Custom Separators Interval

The [ObservableObject], [ObservableProperty] and [RelayCommand] attributes come from the CommunityToolkit.Mvvm package, you can read more about it here.

This web site wraps every sample using a UserControl instance, but LiveCharts controls can be used inside any container.

sample image

View model

using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;

namespace ViewModelsSamples.Axes.CustomSeparatorsInterval;

public partial class ViewModel : ObservableObject
{
    public ISeries[] Series { get; set; } =
    {
        new LineSeries<int> { Values = new[] { 10, 55, 45, 68, 60, 70, 75, 78 } }
    };

    public Axis[] YAxes { get; set; } =
    {
        new Axis
        {
            // We can specify a custom separator collection
            // the library will use this separators instead of
            // calculating them based on the date of the chart
            CustomSeparators = new double[] { 0, 10, 25, 50, 100 },
            MinLimit = 0, // forces the axis to start at 0
            MaxLimit = 100, // forces the axis to end at 100
            SeparatorsPaint = new SolidColorPaint(SKColors.Black.WithAlpha(100))
        }
    };
}

LogarithmicPoint.cs

namespace ViewModelsSamples.Axes.Logarithmic;

public class LogarithmicPoint
{
    public double X { get; set; }
    public double Y { get; set; }
}

XAML

<UserControl x:Class="WinUISample.Axes.CustomSeparatorsInterval.View"
            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:lvc="using:LiveChartsCore.SkiaSharpView.WinUI"
            xmlns:vms="using:ViewModelsSamples.Axes.CustomSeparatorsInterval"
            mc:Ignorable="d">
    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>
    <lvc:CartesianChart
        Series="{Binding Series}"
        YAxes="{Binding YAxes}">
    </lvc:CartesianChart>
</UserControl>

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