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1 vote
213 views

We’re allowing our users to place down annotations on the chart with an annotation creation modifier. One of these annotations is a Text annotation.

We then allow users to save these annotations into our own proprietary file format and load them back in with the chart data. To do this we iterate through the AnnotationCollection of the chart and parse the SciChart annotations to data we save to our files.

To save the content of the text for the TextAnnotation we read the TextAnnotation.Text property. However, we’ve noticed that this property is not set until the annotation has lost focus (we click away from the annotation somewhere else on the chart). If we save the annotation before we click away from it, we do not get the current text from the TextAnnotation.Text property.

The process to reproduce this is:
1. Place down a TextAnnotation.
2. Edit the TextAnnotation content. Do not click away from the text so to annotation remains in “Editing” mode
3. Save the data.
4. As we’re saving we read the TextAnnotation.Text property to save to our file. However, the TextAnnotation.Text property returns a blank string because its still being edited.

Is there a way from within our code that we can finish the editing of the text annotation, so that when we get the TextAnnotation.Text property it is the current text the user typed in? Or is there a way to get the current text within the TextAnnotation without finishing the editing or changing the focus?

0 votes
946 views

Codesandbox link: https://codesandbox.io/p/sandbox/vertically-stacked-axes-forked-pd3h7g?file=%2Fsrc%2FApp.tsx%3A133%2C25

I put the first box annotation to be from -5 to 6 and the x-axis range is from 0 to 10, so that mean some portion of the first box annotation is out of the chart. And there is a click event on the box annotation and console log whenever it is clicked on, and when I click outside of the chart box/square and align it to the box annotation, it is registering the click.

  • Nung Khual asked 3 months ago
  • last active 2 months ago
0 votes
987 views

Hello,

I am trying to select a single X value on my chart and get the data values from the X value that I selected. I am still pretty new to SciChart but I was looking around and saw that there is a DataPointSelectionModifier. My goal is to create a VerticalLineAnnotation for the user to use and once that annotation is created, to pull the data values from that X value. Could this be done? Any advice or help is greatly appreciated!

Thanks,

Preston

1 vote
2k views

hello.
I added an OverView and scrollbar below the main chart, referring to the CustomOverviewView example.
Graph and scroll functions work without problems.
I want to show the main chart annotations in the OverView.
How can I solve my problem?
have a good day!

1 vote
2k views

Hello, everyone.

I want to add annotations for analyzing 3d charts.
In order to do that, it is necessary to be able to make several marks on the X-axis, Y-axis, and Z-axis, and I would like to know the best practices.

please check the attached picture. It is similar with cursor but it’s fixed.
I found Custom Geometry documents.
https://www.scichart.com/documentation/win/current/webframe.html#Adding%20Cubes%20and%20Custom%20Geometry%20to%20the%20Chart.html
but I am not sure this is for the best.

Thanks,
Kim, JinSeok.

1 vote
6k views

We are using the VerticalLineAnnotation and want to change it’s location (X1 property) in the viewmodel.

Annotations are bound like this:

<s:SciChartSurface
           ...
           Annotations="{s:AnnotationsBinding Annotations}"

to the property:

public ObservableCollection<IAnnotationViewModel> Annotations { get; private set; }

The collection contains this association:

this.nowAnnotation = new VerticalLineAnnotationViewModelEx()
        {
            X1 = TimeSpan.FromSeconds(0),
            StyleKey = "NowAnnotationStyle"
        };

To change the location we change the value of X1:

nowAnnotation.X1 = value;

Calling that didn’t have a direct effect on the UI unless the user does any action which redraws the chart.

We created a style which sets an attached property to pass the VerticalLineAnnotation to the view model, this works fine.

<Style TargetType="s:VerticalLineAnnotation" x:Key="NowAnnotationStyle">
                    <Setter Property="viewModels:VerticalLineAnnotationViewModelEx.PassIAnnotation" Value="True" />
                </Style>

And we added a Refresh method to VerticalLineAnnotationViewModelEx and call it after setting X1:

nowAnnotation.X1 = value;
nowAnnotation.Refresh();

The first implementation of the Refresh method we did was:

public void Refresh()
    {
        this.Annotation.Refresh();
    }

From the documentation this should redraw the annotation without redrawing the whole chart, but it had no effect.
https://www.scichart.com/documentation/win/current/webframe.html#SciChart.Charting~SciChart.Charting.Visuals.Annotations.AnnotationBase~Refresh.html

It only started working after changing to this:

public void Refresh()
    {
        this.Annotation.ParentSurface.InvalidateElement();
    }

Is there a better way to do it, shouldn’t the first implementation work?

The complete code of VerticalLineAnnotationViewModelEx

public class VerticalLineAnnotationViewModelEx : VerticalLineAnnotationViewModel
{
    public static readonly DependencyProperty PassIAnnotationProperty = DependencyProperty.RegisterAttached(
        "PassIAnnotation", typeof(bool), typeof(VerticalLineAnnotationViewModelEx),
        new PropertyMetadata(default(bool), OnPassIAnnotationChanged));

    public IAnnotation Annotation { get; private set; }

    private static void OnPassIAnnotationChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var verticalLineAnnotation = (VerticalLineAnnotation)d;
        ((VerticalLineAnnotationViewModelEx)verticalLineAnnotation.DataContext).Annotation = (IAnnotation)d;
    }

    public static void SetPassIAnnotation(DependencyObject element, bool value)
    {
        element.SetValue(PassIAnnotationProperty, value);
    }

    public static bool GetPassIAnnotation(DependencyObject element)
    {
        return (bool)element.GetValue(PassIAnnotationProperty);
    }

    public void Refresh()
    {
        //this.Annotation?.Refresh();
        this.Annotation?.ParentSurface.InvalidateElement();
    }
}
1 vote
2k views

Hello,

When annotations and the rollover modifiers are displayed on the very left side of a chart they align with the center of the candlesticks on the chart. However, as they get displayed toward the right side of the chart they get more and more offset to the right side of the candlestick.

Can anyone point me in the right direction to figure out how to fix this issue seemingly with my xAxis?

See attached screenshots,

  • Leland asked 10 months ago
  • last active 10 months ago
0 votes
0 answers
6k views

Hello! I want to create an AxisMarkerAnnotation but the padding doesn’t match the position of the text on the axis – I would like to align it and what is the way to do it? couldn’t find the right settings

0 votes
6k views

Hello! I am try to create chart with axis on top in my react native app, chart is create succesfuly, but when I start add annotation – it shift to top by axis height – whats may be wrong?

`

// create
surface = new CSciChartSurface(context);
surface.setRenderSurface(new RenderSurface(context));

// Initialize the SciChartBuilder
SciChartBuilder.init(context);

// Obtain the SciChartBuilder instance
sciChartBuilder = SciChartBuilder.instance();

 xAxis = sciChartBuilder
      .newCategoryDateAxis()
      .withTextFormatting(DateChartFormatter.defaultDateFormat)
      .withGrowBy(0.0d, 0.04d)
      .withDrawMajorGridLines(true)
      .withDrawMinorGridLines(false)
      .withDrawMajorBands(false)
      .withDrawMajorTicks(false)
      .withAxisAlignment(AxisAlignment.Top)
      .build();
// same yaxis and any

VerticalLineAnnotation verticalLine = sciChartBuilder.newVerticalLineAnnotation()
        .withPosition(10, 16)
        .withStroke(2, ColorUtil.Orange)
        .withIsEditable(true)
        .build();

Collections.addAll(surface.getYAxes(), yAxis);
Collections.addAll(surface.getXAxes(), xAxis);
Collections.addAll(surface.getRenderableSeries(), lineRenderableSeries);
Collections.addAll(surface.getAnnotations(), verticalLine);

// add to view
this.addView(surface);

`

1 vote
4k views

How to update the text Annotation in JavaScript. I can add the new Text annotation but I can’t update the old text Annotation. whether we have any option in sci chart for JavaScript.

1 vote
4k views

I have a real time updated chart and users can add annotation to the chart. The position of the annotation will be updated with the chart data. I would like to stop updating the annotation position while user dragging the annotation. So I added a flag (e.g. isDragging) to the annotation dragStarted and dragEnded events. The isDragging flag will be set to true in dragStarted and then set to false in dragEnded. I will check this flag before updating the annotation position.

Here’s the problem, the annotation dragStarted event will be triggered when users do panning in the chart. But the dragEnded will not be triggered in this case. It breaks my plan to stop updating the annotation position as the isDragging will be incorrect. Is it a bug that the annotation dragStarted event (but not the dragEnded event) triggered when panning?

  • Quyen Sy asked 1 year ago
  • last active 1 year ago
1 vote
5k views

Hello,

Is there away to extend a LineAnnotationViewModel to the right? I see there is a ExtendedLineAnnotaion
But that only seems to be available in the DrawingTools API.

Thank you

  • Leland asked 1 year ago
  • last active 1 year ago
1 vote
7k views

I’m having issues with displaying my vertical annotations on my chart. Below is the code for creating the annotation and adding it to the chart.

var annotationLine = new VerticalLineAnnotation();
annotationLine.XAxisId = XAxisID;
annotationLine.YAxisId = YAxisID;
annotationLine.Stroke = new SolidColorBrush(Colors.Blue);
annotationLine.StrokeThickness = 2;
annotationLine.IsHidden = false;
annotationLine.AnnotationCanvas = AnnotationCanvas.BelowChart;
annotationLine.Y1 = 0;
annotationLine.Y2 = ControlHeight;
annotationLine.X1 = xValues[i];
Surface.Annotations.Add(annotationLine);

I have verified that the XAxisId and the YAxisId are correct and match the id of the only axes that I have on the chart
I have verified that the xValues[i] is a valid value on the chart and within the bounds of the viewport

The tricky part here is that I am reading live streaming EEG data from a device and inserting manual triggers into the data. This works fine and the annotations appear in the chart as they are within the bounds of the chart.
I then record that data to a file (currently csv but will be doing EDF as soon as I get this figured out) where the annotation data is present (verified)
It’s when I try to read the file into my application that I can’t get the annotations to appear on the SciChart. I’m using the code above for both the live streaming data (working) and the file reading (not working) so I’m really baffled by this and could use any insight anyone has.

Thank you

1 vote
5k views

Previously I used AnnotationCreationModifier and my custom annotations were added by one left button mouse click on the chart surface (the annotation was added to the collection and the event handler “AnnotationCreated” fired). Now I’m trying to switch to using the mvvm pattern and I have problems adding my custom annotations using AnnotationCreationModifierMVVM.

Now it works like this:
1) I click (mouse left button) on the chart surface to add an annotation and it is added to the collection and displayed.
2) I click on the chart surface again, and only after that the event handler “AnnotationCreated” is called.

If I carry out some external manipulations with the added annotation between first and second click (for example, moving to the given coordinates by the button click), annotation moved, but when I hover the mouse over the chart surface, it returns to it’s original position. And this behavior will be until I click again on the chart surface so that the event handler “AnnotationCreated” is called.

The built-in annotations work fine though (for examle, VerticalLineAnnotationViewModel or HorizontalLineAnnotationViewModel are successfully added to the collection and call the event handler “AnnotationCreated” by one click on chart surface).

Is it possible to somehow fix this behavior of the custom annotation so that it is added to the collection and triggers an event “AnnotationCreated” for one click on the chart surface, as was the case with AnnotationCreationModifier? I am attaching an example code:

MainWindow.xaml

<Window x:Class="WpfAppMvvm.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
    xmlns:ext="http://schemas.abtsoftware.co.uk/scichart/exampleExternals"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800">
<Grid>
    <s:SciChartSurface Annotations="{s:AnnotationsBinding Annotations}">
        <s:SciChartSurface.XAxis>
            <s:NumericAxis AxisTitle="X"/>
        </s:SciChartSurface.XAxis>
        <s:SciChartSurface.YAxis>
            <s:NumericAxis AxisAlignment="Left" AxisTitle="Y"/>
        </s:SciChartSurface.YAxis>
        <s:SciChartSurface.ChartModifier>
            <s:ModifierGroup>
                <s:AnnotationCreationModifierMVVM IsEnabled="True" AnnotationViewModelsCollection="{Binding Annotations}" AnnotationViewModelType="{Binding AnnotationType}">
                    <i:Interaction.Behaviors>
                        <ext:EventToCommandBehavior Command="{Binding AnnotationCreatedCommand}" Event="AnnotationCreated" PassArguments="True"/>
                    </i:Interaction.Behaviors>
                </s:AnnotationCreationModifierMVVM>
            </s:ModifierGroup>
        </s:SciChartSurface.ChartModifier>
    </s:SciChartSurface>
</Grid>

MainWindow.xaml.cs

using System.Windows;
namespace WpfAppMvvm
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DataContext = new MainWindowViewModel();
        }
    }
}

MainWindowViewModel.cs

using SciChart.Charting.ChartModifiers;
using SciChart.Charting.Common.Helpers;
using SciChart.Charting.Model.ChartSeries;
using SciChart.Examples.ExternalDependencies.Common;
using System;
using System.Collections.ObjectModel;
using System.Windows;
namespace WpfAppMvvm
{
    internal class MainWindowViewModel:BaseViewModel
    {
        public ObservableCollection<IAnnotationViewModel> Annotations { get; private set; }
        public Type AnnotationType { get; private set; }
        public ActionCommand<AnnotationCreationMVVMArgs> AnnotationCreatedCommand { get; private set; }

        public MainWindowViewModel()
        {
            Annotations = new ObservableCollection<IAnnotationViewModel>();
            AnnotationType = typeof(MyCustomAnnotationViewModel);
            AnnotationCreatedCommand = new ActionCommand<AnnotationCreationMVVMArgs>(ExecCmd, e => true);
        }
        private void ExecCmd(AnnotationCreationMVVMArgs e)
        {
            MessageBox.Show("OnAnnotationCreated executed");
        }
    }
}

MyCustomAnnotation.xaml

<s:CustomAnnotationForMvvm x:Class="WpfAppMvvm.MyCustomAnnotation"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         mc:Ignorable="d" 
         xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
         d:DesignHeight="450" d:DesignWidth="800">
<Grid>
    <Ellipse
        Width="20"
        Height="20"
        Fill="Transparent"
        Stroke="Red"
        StrokeThickness="3"
    />
</Grid>

MyCustomAnnotation.xaml.cs

using SciChart.Charting.Visuals.Annotations;

namespace WpfAppMvvm
{
    public partial class MyCustomAnnotation : CustomAnnotationForMvvm
    {
        public MyCustomAnnotation()
        {
            InitializeComponent();
        }
    }
}

MyCustomAnnotationViewModel.cs

using SciChart.Charting.Model.ChartSeries;
using System;

namespace WpfAppMvvm
{
    public class MyCustomAnnotationViewModel:CustomAnnotationViewModel
    {
    public override Type ViewType => typeof(MyCustomAnnotation);
    }
}
1 vote
0 answers
12k views

Hi,

I have annotation, users can it drag and drop. But for it first need select this annotation and after drag it(with re-touching).
How to immediately drag annotation(without re-touching)?

Thanks in advance.

Regards,
Batyr

1 vote
6k views

Hi, Support team.

I’m using MVVM pattern and trying to implement multi-chart which can insert Box Annotations at the same time into each chart .
So I’m testing in SciChart Example [“DigitalAnalyzerPerformanceDemo”] to know how to implement this.

But what i only got is just looping through and create annotation for each ChannelViewModels.

In the Demo, the VisibleRange ‘XRange’ is shared to all the ChannelViewModels by binding TwoWay-mode in ParentViewModel without looping for each ChildViewModels.
Like this, I wonder is there ways to apply BoxAnnotation all the ChannelViewModel at the same time by binding in ParentViewModel.

    <!-- BottomAxis -->
        <s:SciChartSurface Grid.Column="1">
            <s:SciChartSurface.XAxis>
                <s:NumericAxis Height="30"
                               AxisAlignment="Bottom"
                               VisibleRange="{Binding XRange, Mode=TwoWay}"                 
                               LabelProvider="{StaticResource TimeLabelProvider}"
                               MajorTickLineStyle="{StaticResource TimeAxisMajorTickLineStyle}"
                               MinorTickLineStyle="{StaticResource TimeAxisMinorTickLineStyle}"/>
            </s:SciChartSurface.XAxis>
            <s:SciChartSurface.YAxis>
                <s:NumericAxis Visibility="Collapsed"/>
            </s:SciChartSurface.YAxis>
        </s:SciChartSurface>
    </Grid>

    <!--  Create an X Axis with GrowBy  -->
     <s:SciChartSurface.XAxis>
           <s:NumericAxis Style="{StaticResource HiddenAxisStyle}"
                    VisibleRangeLimitMode="Min"
                    VisibleRangeLimit="0,0"
                    VisibleRange="{Binding DataContext.XRange, Mode=TwoWay, RelativeSource={RelativeSource AncestorType=ItemsControl, AncestorLevel=2}}"/>
     </s:SciChartSurface.XAxis>

I tried to bind annotation in ParentViewModel like XRange Binding method, But it doesn’t work.


This is View.xaml.

<Grid Grid.IsSharedSizeScope="True" IsEnabled="{Binding IsLoading, Converter={StaticResource InvertBooleanConverter}}">


    <!-- BottomAxis -->
        <s:SciChartSurface Grid.Column="1">
            <s:SciChartSurface.XAxis>
                <s:NumericAxis Height="30"
                               AxisAlignment="Bottom"
                               VisibleRange="{Binding XRange, Mode=TwoWay}"                 
                               LabelProvider="{StaticResource TimeLabelProvider}"
                               MajorTickLineStyle="{StaticResource TimeAxisMajorTickLineStyle}"
                               MinorTickLineStyle="{StaticResource TimeAxisMinorTickLineStyle}"/>
            </s:SciChartSurface.XAxis>
            <s:SciChartSurface.YAxis>
                <s:NumericAxis Visibility="Collapsed"/>
            </s:SciChartSurface.YAxis>
        </s:SciChartSurface>
    </Grid>

    <!-- Channels -->
        <ScrollViewer Background="#1C1C1E"
                      VerticalScrollBarVisibility="Auto"
                      HorizontalScrollBarVisibility="Disabled">

            <b:Interaction.Behaviors>
                <common:DigitalAnalyzerScrollBehavior ChannelHeightDelta="10" ChangeChannelHeightCommand="{Binding ChangeChannelHeightCommand}"/>
            </b:Interaction.Behaviors>

            <ItemsControl x:Name="chartItemsControl" ItemsSource="{Binding ChannelViewModels}">

                <b:Interaction.Behaviors>
                    <common:FocusedChannelScrollBehavior ScrollToFocusedChannel="False"/>
                </b:Interaction.Behaviors>

                <ItemsControl.ItemTemplate>
                    <DataTemplate DataType="{x:Type local:ChannelViewModel}">
                        <Grid Background="#2D2C32" Height="{Binding ChannelHeight, Mode=OneWay}" Focusable="False" UseLayoutRounding="False" >
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition SharedSizeGroup="ChannelNames" />
                                <ColumnDefinition />
                            </Grid.ColumnDefinitions>

                            <Border BorderThickness="0,0,0,1" BorderBrush="#1C1C1E">
                                <DockPanel>
                                    <Border DockPanel.Dock="Left"     
                                            Background="{Binding ChannelColor, Mode=OneWay}" 
                                            Width="5"/>

                                    <TextBlock DockPanel.Dock="Left"
                                               Margin="10,5"
                                               VerticalAlignment="Center"
                                               Foreground="White"
                                               Text="{Binding ChannelName}"/>
                                </DockPanel>
                            </Border>

                            <s:SciChartSurface x:Name="channelSurface" Grid.Column="1"
                                               RenderableSeries="{Binding RenderableSeries}"
                                               Annotations="{s:AnnotationsBinding  DataContext.Annotations, Mode=TwoWay, RelativeSource={RelativeSource AncestorType=ItemsControl, AncestorLevel=2} }">

                                <!--  Create an X Axis with GrowBy  -->
                                <s:SciChartSurface.XAxis>
                                    <s:NumericAxis Style="{StaticResource HiddenAxisStyle}"
                                                   VisibleRangeLimitMode="Min"
                                                   VisibleRangeLimit="0,0"
                                                   VisibleRange="{Binding DataContext.XRange, Mode=TwoWay, RelativeSource={RelativeSource AncestorType=ItemsControl, AncestorLevel=2}}"/>
                                </s:SciChartSurface.XAxis>

                                <!--  Create a Y Axis with GrowBy. Optional bands give a cool look and feel for minimal performance impact  -->
                                <s:SciChartSurface.YAxis>
                                    <s:NumericAxis Style="{StaticResource HiddenAxisStyle}"
                                                   VisibleRange="{Binding YRange, Mode=OneWay}"/>
                                </s:SciChartSurface.YAxis>

                                <s:SciChartSurface.ChartModifier>
                                    <s:ModifierGroup s:MouseManager.MouseEventGroup="ChannelModifierGroup">
                                        <s:RubberBandXyZoomModifier IsAnimated="False" IsXAxisOnly="True" ZoomExtentsY="False" ReceiveHandledEvents="True" IsEnabled="{Binding IsChecked, Mode=OneWay, ElementName=IsZoomEnabled}"/>
                                        <s:ZoomPanModifier ZoomExtentsY="False" XyDirection="XDirection" IsEnabled="{Binding IsChecked, Mode=OneWay, ElementName=IsPanEnabled}"/>
                                        <s:ZoomExtentsModifier XyDirection="XDirection" IsAnimated="False" />
                                        <s:MouseWheelZoomModifier XyDirection="XDirection" />
                                    </s:ModifierGroup>
                                </s:SciChartSurface.ChartModifier>
                            </s:SciChartSurface>

                            <Border Grid.Column="1"
                                    BorderThickness="0,0,0,1"
                                    BorderBrush="#2D2C32"
                                    VerticalAlignment="Bottom"/>
                        </Grid>
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>
        </ScrollViewer>
    </Border>


</Grid>

This is ViewModel.cs

public class DigitalAnalyzerExampleViewModel : BaseViewModel
{
    private bool _isLoading;
    private DoubleRange _xRange;

    public DigitalAnalyzerExampleViewModel()
    {
        ChannelViewModels = new ObservableCollection<ChannelViewModel>();
        Annotations = new ObservableCollection<IAnnotationViewModel>();
        Annotations.Add(new BoxAnnotationViewModel() { X1 = 0, X2 = 1000, Y1 = 0, Y2 = 1 }); //I want to implement sharing annotation like this.

        SelectedChannelType = "Digital";
        SelectedChannelCount = 32;
        SelectedPointCount = 1000000;
        SelectedResamplingPrecision =ResamplingPrecision.Default;
        SelectedStrokeThickness = 1;

        ChangeChannelHeightCommand = new ActionCommand<object>((d) =>
        {
            var delta = (double)d;
            foreach (var channelViewModel in ChannelViewModels)
            {
                channelViewModel.SetChannelHeightDelta(delta);
            }
        });

        AddChannelCommand = new ActionCommand(async () =>
        {
            IsLoading = true;

            var isDigital = SelectedChannelType == "Digital";
            await AddChannels(isDigital ? 1 : 0, isDigital ? 0 : 1);

            IsLoading = false;
        });

        LoadChannelsCommand = new ActionCommand(async () =>
        {
            IsLoading = true;

            // Clear ViewModels
            foreach (var channelVm in ChannelViewModels)
            {
                channelVm.Clear();
            }
            ChannelViewModels.Clear();
            XRange = null;

            // Create a bunch of Digital channels
            await AddChannels(SelectedChannelCount, 0);

            XRange = new DoubleRange(0, SelectedPointCount);
            IsLoading = false;
        });

        LoadChannelsCommand.Execute(null);
    }


    public ObservableCollection<ChannelViewModel> ChannelViewModels { get; private set; }
    public ObservableCollection<IAnnotationViewModel> Annotations { get; private set; }

    public string SelectedChannelType { get; set; }


    public ResamplingPrecision SelectedResamplingPrecision { get; set; }

    public int SelectedChannelCount { get; set; }

    public ActionCommand<object> ChangeChannelHeightCommand { get; }

    public ActionCommand AddChannelCommand { get; }

    public ActionCommand LoadChannelsCommand { get; }

    public long TotalPoints => ChannelViewModels.Sum(c => (long)c.DataCount);

    public bool IsLoading
    {
        get => _isLoading;
        set
        {
            _isLoading = value;
            OnPropertyChanged(nameof(IsLoading));
        }
    }

    public bool IsEmpty => ChannelViewModels.Count <= 0;

    public DoubleRange XRange
    {
        get => _xRange;
        set
        {
            _xRange = value;
            OnPropertyChanged(nameof(XRange));
        }
    }
}

+Attached image below is what i want to implement.
++I also attached tried code in .zip .

1 vote
5k views

Is there any way to provide annotation tooltip onmouseover? Perhaps I can subscribe on surface mouse events and manage visibility and positions on “tooltip” annotations by myself? If so, could you please provide reference to surface mouse events API.

0 votes
3k views

Hi,

Can you please tell me how to show an annotation(extends at BoxAnnotation(x1, y1, 2, y2)) that starts at a certain point(x1, y1) and ends at the end of the chart. That is, the starting point (x1) is known, and the end point (x2) at the very end of the surface (graph)?
Thanks in advance.

Regards,
Batyr

0 votes
5k views

Hi,

I’d like to learn how to cancel creating annotation in the OnAnnotationCreatedListener(). Thanks.

annotationCreationModifier.setAnnotationCreationListener(new OnAnnotationCreatedListener() {
        @Override
        public void onAnnotationCreated(IAnnotation iAnnotation) {
            if (outofbound) {
                 // remove current annotation
            }
         }
  • Gang Xu asked 3 years ago
  • last active 3 years ago
0 votes
0 answers
9k views

Hi
Sometimes when I call annotation.setIsHidden in a surface with RenderSurfaceGl, not works.
what should I do?

0 votes
5k views

Hello,
I am trying to make an annotation draggable. I tried setting the isEditable property to true, but nothing happened. I can’t find the right documentation for draggable annotations . My code for creating the Annotation it’s below:

sciChartSurface.annotations.add(new LineAnnotation({
    stroke: "#279B27", strokeThickness: 3,
    xCoordinateMode: ECoordinateMode.DataValue,
    x1: 0,
    x2: 0,
    yCoordinateMode: ECoordinateMode.Relative,
    y1: 0,
    y2: 1,
    isEditable: true,
}));
0 votes
6k views

Hi,

I’d like to enable AnnotationCreationListener with a toggle button pressed down, and disable it with the button released. It’s different from the Android sample code in Create Annotation Dynamically. I have a few questions when I’m trying to code. I’m not sure if my approach is on the right track. Please advise, thanks.

// insert button listener
    insertAnnotationButton = findViewById(R.id.annotationInsertButton);
    insertAnnotationButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            // TODO: add chartmodifier/annotationCreationModifier when button pressed down
            if (insertAnnotationButton.isChecked()) {
                annotationCreationModifier.setAnnotationType(???); // how to set type to vertical line annotation?
                DefaultAnnotationFactory annotationFactory = new DefaultAnnotationFactory();
                annotationFactory.setFactoryForAnnotationType(DefaultAnnotationFactory.VERTICAL_LINE_ANNOTATION, new IAnnotationFactory() {
                    @NonNull
                    @Override
                    public IAnnotation createAnnotation(@NonNull ISciChartSurface parentSurface, int annotationType) {
                        return sciChartBuilder.newVerticalLineAnnotation().withIsEditable(true).withStroke(1, White).withVerticalGravity(Gravity.FILL_VERTICAL).build();
                    }
                });
                annotationCreationModifier.setAnnotationFactory(annotationFactory);
                annotationCreationModifier.setAnnotationCreationListener(new OnAnnotationCreatedListener() {
                    @Override
                    public void onAnnotationCreated(IAnnotation iAnnotation) {
                        // how to get X coordinate of the annotation and update my annotation variable

                    }
                });
                ecmSurface.getChartModifiers().add(sciChartBuilder.newModifierGroup().withModifier(annotationCreationModifier)..build());
            } else {
                // how to remove annotationCreationModifier from ChartModifiers?
                ecmSurface.getChartModifiers().remove(???);
            }
        }
    });
  • Gang Xu asked 3 years ago
  • last active 3 years ago
0 votes
9k views

Hi,

I’ve been wondering. In SciChart’s current WPF version, is there any way to configure the default ViewportManager (or create a new customized one in a simple way) such that whenever I call its ZoomExtents method, the X and Y axes’ ranges will include any custom annotations I’ve added to the chart’s annotations collection?

My custom annotations are basically Images, with fixed Width and Height, and I set their X1 and Y1 properties to hold certain data points I have on the chart. The issue is, I need axes’ ranges to include the Image in it’s entirety, meaning I would have to somehow convert their Widths and Heights to “data point values”, since the new visible range should be in terms of data values, if I’m not mistaken.

Any good example to how this could be done?

  • Ilan Rozen asked 4 years ago
  • last active 4 years ago
0 votes
7k views

Hello,

I want to implement a custom deltaX cursor in my software. It consists in two vertical lines that can be moved be the user and the idea to get the delta x (DateTime) between the two lines.
I’ve started to implement it by using two custom VerticalLineAnnotation added to a VerticalSliceManager. As my chart is a real time chart, I don’t want my cursors postions changed exepct on user interaction, that’s why I set to Relative the CoordinateMode property of my two Annotations.
The display and the interaction works fine, but when I try to retrieve the actual position of one cursor to compute the delta I have some trouble to convert the relative position to a DateTime value.
I have override the OnDragDelta() method, the relative value of X1 is correct but when I try to convert it into a DateTime by using FromRelativeCoordinate, I still have Date in 1899. I also try to interpret this as OA Date but I still have wrong date.

Do you have an idea ?
Thanks

 public override void OnDragDelta()
    {
        if (_sciChartSurface.XAxis != null)
        {
            double dataValue = (double)this.FromRelativeCoordinate((double)this.X1, _sciChartSurface.XAxis);
            DateTime classic = new DateTime((long)dataValue);
            DateTime fromOa = DateTime.FromOADate(dataValue);
            Debug.WriteLine("CLASSIC "+ classic);
            Debug.WriteLine("OA "+ fromOa);
        }
    }
0 votes
6k views

Hello,

I have two questions about how to get axes or annotations by ID.

First, I trying to update the VisibleRange for X axis in the internalUpdate function in the UniformHeatmapSeriesTooltip. When I use getAxisById, my ECG data series is gone from the chart. But it works if I use getDefault() instead (axis Id not defined). So I kind of confused.

private class CustomHeatmapTooltip extends UniformHeatmapSeriesTooltip {

        public CustomHeatmapTooltip(Context context, UniformHeatmapSeriesInfo heatmapInfo) {
            super(context, heatmapInfo);
        }
        @Override
        protected void internalUpdate(UniformHeatmapSeriesInfo heatmapInfo) {
            ecgSurface.getXAxes().getAxisById("ecgx").setVisibleRange(new DateRange(startDate, stopDate));
        }
}

Second, I have one vertical line annotation and multiple text annotations. Every time I render the heatmap, I want to remove the text annotations and add some new text annotations as needed, without touching the vertical line annotation. Is there a way to only remove the text annotations?

Thanks a lot.

  • Gang Xu asked 4 years ago
  • last active 4 years ago
0 votes
6k views

I use a simple box annotation to highlight a section candlesticks on a chart. Currently I only see how to set this annotation X1 and X2 to Major grid units (ie 1,2,3,4,5). Since I would like to have this box annotation fully highlight only the desired candlesticks, is there a way to offset this X1 and X2 position by 0.5 so that it would include only (and fully) the desired candles? Apologies if I have missed this in the docs somewhere but I have been unable to find anything to accomplish this.

EDIT: For my x axis I am using a CategoryDateTimeAxis

Thank you.

  • Leland asked 4 years ago
  • last active 4 years ago
0 votes
7k views
 var annotationMax = new HorizontalLineAnnotation () {
                            Stroke = new SolidColorBrush (Colors.DarkRed),
                            HorizontalAlignment = System.Windows.HorizontalAlignment.Center,
                            Y1 = item.MaxBandwith,
                            Y2 = item.MaxBandwith,
                            X1 = item.FromWavelength,
                            X2 = item.ToWavelength,
                        };
                        var label = annotationMax.AddLabel ();

after last line label is null
???

0 votes
7k views

There is a problem with annotation drag listeners. OnDragEnded and in fact also OnDragStarted are called all the time (just like onDragDelta) instead of only on those particular events

Steps to reproduce
just add a listener to annotation (in my case CustomAnnotation)

.withAnnotationDragListener(object : OnAnnotationDragListener {
            override fun onDragDelta(annotation: IAnnotation, x: Float, y: Float) {
                //whatever
            }

            override fun onDragStarted(p0: IAnnotation?) {
                "onDRAGSTARTED".log()
            }
            override fun onDragEnded(p0: IAnnotation?) {
                "ONDRAGENDED".log()
            }
        })

Is there a solution?

0 votes
8k views

When I enter PathAnnotation in the xaml, I get the error “The type ‘s:PathAnnotation’ was not found.” I do have the following Annotation types available:
– AxisMarkerAnnotation
– BoxAnnotation
– CustomAnnotation
– HorizontalLineAnnotation
– LineAnnotation
– LineArrowAnnotation
– SeriesValueAxisMarkerAnnotation
– TextAnnotation
– VerticalLineAnnotation

I want to be able to make a star shape annotation, and PathAnnotation seemed to be the only way to do this. Please let me know if there’s another way to do this.

Thanks,
Rachel

0 votes
8k views

Hello there,

I’m trying to implement adding line annotation on touch, but this causes crash.

I’m watching example android app in fragment CreateAnnotationsDynamicallyFragment.

I guess, it should be very easy, but example uses data binding and part of code is hidden somewhere + source code is obfuscated, so it’s hard for me to understand what is wrong.

Can someone give a short example of how to add annotation on touch?

Thanks

Exception:

 Process: process_name, PID: 24978
java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Comparable com.scichart.charting.visuals.axes.IAxis.getDataValue(float)' on a null object reference
    at com.scichart.charting.modifiers.AnnotationCreationModifier.a(SourceFile:203)
    at com.scichart.charting.modifiers.AnnotationCreationModifier.onTouchDown(SourceFile:155)
0 votes
8k views

I have a DateTime X Axis, to which I have added a custom label provider – namely to convert UTC display time to LocalTime.

This works just fine for the AxisLabels, but I also have vertical line annotations and they are NOT using the label provider and are thus showing UTC times.

Is there any way to make the vertical line annotations use the same label provider? Or some way to override the vertical line annotation label function to set the time to local?

Picture Attached.

0 votes
8k views

I’m trying to add annotations on a chart but they are rendering above my legend.

Initially (similar to most of the demo code I’ve seen), I setup my modifiers, then created my series and animated them in — then added my annotations (adding to annotationGroup). This created a timeline of blank chart surface with legend (good so far), annotations popping in before the chart series animated in (weird / not good) and on TOP of the legend (really bad), then the animation of the series after that.

I’ve tried about everything I can think of and the best I’ve been able to do is use a completion block of the animation rendering the series — and moved my chart modifiers (and legend) into that completion block. If I put the annotations in the completion block, they will render after the chart modifier and I have the same problem (even if placed after the chart modifiers). I have to set the annotations before the animation, and then the chart modifier in the completion block will work and the legend will be above the . Of course, this is a bit odd too — as first my annotations pop up by themselves on the blank surface, followed by my series animating in, then at the end of the 2 second animation, the legend just pops in.

I really would like my legend to be rendered first on the blank surface and the annotations and chart series to animate in together under my legend. I’m gathering that’s unlikely (at least the animation part) — but is there anyway I can place my legend first and still have the annotations go under it? It feels like the layers should be: modifiers > annotations > rendered series. I also I’ve read this order before in some WPF docs I believe, but doesn’t seem to be respected on iOS?

UPDATE: My current work around isn’t sufficient because I really need access to the renderable series to create the annotations which means I really can’t defer my chart modifiers (i.e. legend) until after the annotations. Additionally, if I need to update (remove / re-add) an annotation due to a series being deactivated in the legend, now my annotations are on top of the legend again.

0 votes
11k views

I have an issue with the latest version of Scichart. I have a chart which we are exporting to an image after cloning. We are using the CreateCloneOfSurfaceInMemory API call to take the clone. The problem is that, the annotations are getting lost from the cloned surface. I spent some time debugging and found that this is getting lost when we have VerticalSliceModifier in the Modifier group. I have attached the SciChart_CreateAnnotationsDynamically example which is modified to replicate this issue.

0 votes
0 answers
9k views

Dear all,

I have my axis which are position on the Laft side of my chart. Then I have an annotation wich is define and where the labelPlacementProperty=”Axis”. By doing so the value of the axis when we move the cursor is display in a rectangle box.

my customer would like to get the labelPlacementProperty=”Right”, but by doing so , I am loosing the small rectangle around the axis value.

What is the way to get the annotation axis appearing on right side but still having the value inside a rectangle ?

(see image below)

0 votes
9k views

Dear all,

I am evaluating the graph control and I need to cover a request for my customer project.

The thing is that my customer have a bunch of data which gets display as scatter graph view.

The idea is that if the user is placing the mouse over a point, I need to display the current point value (x,y) as an information.
Then in an other hand, if the user click on the point, I need to open a text box and enter a description for that point. The comment and point link will be store in a database to be able to recall.

How cqn I do the 2 operations of displaying values on mouse over and poo up a text box for comment on point ckick ?

Thanks for your help on this

regards

  • sc sc asked 6 years ago
  • last active 2 years ago
0 votes
10k views

When Im trying to remove an annotation, I’m receiving an error:

java.lang.NullPointerException: Attempt to invoke interface method
‘void
com.scichart.charting.visuals.annotations.IAnnotationPlacementStrategy.drawAdorner(android.graphics.Canvas)’
on a null object reference
at
com.scichart.charting.visuals.annotations.AnnotationBase.onDrawAdorner(SourceFile:889)
at
com.scichart.charting.visuals.annotations.AdornerLayer.onDraw(SourceFile:144)
at android.view.View.draw(View.java:17071)
at android.view.View.updateDisplayListIfDirty(View.java:16053)

I’ve tried many ways, like:

UpdateSuspender.using(priceChart, new Runnable() {
    @Override
    public void run() {
        priceChart.getAnnotations().clear();
    }
});

and

UpdateSuspender.using(priceChart, new Runnable() {
    @Override
    public void run() {
        priceChart.getAnnotations().remove(myAnnotation);
    }
});
0 votes
16k views

It seems that if the axis is collapsed, all associated annotation labels are not visible (but their annotation line is visible).
Is there property or the like that will allow labels to be shown which are associated with a collapsed axis?

0 votes
13k views

I’m currently trying to adapt an example to post here as an example repro– But in the meantime I figured I’d post and see if there are any fundamental problems with trying to do this.

The exception message states:

Additional information: Cannot get data-value from coordinate as the associated Axis is null
0 votes
9k views

Hi, guys

Is there something similar like

  • (void)bringSubviewToFront:(UIView *)view;
  • (void)sendSubviewToBack:(UIView *)view;

from UIView but for chart Annotations?

Best regards,
Sushynski Andrei

0 votes
9k views

I hope you can help me I have managed to change the font color, size, but I do not know how to put the annotation with underlined font, who could give me a clue please. I would like to get something like what is shown in the image I attached. Thanks in advance.

0 votes
11k views

Dear All,

I would like to ask are there any method to draw a line (or annotation) by user touch event ?

For example user touch the chart to set the starting point of the line and then touch/drag to another point to draw the line.

Thanks.

  • Ray Hung asked 7 years ago
  • last active 5 years ago
0 votes
13k views

I have modified the single ended ray as found in another answer to be an infinite ray that extends both ends of the line until the touch the sides of the plot.

I would like to implement a label similar to in VerticalLineAnnotation but am unsure how I go about adding additional elements to the annotation’s template.

I have included my modified version of the rayannotation below.

/// <summary>
/// Defines a read-only or editable Line annotation, which draws a Ray to the edges of the chart viewport, depending on two X,Y coordinates
/// e.g. if X Y coordinates are placed inside the chart, then the line extends until it hits the edge or the chart viewport
/// </summary>
public class RayAnnotation : LineAnnotation
{
    private Line _line;
    private Line _ghostLine;

    /// <summary>
    /// Initializes a new instance of the <see cref="RayAnnotation" /> class.
    /// </summary>
    public RayAnnotation()
    {
        // Reuse LineAnnotation control template from SciChart
        DefaultStyleKey = typeof(LineAnnotation);

    }

    /// <summary>
    /// When overridden in a derived class, is invoked whenever application code or internal processes call <see cref="M:System.Windows.FrameworkElement.ApplyTemplate" />.
    /// </summary>
    public override void OnApplyTemplate()
    {
        base.OnApplyTemplate();

        AnnotationRoot = GetAndAssertTemplateChild<Grid>("PART_LineAnnotationRoot");
        _line = GetAndAssertTemplateChild<Line>("PART_Line");
        _ghostLine = GetAndAssertTemplateChild<Line>("PART_GhostLine");
    }

    /// <summary>
    /// Override in derived classes to handle specific placement of the annotation at the given <see cref="AnnotationCoordinates" />
    /// </summary>
    /// <param name="coordinates">The normalised <see cref="AnnotationCoordinates" /></param>
    protected override void PlaceAnnotation(AnnotationCoordinates coordinates)
    {

        // Calculate gradient of line
        double m = (coordinates.Y1Coord - coordinates.Y2Coord) / (coordinates.X1Coord - coordinates.X2Coord);
        double b = coordinates.Y1Coord - m * coordinates.X1Coord;

        if (double.IsNaN(m) || double.IsInfinity(m))
        {
            // Possible divide by zero above, just draw a single point for now
            _line.X1 = coordinates.X1Coord;
            _line.Y1 = 0;
            _line.X2 = coordinates.X1Coord;
            _line.Y2 = base.ParentSurface.ModifierSurface.ActualHeight;
            _ghostLine.X1 = coordinates.X1Coord;
            _ghostLine.Y1 = 0;
            _ghostLine.X2 = coordinates.X1Coord;
            _ghostLine.Y2 = base.ParentSurface.ModifierSurface.ActualHeight;
            return;
        }

        // Calulate projected X,Y point that touches the right/top edge, or left/bottom edge of the viewport
        double projectedX1 = 0;
        double projectedX2 = base.ParentSurface.ModifierSurface.ActualWidth;
        double projectedY1 = m * projectedX1 + b;
        double projectedY2 = m * projectedX2 + b;

        if (projectedY1 < 0 || projectedY1 > base.ParentSurface.ModifierSurface.ActualHeight)
        {
            bool isDown = projectedY1 < 0;
            projectedY1 = isDown ? 0 : base.ParentSurface.ModifierSurface.ActualHeight;
            projectedX1 = (projectedY1-b) / m;
        }

        if (projectedY2 < 0 || projectedY2 > base.ParentSurface.ModifierSurface.ActualHeight)
        {
            bool isDown = projectedY2 < 0;
            projectedY2 = isDown ? 0 : base.ParentSurface.ModifierSurface.ActualHeight;
            projectedX2 = (projectedY2-b) / m;
        }

        //Console.WriteLine("Projected x{0:0.00},y{1:0.00},x{2:0.00},y{3:0.00}", projectedX1, projectedY1, projectedX2, projectedY2);

        // Apply Calculated Line
        _line.X1 = projectedX1;
        _line.Y1 = projectedY1;
        _line.X2 = projectedX2;
        _line.Y2 = projectedY2;
        _ghostLine.X1 = projectedX1;
        _ghostLine.Y1 = projectedY1;
        _ghostLine.X2 = projectedX2;
        _ghostLine.Y2 = projectedY2;
    }
}
  • Hugoagogo asked 7 years ago
  • last active 7 years ago
0 votes
6k views

Hi,

Please take a look at the attached screenshot first.

I have a chart configured to draw some data. I need to draw SCIAxisMarkerAnnotation on Y axis. And it seems that annotation has alignment by right side of axis area. Is there a possibility to change it to left side of axis area?

0 votes
9k views

I’m adding an annotation to a chart with a DateTime x-axis. Without a label the annotation is successfully added. However, if I specify a label I get an InvalidOperationException when Add() is called. The exception message is “The Type this is a test is not a valid Comparable Type”}:

                var annotation = new VerticalLineAnnotation
                {
                    VerticalAlignment = VerticalAlignment.Stretch,
                    ShowLabel = true,
                    X1 = time.DateTime,
                    Stroke = System.Windows.Media.Brushes.Orange,
                    LabelPlacement = LabelPlacement.TopRight,
                    LabelValue = "this is a test",
                    LabelsOrientation = Orientation.Vertical
                };

                MyChart.Annotations.Add(annotation);

The LabelValue is obviously of type string and non-null and indeed of type IComparable. Any reason I can’t add it?

  • Dan Pilat asked 7 years ago
  • last active 6 years ago
0 votes
9k views

Hi;

I would like to delete selected annotation when “delete” key are pressed on it; like this :

(newAnnotation as AnnotationBase).KeyDown += (o, e) =>
{
this._chart.Annotations.Remove(newAnnotation);
};

I made this method when I create annotation on CreationModifier.AnnotationCreated event.
but is not work; the event are not handled.
Can you tell me how can I do this please

0 votes
11k views

How to get current Y value of annotation in code behind?

enter image description here

0 votes
12k views

To whom this may concern:

I’m having a slight issue (bug, possibly?) with custom annotations. I have created a custom annotation with an image (XAML shown below)

<s:CustomAnnotation x:Class="Dashboard.SciChartCustomComponents.CustomAnnotations.MicrostructureAnnotation"
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
                    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
                    xmlns:s="http://schemas.abtsoftware.co.uk/scichart"
                    xmlns:local="clr-namespace:Dashboard.SciChartCustomComponents.CustomAnnotations"
                    mc:Ignorable="d">

    <Border BorderBrush="White" BorderThickness="2" Background="Black">
        <StackPanel>
            <Image x:Name="annotationImage" Stretch="None" Width="150" Height="100" Visibility="Collapsed"/>
            <TextBlock x:Name="annotationText" HorizontalAlignment="Center"/>
            <TextBlock x:Name="parameterText" HorizontalAlignment="Center" Visibility="Collapsed"/>
        </StackPanel>
    </Border>

</s:CustomAnnotation>

The image is applied with the following code (note the anchor points are bottom-right):

var annotation = new MicrostructureAnnotation
{
    HorizontalAnchorPoint = HorizontalAnchorPoint.Right,
    VerticalAnchorPoint = VerticalAnchorPoint.Bottom,
    IsEditable = true,
    X1 = xValue, // Both Obtained from hitpoint X- and Y-Values
    Y1 = yValue
};

annotation.annotationImage.Source = // some image Uri
annotation.annotationText.Text = // some text
annotation.parameterText.Text = // some other text

So this successfully shows the annotation as i liked, shown in 1.png.

Now I have a function that collapses the visibility of the image, which yields an annotation that is removed from its anchor point (although the top-left location remains the same), shown in 2.png.

If I try to move the annotation after removing the image, the anchor point is in the location of where the top-left anchor should be when the image collapses but the image is still in the wrong location, shown in 3.png.

When I finally do move the annotation, the annotation moves away from the cursor to the top-left anchor point, shown in 4.png.

Again i’m not sure if this is a bug, but could someone please advise?

Thanks kindly!

— Ari

Edit: I don’t have this problem when setting the anchor points to top-left.

  • Ari Sagiv asked 8 years ago
  • last active 8 years ago
0 votes
18k views

Hi

I don’t understand how to disable dragging an annotation with mouse. I didn’t find anything in your documentation.

I have a simple annotation as follows:

                                <s:HorizontalLineAnnotation x:Name="line" IsEditable="False" IsManipulationEnabled="False"  IsAttached="True" Y1="2020" ShowLabel="True" LabelValue="" LabelPlacement="TopRight" Stroke="Red"/>

tried with IsEditable=”False” IsManipulationEnabled=”False” IsAttached=”True” but nothing seems to work.

Could you please help me ?
thank you

  • lorenzo522 asked 8 years ago
  • last active 8 years ago
1 vote
13k views

Hi, Andrew. I want to change the style of the control handle of annotation, including color, size, shape and so on. Forthmore, I want to and a rotating handle, even the control handle of corner radius in BoxAnnotation. Could you give me some suggestions?

0 votes
9k views

Hi, I need some new type of annotation, for example, TriangleAnnotation or HexagonalAnnotation. I would rather derive the new type from AnnotationBase than from CustomAnnotation, because I need more control points than one. what shall I do?

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