Basic Heat
Hover over the image to see the chart animation
The [ObservableObject]
, [ObservableProperty]
and [RelayCommand]
attributes come from the
CommunityToolkit.Mvvm package, you can read more about it
here.
View Model
using System.Collections.ObjectModel;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;
using SkiaSharp;
namespace ViewModelsSamples.Heat.Basic;
public partial class ViewModel : ObservableObject
{
public ISeries[] Series { get; set; } =
{
new HeatSeries<WeightedPoint>
{
HeatMap = new[]
{
new SKColor(255, 241, 118).AsLvcColor(), // the first element is the "coldest"
SKColors.DarkSlateGray.AsLvcColor(),
SKColors.Blue.AsLvcColor() // the last element is the "hottest"
},
Values = new ObservableCollection<WeightedPoint>
{
// Charles
new(0, 0, 150), // Jan
new(0, 1, 123), // Feb
new(0, 2, 310), // Mar
new(0, 3, 225), // Apr
new(0, 4, 473), // May
new(0, 5, 373), // Jun
// Richard
new(1, 0, 432), // Jan
new(1, 1, 312), // Feb
new(1, 2, 135), // Mar
new(1, 3, 78), // Apr
new(1, 4, 124), // May
new(1, 5, 423), // Jun
// Ana
new(2, 0, 543), // Jan
new(2, 1, 134), // Feb
new(2, 2, 524), // Mar
new(2, 3, 315), // Apr
new(2, 4, 145), // May
new(2, 5, 80), // Jun
// Mari
new(3, 0, 90), // Jan
new(3, 1, 123), // Feb
new(3, 2, 70), // Mar
new(3, 3, 123), // Apr
new(3, 4, 432), // May
new(3, 5, 142), // Jun
},
}
};
public Axis[] XAxes { get; set; } =
{
new Axis
{
Labels = new[] { "Charles", "Richard", "Ana", "Mari" }
}
};
public Axis[] YAxes { get; set; } =
{
new Axis
{
Labels = new[] { "Jan", "Feb", "Mar", "Apr", "May", "Jun" }
}
};
}
XAML
<UserControl
x:Class="WinUISample.Heat.Basic.View"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:lvc="using:LiveChartsCore.SkiaSharpView.WinUI"
xmlns:vms="using:ViewModelsSamples.Heat.Basic"
mc:Ignorable="d">
<UserControl.DataContext>
<vms:ViewModel/>
</UserControl.DataContext>
<Grid>
<lvc:CartesianChart
Series="{Binding Series}"
XAxes="{Binding XAxes}"
YAxes="{Binding YAxes}">
</lvc:CartesianChart>
</Grid>
</UserControl>