Date Time Scale
This sample uses C# 12 features, it also uses features from the CommunityToolkit.Mvvm package, you can learn more about it here.
This web site wraps every sample using a UserControl instance, but LiveCharts controls can be used inside any container.
View model
using System;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.Kernel.Sketches;
using LiveChartsCore.SkiaSharpView;
namespace ViewModelsSamples.Axes.DateTimeScaled;
public class ViewModel
{
public ISeries[] Series { get; set; } = [
new ColumnSeries<DateTimePoint>
{
Values = [
new() { DateTime = new(2021, 1, 1), Value = 3 },
new() { DateTime = new(2021, 1, 2), Value = 6 },
new() { DateTime = new(2021, 1, 3), Value = 5 },
new() { DateTime = new(2021, 1, 4), Value = 3 },
new() { DateTime = new(2021, 1, 5), Value = 5 },
new() { DateTime = new(2021, 1, 6), Value = 8 },
new() { DateTime = new(2021, 1, 7), Value = 6 }
]
}
];
// You can use the DateTimeAxis class to define a date time based axis // mark
// The first parameter is the time between each point, in this case 1 day // mark
// you can also use 1 year, 1 month, 1 hour, 1 minute, 1 second, 1 millisecond, etc // mark
// The second parameter is a function that receives a date and returns the label as string // mark
public ICartesianAxis[] XAxes { get; set; } = [
new DateTimeAxis(TimeSpan.FromDays(1), date => date.ToString("MMMM dd"))
];
}
XAML
<UserControl x:Class="UnoWinUISample.Axes.DateTimeScaled.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.Axes.DateTimeScaled"
mc:Ignorable="d">
<UserControl.DataContext>
<vms:ViewModel/>
</UserControl.DataContext>
<lvc:CartesianChart
Series="{Binding Series}"
XAxes="{Binding XAxes}">
</lvc:CartesianChart>
</UserControl>
