ContinuousNumericScaleOptions.GridAlignmentStartPoint Property

Specifies the start point for aligning the scale along the x-axis.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v23.2.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#

public NumericStartPoint GridAlignmentStartPoint { get; set; }

VB.NET

Public Property GridAlignmentStartPoint As NumericStartPoint

Property Value

Type	Description
NumericStartPoint	The start point for aligning the scale along the x-axis.

Available values:

Name	Description
Zero	The alignment of the chart x-axis scale starts at zero.
MinRangeValue	The alignment of the chart x-axis scale starts at the specified Range.MinValue property value.

Property Paths

You can access this nested property as listed below:

Object Type	Path to GridAlignmentStartPoint
AxisY2D	.NumericScaleOptions .GridAlignmentStartPoint
AxisY3D	.NumericScaleOptions .GridAlignmentStartPoint
CircularAxisY2D	.NumericScaleOptions .GridAlignmentStartPoint
ZAxis3D	.NumericScaleOptions .GridAlignmentStartPoint

Remarks

The example below illustrates the use of the GridAlignmentStartPoint property.

When you select the NumericStartPoint.Zero property value, the x-axis scale alignment starts at zero:

When you select NumericStartPoint.MinRangeValue property value, the x-axis scale alignment starts at the specified Range.MinValue property value. The MinValue property of the chart below is set to 1.

The following code configures the axis scale settings to resemble the chart above:

MainViewModel.cs

using System;
using System.Collections.ObjectModel;
using System.Windows;

namespace WpfApp {

    public partial class MainWindow : Window {

        public ObservableCollection<Point> Data { get; }

        public MainWindow() {
            InitializeComponent();
            Data = GenerateData(20);
            DataContext = this;
        }

        private void Button_Click(object sender, RoutedEventArgs e) {
            CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.MinRangeValue;
        }

        private void Button_Click_1(object sender, RoutedEventArgs e) {
             CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.Zero;
        }
        ObservableCollection<Point> GenerateData(int pointCount) {
            ObservableCollection<Point> res = new ObservableCollection<Point>();
            Random generator = new Random(0);
            for(int i = 0; i < pointCount; ++i)
                res.Add(new Point((i), generator.Next(10)));
            return res;
        }
    }
}

MainViewModel.vb

Imports System
Imports System.Collections.ObjectModel
Imports System.Windows

Namespace WpfApp

    Partial Public Class MainWindow
        Inherits Window

        Public ReadOnly Property Data() As ObservableCollection(Of Point)

        Public Sub New()
            InitializeComponent()
            Data = GenerateData(20)
            DataContext = Me
        End Sub

        Private Sub Button_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
            CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.MinRangeValue
        End Sub

        Private Sub Button_Click_1(ByVal sender As Object, ByVal e As RoutedEventArgs)
             CNSO.GridAlignmentStartPoint = DevExpress.Xpf.Charts.NumericStartPoint.Zero
        End Sub
        Private Function GenerateData(ByVal pointCount As Integer) As ObservableCollection(Of Point)
            Dim res As New ObservableCollection(Of Point)()
            Dim generator As New Random(0)
            For i As Integer = 0 To pointCount - 1
                res.Add(New Point((i), generator.Next(10)))
            Next i
            Return res
        End Function
    End Class
End Namespace

MainWindow.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp10"
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts" x:Class="WpfApp.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <dxc:ChartControl>
            <dxc:XYDiagram2D>
                <dxc:XYDiagram2D.AxisX>
                    <dxc:AxisX2D x:Name="AX">
                        <dxc:AxisX2D.WholeRange>
                            <dxc:Range MinValue="1" StartSideMargin="0" EndSideMargin="0"/>
                        </dxc:AxisX2D.WholeRange>
                        <dxc:AxisX2D.NumericScaleOptions>
                            <dxc:ContinuousNumericScaleOptions x:Name="CNSO" AutoGrid="False" GridSpacing="1" GridAlignment="1.31"/>
                        </dxc:AxisX2D.NumericScaleOptions>
                    </dxc:AxisX2D>
                </dxc:XYDiagram2D.AxisX>
                <dxc:BarSideBySideSeries2D DataSource="{Binding Data}" ArgumentDataMember="X" ValueDataMember="Y"/>
            </dxc:XYDiagram2D>
        </dxc:ChartControl>
        <Button Content="MinRangeValue" HorizontalAlignment="Left" Margin="80,0,0,0" VerticalAlignment="Top" Width="107" Click="Button_Click"/>
        <Button Content="Zero" HorizontalAlignment="Left" Margin="231,0,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1" RenderTransformOrigin="-2.68,-4.142"/>
    </Grid>
</Window>