Slim Gauge

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 ContentPage instance, but LiveCharts controls can be used inside any container.

sample image

View model

using System.Collections.Generic;
using LiveChartsCore;
using LiveChartsCore.Measure;
using LiveChartsCore.SkiaSharpView;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore.SkiaSharpView.Extensions;
using LiveChartsCore.Defaults;

namespace ViewModelsSamples.Pies.Gauge4;

public partial class ViewModel : ObservableObject
{
    public IEnumerable<ISeries> Series { get; set; } =
        GaugeGenerator.BuildSolidGauge(
                new GaugeItem(50, series => SetStyle("Vanessa", series)),
                new GaugeItem(80, series => SetStyle("Charles", series)),
                new GaugeItem(95, series => SetStyle("Ana", series)),
                new GaugeItem(GaugeItem.Background, series =>
                {
                    series.Fill = null;
                }));

    public static void SetStyle(string name, PieSeries<ObservableValue> series)
    {
        series.Name = name;
        series.DataLabelsSize = 20;
        series.DataLabelsPosition = PolarLabelsPosition.End;
        series.DataLabelsFormatter =
                point => point.Coordinate.PrimaryValue.ToString();
        series.InnerRadius = 20;
        series.MaxRadialColumnWidth = 5;
    }
}

XAML

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="XamarinSample.Pies.Gauge4.View"
             xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.Xamarin.Forms;assembly=LiveChartsCore.SkiaSharpView.XamarinForms"
             xmlns:vms="clr-namespace:ViewModelsSamples.Pies.Gauge4;assembly=ViewModelsSamples">
    <ContentPage.BindingContext>
        <vms:ViewModel/>
    </ContentPage.BindingContext>
    <lvc:PieChart
        Series="{Binding Series}"
        InitialRotation="-90"
        MaxAngle="350"
        MinValue="0"
        MaxValue="100">
    </lvc:PieChart>
</ContentPage>

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