Time Span Scale

sample image

View model

using System;
using System.Collections.ObjectModel;
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;

namespace ViewModelsSamples.Axes.TimeSpanScaled;

[ObservableObject]
public partial class ViewModel
{
    public ISeries[] Series { get; set; } =
    {
        new ColumnSeries<TimeSpanPoint>
        {
            Values = new ObservableCollection<TimeSpanPoint>
            {
                new TimeSpanPoint(TimeSpan.FromMilliseconds(1), 10),
                new TimeSpanPoint(TimeSpan.FromMilliseconds(2), 6),
             // new TimeSpanPoint(TimeSpan.FromMilliseconds(3), 3),
                new TimeSpanPoint(TimeSpan.FromMilliseconds(4), 12),
                new TimeSpanPoint(TimeSpan.FromMilliseconds(5), 8),
            },
        }
    };

    public Axis[] XAxes { get; set; } =
    {
        new Axis
        {
            Labeler = value => TimeSpan.FromTicks((long)value).ToString("fff") + " ms",

            // when using a date time type, let the library know your unit // mark
            UnitWidth = TimeSpan.FromMilliseconds(1).Ticks, //mark

            // if the difference between our points is in hours then we would:
            // UnitWidth = TimeSpan.FromHours(1).Ticks,

            // since all the months and years have a different number of days
            // we can use the average, it would not cause any visible error in the user interface
            // Months: TimeSpan.FromDays(30.4375).Ticks
            // Years: TimeSpan.FromDays(365.25).Ticks

            // The MinStep property forces the separator to be greater than 1 ms.
            MinStep = TimeSpan.FromMilliseconds(1).Ticks, // mark
        }
    };
}

<UserControl x:Class="UnoWinUISample.Axes.TimeSpanScaled.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.Uno.WinUI"
            xmlns:vms="using:ViewModelsSamples.Axes.TimeSpanScaled"
            mc:Ignorable="d">
    <UserControl.DataContext>
        <vms:ViewModel/>
    </UserControl.DataContext>
    <lvc:CartesianChart
        Series="{Binding Series}"
        XAxes="{Binding XAxes}">
    </lvc:CartesianChart>
</UserControl>

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