Multiple Values 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.
View model
using System.Collections.Generic;
using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore.SkiaSharpView.Extensions;
using LiveChartsCore.Defaults;
using LiveChartsCore.Measure;
namespace ViewModelsSamples.Pies.Gauge3;
public partial class ViewModel : ObservableObject
{
public IEnumerable<ISeries> Series { get; set; } =
GaugeGenerator.BuildSolidGauge(
new GaugeItem(30, series => SetStyle("Vanessa", series)),
new GaugeItem(50, series => SetStyle("Charles", series)),
new GaugeItem(70, series => SetStyle("Ana", series)),
new GaugeItem(GaugeItem.Background, series =>
{
series.InnerRadius = 20;
}));
public static void SetStyle(string name, PieSeries<ObservableValue> series)
{
series.Name = name;
series.DataLabelsPosition = PolarLabelsPosition.Start;
series.DataLabelsFormatter =
point => $"{point.Coordinate.PrimaryValue} {point.Context.Series.Name}";
series.InnerRadius = 20;
series.RelativeOuterRadius = 8;
series.RelativeInnerRadius = 8;
}
}
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.Gauge3.View"
xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.Xamarin.Forms;assembly=LiveChartsCore.SkiaSharpView.XamarinForms"
xmlns:vms="clr-namespace:ViewModelsSamples.Pies.Gauge3;assembly=ViewModelsSamples">
<ContentPage.BindingContext>
<vms:ViewModel/>
</ContentPage.BindingContext>
<lvc:PieChart
Series="{Binding Series}"
InitialRotation="45"
MaxAngle="270"
MinValue="0"
MaxValue="100">
</lvc:PieChart>
</ContentPage>
