Our WPF Impulse (Stem) Chart generates an Impulse-response style chart with optional point-marker in code. The FastImpulseRenderableSeries can be used to render an XyDataSeries, XyyDataSeries (uses Y1 only) or OhlcDataSeries (renders close).

Tip! You can add optional data-point markers to a impulse series using the PointMarker API. This is very performant and uses the same bitmap rendering as our Scatter-Charts.

Documentation Links

– FastImpulseRenderableSeries Type
– XyDataSeries Type
– What is a RenderableSeries?
– DataSeries Types in SciChart
– Common RenderableSeries Properties

// ImpulseChartExampleView.xaml

<UserControl x:Class="SciChart.Examples.Examples.CreateSimpleChart.ImpulseChartExampleView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
             xmlns:ext="http://schemas.abtsoftware.co.uk/scichart/exampleExternals"
             Loaded="ImpulseChartExampleView_OnLoaded"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"             
             d:DesignHeight="400"
             d:DesignWidth="600"
             mc:Ignorable="d">

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>

        <!-- The SciChartInteractionToolbar adds zoom, pan, zoom extents and rotate functionality -->
        <!-- to the chart and is included for example purposes. -->
        <!-- If you wish to know how to zoom and pan a chart then do a search for Zoom Pan in the Examples suite! -->
        <ext:SciChartInteractionToolbar TargetSurface="{Binding Source={x:Reference Name=sciChart}}" />

        <!--  Declare the chart surface  -->
        <s:SciChartSurface x:Name="sciChart"
                           Grid.Column="1"
                           Padding="0"
                           BorderThickness="0">

            <!--  Declare renderable series  -->
            <s:SciChartSurface.RenderableSeries>

                <s:FastImpulseRenderableSeries x:Name="impulseRenderSeries" Stroke="#0066FF">
                    <!--  Declare an optional point marker at the tip of each line  -->
                    <s:FastImpulseRenderableSeries.PointMarker>
                        <s:EllipsePointMarker Width="5"
                                              Height="5"
                                              Fill="#0066FF" />
                    </s:FastImpulseRenderableSeries.PointMarker>

                    <s:FastImpulseRenderableSeries.SeriesAnimation>
                        <s:ScaleAnimation AnimationDelay="0:0:1" Duration="0:0:1" ZeroLine="0"/>
                    </s:FastImpulseRenderableSeries.SeriesAnimation>

                </s:FastImpulseRenderableSeries>

            </s:SciChartSurface.RenderableSeries>

            <!--  Declare the XAxis  -->
            <s:SciChartSurface.XAxis>
                <s:NumericAxis DrawMajorBands="True" />
            </s:SciChartSurface.XAxis>

            <!--  Declare the YAxis. Optional bands give a cool look and feel for minimal performance impact  -->
            <s:SciChartSurface.YAxis>
                <s:NumericAxis DrawMajorBands="True" GrowBy="0.1, 0.1" />
            </s:SciChartSurface.YAxis>

        </s:SciChartSurface>

    </Grid>

</UserControl>

// ImpulseChartExampleView.xaml.cs

// *************************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2022. All rights reserved.
//  
// Web: http://www.scichart.com
//   Support: support@scichart.com
//   Sales:   sales@scichart.com
// 
// ImpulseChartExampleView.xaml.cs is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use. 
// 
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied. 
// *************************************************************************************
using System.Windows;
using System.Windows.Controls;
using SciChart.Charting.Model.DataSeries;
using SciChart.Examples.ExternalDependencies.Data;

namespace SciChart.Examples.Examples.CreateSimpleChart
{
    public partial class ImpulseChartExampleView : UserControl
    {
        public ImpulseChartExampleView()
        {
            InitializeComponent();
        }

        private void ImpulseChartExampleView_OnLoaded(object sender, RoutedEventArgs e)
        {
            var dataSeries = new UniformXyDataSeries<double>(0d, 0.1);

            // Substitute for your own data
            dataSeries.Append(DataManager.Instance.GetDampedSinewaveYData(1.0, 0.05, 100));

            impulseRenderSeries.DataSeries = dataSeries;

            // Explicit call to ZoomExtents()
            sciChart.ZoomExtents();
        }
    }
}

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