Multiple Axes
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 UserControl instance, but LiveCharts controls can be used inside any container.
View model
using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.Kernel.Sketches;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;
namespace ViewModelsSamples.Axes.Multiple;
public partial class ViewModel : ObservableObject
{
private static readonly SKColor s_blue = new(25, 118, 210);
private static readonly SKColor s_red = new(229, 57, 53);
private static readonly SKColor s_yellow = new(198, 167, 0);
public ISeries[] Series { get; set; } =
{
new LineSeries<double>
{
LineSmoothness = 1,
Name = "Tens",
Values = new double[] { 14, 13, 14, 15, 17 },
Stroke = new SolidColorPaint(s_blue, 2),
GeometrySize = 10,
GeometryStroke = new SolidColorPaint(s_blue, 2),
Fill = null,
ScalesYAt = 0 // it will be scaled at the Axis[0] instance // mark
},
new LineSeries<double>
{
Name = "Tens 2",
Values = new double[] { 11, 12, 13, 10, 13 },
Stroke = new SolidColorPaint(s_blue, 2),
GeometrySize = 10,
GeometryStroke = new SolidColorPaint(s_blue, 2),
Fill = null,
ScalesYAt = 0 // it will be scaled at the Axis[0] instance // mark
},
new LineSeries<double>
{
Name = "Hundreds",
Values = new double[] { 533, 586, 425, 579, 518 },
Stroke = new SolidColorPaint(s_red, 2),
GeometrySize = 10,
GeometryStroke = new SolidColorPaint(s_red, 2),
Fill = null,
ScalesYAt = 1 // it will be scaled at the YAxes[1] instance // mark
},
new LineSeries<double>
{
Name = "Thousands",
Values = new double[] { 5493, 7843, 4368, 9018, 3902 },
Stroke = new SolidColorPaint(s_yellow, 2),
GeometrySize = 10,
GeometryStroke = new SolidColorPaint(s_yellow, 2),
Fill = null,
ScalesYAt = 2 // it will be scaled at the YAxes[2] instance // mark
}
};
public ICartesianAxis[] YAxes { get; set; } =
{
new Axis // the "units" and "tens" series will be scaled on this axis
{
Name = "Tens",
NameTextSize = 14,
NamePaint = new SolidColorPaint(s_blue),
NamePadding = new LiveChartsCore.Drawing.Padding(0, 20),
Padding = new LiveChartsCore.Drawing.Padding(0, 0, 20, 0),
TextSize = 12,
LabelsPaint = new SolidColorPaint(s_blue),
TicksPaint = new SolidColorPaint(s_blue),
SubticksPaint = new SolidColorPaint(s_blue),
DrawTicksPath = true
},
new Axis // the "hundreds" series will be scaled on this axis
{
Name = "Hundreds",
NameTextSize = 14,
NamePaint = new SolidColorPaint(s_red),
NamePadding = new LiveChartsCore.Drawing.Padding(0, 20),
Padding = new LiveChartsCore.Drawing.Padding(20, 0, 0, 0),
TextSize = 12,
LabelsPaint = new SolidColorPaint(s_red),
TicksPaint = new SolidColorPaint(s_red),
SubticksPaint = new SolidColorPaint(s_red),
DrawTicksPath = true,
ShowSeparatorLines = false,
Position = LiveChartsCore.Measure.AxisPosition.End
},
new Axis // the "thousands" series will be scaled on this axis
{
Name = "Thousands",
NameTextSize = 14,
NamePadding = new LiveChartsCore.Drawing.Padding(0, 20),
Padding = new LiveChartsCore.Drawing.Padding(20, 0, 0, 0),
NamePaint = new SolidColorPaint(s_yellow),
TextSize = 12,
LabelsPaint = new SolidColorPaint(s_yellow),
TicksPaint = new SolidColorPaint(s_yellow),
SubticksPaint = new SolidColorPaint(s_yellow),
DrawTicksPath = true,
ShowSeparatorLines = false,
Position = LiveChartsCore.Measure.AxisPosition.End
}
};
public SolidColorPaint LegendTextPaint { get; set; } =
new SolidColorPaint
{
Color = new SKColor(50, 50, 50),
SKTypeface = SKTypeface.FromFamilyName("Courier New")
};
public SolidColorPaint LedgendBackgroundPaint { get; set; } =
new SolidColorPaint(new SKColor(240, 240, 240));
}
XAML
<UserControl x:Class="UnoWinUISample.Axes.Multiple.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.Multiple"
mc:Ignorable="d">
<UserControl.DataContext>
<vms:ViewModel/>
</UserControl.DataContext>
<lvc:CartesianChart
Series="{Binding Series}"
YAxes="{Binding YAxes}"
LegendPosition="Left"
LegendTextPaint="{Binding LegendTextPaint}"
LegendBackgroundPaint="{Binding LedgendBackgroundPaint}"
LegendTextSize="16">
</lvc:CartesianChart>
</UserControl>
