Polar Coordinates
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 ContentPage instance, but LiveCharts controls can be used inside any container.
View model
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;
using CommunityToolkit.Mvvm.ComponentModel;
namespace ViewModelsSamples.Polar.Coordinates;
public partial class ViewModel : ObservableObject
{
public ISeries[] Series { get; set; } =
{
new PolarLineSeries<ObservablePolarPoint>
{
Values = new[]
{
new ObservablePolarPoint(0, 10),
new ObservablePolarPoint(45, 15),
new ObservablePolarPoint(90, 20),
new ObservablePolarPoint(135, 25),
new ObservablePolarPoint(180, 30),
new ObservablePolarPoint(225, 35),
new ObservablePolarPoint(270, 40),
new ObservablePolarPoint(315, 45),
new ObservablePolarPoint(360, 50),
},
IsClosed = false,
Fill = null
}
};
public PolarAxis[] AngleAxes { get; set; } =
{
new PolarAxis
{
// force the axis to always show 360 degrees.
MinLimit = 0,
MaxLimit = 360,
Labeler = angle => $"{angle}°",
ForceStepToMin = true,
MinStep = 30
}
};
}
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.Polar.Coordinates.View"
xmlns:lvc="clr-namespace:LiveChartsCore.SkiaSharpView.Xamarin.Forms;assembly=LiveChartsCore.SkiaSharpView.XamarinForms"
xmlns:vms="clr-namespace:ViewModelsSamples.Polar.Coordinates;assembly=ViewModelsSamples">
<ContentPage.BindingContext>
<vms:ViewModel/>
</ContentPage.BindingContext>
<lvc:PolarChart Series="{Binding Series}" AngleAxes="{Binding AngleAxes}" />
</ContentPage>
