:F0}°C"
diagram.AxisX.GridLines.Visible = True
End Sub
Private Shared Function LoadDataTableFromXml(ByVal fileName As String, ByVal tableName As String) As DataTable
Dim xmlDataSet As DataSet = New DataSet()
xmlDataSet.ReadXml(fileName)
Return xmlDataSet.Tables(tableName)
End Function
The following API members configure the histogram options:
| Member | Description |
|---|---|
| ScaleGridOptionsBase.AggregateFunction | Gets or sets the value indicating the aggregate function that should be used to relieve data. |
| ScaleOptionsBase.ScaleMode | Gets or sets the scale mode for an axis. |
| NumericScaleOptions.IntervalOptions | Stores options for numeric axis when its ScaleMode is Interval. |
| NumericIntervalOptions.DivisionMode | Specifies how to divide axis scale into intervals. |
NumericIntervalOptions.Count | Gets or sets the number of intervals when DivisionMode is Count. |
| NumericIntervalOptions.GridLayoutMode | Gets or sets the value that specifies the alignment of grid lines, major tickmarks and axis labels. |
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Count property.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
winforms-charts-plot-xy-series-with-histogram/CS/Form1.cs#L44
diagram.AxisX.NumericScaleOptions.IntervalOptions.GridLayoutMode = GridLayoutMode.GridShiftedLabelCentered;
diagram.AxisX.NumericScaleOptions.IntervalOptions.Count = BinCount;
diagram.AxisX.NumericScaleOptions.IntervalOptions.DivisionMode = IntervalDivisionMode.Count;
winforms-charts-plot-xy-series-with-histogram/VB/Form1.vb#L71
diagram.AxisX.NumericScaleOptions.IntervalOptions.GridLayoutMode = GridLayoutMode.GridShiftedLabelCentered
diagram.AxisX.NumericScaleOptions.IntervalOptions.Count = BinCount
diagram.AxisX.NumericScaleOptions.IntervalOptions.DivisionMode = IntervalDivisionMode.Count
See Also