XYDiagram2D Class
Represents the diagram type that is used to construct 2D XY chart types.
Namespace: DevExpress.XtraCharts
Assembly: DevExpress.XtraCharts.v20.1.dll
NuGet Packages: DevExpress.Charts, DevExpress.WindowsDesktop.Charts
Declaration
public abstract class XYDiagram2D :
Diagram,
IDisposable,
IIndicatorCalculator,
IXYDiagram,
IDiagram,
IXYDiagram2D,
IAxisProvider,
IXtraSupportDeserializeCollectionItem,
IScrollingZoomingOptions,
ISupportRangeControlRemarks
The XYDiagram2D class represents the diagram type used to plot series which are displayed using the X and Y axes. These include all 2D view types (including both the Gantt and Swift Plot series), except for the Pie, Doughnut and Funnel, and Radar (Polar) series views.
In addition to the settings inherited from the base Diagram class, the XYDiagram2D class implements specific properties that allow you to control the following characteristics of a diagram.
- properties of the default and additional panes (XYDiagram2D.DefaultPane, XYDiagram2D.Panes, XYDiagram2D.PaneDistance and XYDiagram2D.PaneLayoutDirection);
- properties that enable a diagram’s scrolling (XYDiagram2D.EnableAxisXScrolling and XYDiagram2D.EnableAxisYScrolling) and zooming (XYDiagram2D.EnableAxisXZooming and XYDiagram2D.EnableAxisYZooming);
- a diagram’s margins (XYDiagram2D.Margins).
An object of the XYDiagram2D type can be accessed via the ChartControl.Diagram property of a chart control that displays series compatible with this diagram type.
Example
This example demonstrates how you can individually adjust scrolling along the required axes. A chart with two panes is used to demonstrate this feature.
In this example, a chart with two series is created. The second series is assigned to an additional pane.
In addition, to show scrolling bars along axes, the axis whole range and axis visible range is specified and the ScrollingOptions2D.UseScrollBars property is set to true. To learn more on axis ranges, refer to Visual Ranges and Whole Ranges .
To specify scrolling along the axes of the diagram’s panes, the XYDiagram2D.EnableAxisXScrolling and XYDiagram2D.EnableAxisYScrolling properties are used.
For more information, refer to Zooming and Scrolling (2D XY-Charts).
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-individually-adjust-scrolling-along-the-axes-t218691
using DevExpress.Utils;
using DevExpress.XtraCharts;
using System;
using System.Windows.Forms;
namespace WindowsFormsApplication2 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) {
// Create a new Chart control and add it to the form.
ChartControl chart = new ChartControl();
chart.Dock = DockStyle.Fill;
this.Controls.AddRange(new Control[] { chart });
// Create a Bar series and add points to it.
Series series1 = new Series("Bar", ViewType.Bar);
series1.Points.Add(new SeriesPoint("A", new double[] { 10 }));
series1.Points.Add(new SeriesPoint("B", new double[] { 32 }));
series1.Points.Add(new SeriesPoint("C", new double[] { 44 }));
series1.Points.Add(new SeriesPoint("D", new double[] { 67 }));
// Create a Line series and add points to it.
Series series2 = new Series("Line", ViewType.Line);
series2.Points.Add(new SeriesPoint("A", new double[] { 15 }));
series2.Points.Add(new SeriesPoint("B", new double[] { 18 }));
series2.Points.Add(new SeriesPoint("C", new double[] { 21 }));
series2.Points.Add(new SeriesPoint("D", new double[] { 27 }));
// Add the series to the chart.
chart.Series.Add(series1);
chart.Series.Add(series2);
// Cast the chart's diagram to the XYDiagram type, to access its axes.
XYDiagram diagram = (XYDiagram)chart.Diagram;
// Add a new additional pane to the diagram.
diagram.Panes.Add(new XYDiagramPane("My Pane"));
// Assign the additional pane to the second series.
// Note that the created pane has the zero index in the collection,
// because the existing Default pane is a separate entity.
LineSeriesView myView = (LineSeriesView)series2.View;
myView.Pane = diagram.Panes[0];
// Define the whole range for the axes.
diagram.AxisX.WholeRange.Auto = false;
diagram.AxisX.WholeRange.SetMinMaxValues("A", "D");
diagram.AxisY.WholeRange.Auto = false;
diagram.AxisY.WholeRange.SetMinMaxValues(0, 70);
// Define the visible range for the axes.
diagram.AxisX.VisualRange.Auto = false;
diagram.AxisX.VisualRange.SetMinMaxValues("B", "C");
diagram.AxisY.VisualRange.Auto = false;
diagram.AxisY.VisualRange.SetMinMaxValues(7, 50);
// Specify the axes scrolling at the diagram's level.
diagram.EnableAxisXScrolling = true;
diagram.EnableAxisYScrolling = false;
// Individually specify the axes scrolling for the panes.
diagram.DefaultPane.EnableAxisXScrolling = DefaultBoolean.Default;
diagram.Panes[0].EnableAxisXScrolling = DefaultBoolean.False;
diagram.Panes[0].EnableAxisYScrolling = DefaultBoolean.True;
// Adjust how the scrolling can be performed.
diagram.ScrollingOptions.UseKeyboard = false;
diagram.ScrollingOptions.UseMouse = false;
diagram.ScrollingOptions.UseScrollBars = true;
}
}
}