Bubbles Or Weigthed Series

Notice this web site wraps every sample using the UserControl class, but LiveCharts controls can be used inside any container, this sample also follows a Model-View-* pattern.

sample image

View model

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Drawing.Geometries;

namespace ViewModelsSamples.Scatter.Bubbles;

public class ViewModel
    public ViewModel()
        var r = new Random();
        var values1 = new ObservableCollection<WeightedPoint>();
        var values2 = new ObservableCollection<WeightedPoint>();

        for (var i = 0; i < 8; i++)
            // the WeightedPoint has 3 properties, X, Y and Weight
            // we use the X and Y coordinates to position the point in the chart
            // the weight will be used by the library to define the size of the points

            // where the minimum weight will be the smallest point, and the max weight the biggest

            // for any weight between these limits the library
            // will interpolate lineally to determine the size of each point

            var x = r.Next(0, 20);
            var y = r.Next(0, 20);
            var w = r.Next(0, 100);

            values1.Add(new WeightedPoint(x, y, w));

            // we do the same for our seconds values collection.
            values2.Add(new WeightedPoint(r.Next(0, 20), r.Next(0, 20), r.Next(0, 100)));

        Series = new ObservableCollection<ISeries>
                new ScatterSeries<WeightedPoint>
                    Values = values1,
                    GeometrySize = 50,
                    MinGeometrySize = 5
                new ScatterSeries<WeightedPoint, RoundedRectangleGeometry>
                    Values = values2,
                    GeometrySize = 50,
                    MinGeometrySize = 5

    public IEnumerable<ISeries> Series { get; set; }


<UserControl x:Class="WPFSample.Scatter.Bubbles.View"
            <RowDefinition Height="*"/>
        <lvc:CartesianChart Series="{Binding Series}"></lvc:CartesianChart>

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