Custom S V G Scatter Points

The [ObservableObject], [ObservableProperty] and [ICommand] 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 System;
using System.Collections.ObjectModel;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Drawing.Geometries;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;

namespace ViewModelsSamples.Scatter.Custom;

[ObservableObject]
public partial class ViewModel
{
    public ViewModel()
    {
        var r = new Random();
        var values1 = new ObservableCollection<ObservablePoint>();
        var values2 = new ObservableCollection<ObservablePoint>();

        for (var i = 0; i < 20; i++)
        {
            values1.Add(new ObservablePoint(r.Next(0, 20), r.Next(0, 20)));
            values2.Add(new ObservablePoint(r.Next(0, 20), r.Next(0, 20)));
        }

        Series = new ISeries[]
        {
            // use the second type argument to specify the geometry to draw for every point
            // there are already many predefined geometries in the
            // LiveChartsCore.SkiaSharpView.Drawing.Geometries namespace
            new ScatterSeries<ObservablePoint, RoundedRectangleGeometry>
            {
                Values = values1,
                Stroke = null,
                GeometrySize = 40,
            },

            // Or Define your own SVG geometry
            new ScatterSeries<ObservablePoint, MyGeometry>
            {
                Values = values2,
                GeometrySize = 40,
                Stroke = null,
                Fill = new SolidColorPaint(SKColors.DarkOliveGreen)
            }
        };
    }

    public ISeries[] Series { get; set; }
}

MyGeometry.cs

using LiveChartsCore.SkiaSharpView.Drawing.Geometries;
using SkiaSharp;

namespace ViewModelsSamples.Scatter.Custom;

public class MyGeometry : SVGPathGeometry
{
    // the static field is important to prevent the svg path is parsed multiple times // mark
    // Icon from Google Material Icons font.
    // https://fonts.google.com/icons?selected=Material%20Icons%20Outlined%3Amy_location%3A
    public static SKPath svgPath = SKPath.ParseSvgPathData(
        "M12 8c-2.21 0-4 1.79-4 4s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm8.94 3c-.46-4.17-3.77-7.48-7.94-7.94V1h-2v2.06C6.83 3.52 3.52 6.83 3.06 " +
        "11H1v2h2.06c.46 4.17 3.77 7.48 7.94 7.94V23h2v-2.06c4.17-.46 7.48-3.77 7.94-7.94H23v-2h-2.06zM12 19c-3.87 0-7-3.13-7-7s3.13-7 7-7 7 " +
        "3.13 7 7-3.13 7-7 7z");

    public MyGeometry()
        : base(svgPath)
    { }
}

XAML

<UserControl x:Class="WPFSample.Scatter.Custom.View"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.WPF;assembly=LiveChartsCore.SkiaSharpView.WPF"
             xmlns:vms="clr-namespace:ViewModelsSamples.Scatter.Custom;assembly=ViewModelsSamples">
    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <lvc:CartesianChart Series="{Binding Series}"></lvc:CartesianChart>
    </Grid>
</UserControl>

Articles you might also find useful:

Cartesian chart control
Scatter series properties