Overview

The .NET MAUI spline area chart is designed for visualizing quantitative data. It is an area chart type that plots a fitted curve through each data point in a series. It is used to represent time-dependent data and show trends in data at equal intervals.

.NET MAUI Spline Area Chart documentation

.NET MAUI spline area chart.

Key features

.NET MAUI vertical spline area chart.

Vertical spline area chart

Rotate the spline area chart to plot data vertically and view it from a different perspective.

.NET MAUI spline area chart with customized color and thickness.

UI styling

Customize the color and thickness of the spline area chart using built-in APIs to make it visually unique.

.NET MAUI spline area chart with multiple axes.

Multiple axes

Use multiple axes to plot different data sets that widely vary from one another.

Code example

xaml
c#
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui" 
        xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
        x:Class="ChartExample.MainPage"
        xmlns:local="using:ChartExample"
        xmlns:chart="clr-namespace:Syncfusion.Maui.Charts;assembly=Syncfusion.Maui.Charts">
    
    <Grid>
        <chart:SfCartesianChart HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
            <!--Setting BindingContext-->
            <chart:SfCartesianChart.BindingContext>
                <local:ViewModel/>
            </chart:SfCartesianChart.BindingContext>

            <!--Initialize the horizontal axis for the .NET MAUI Cartesian Chart.-->
            <chart:SfCartesianChart.XAxes>
                <chart:CategoryAxis/>
            </chart:SfCartesianChart.XAxes>

            <!--Initialize the vertical axis for the .NET MAUI Cartesian Chart.-->
            <chart:SfCartesianChart.YAxes>
                <chart:NumericalAxis/>
            </chart:SfCartesianChart.YAxes>
           
            <!--Adding Spline Area Series to the .NET MAUI Cartesian Chart.-->
            <chart:SplineAreaSeries 
                        ItemsSource="{Binding Data}" 
                        XBindingPath="Month"
                        YBindingPath="Target">
            </chart:SplineAreaSeries> 
        </chart:SfCartesianChart>
    </Grid>
</ContentPage>
public class Model
{
    public string Month { get; set; }

    public double Target { get; set; }

    public Model(string xValue, double yValue)
    {
        Month = xValue;
        Target = yValue;
    }
}

public class ViewModel
{
    public ObservableCollection<Model> Data { get; set; }

    public ViewModel()
    {
        Data = new ObservableCollection<Model>()
        {
            new Model("Jan", 50),
            new Model("Feb", 70),
            new Model("Mar", 65),
            new Model("Apr", 57),
            new Model("May", 48), 
        };
    }
}