Tag: Annotations

Hi.

I need to change CustomAnnotation visual view, when property IsSelected = true.

I tried next code:

<Style x:Key="CustomAnnotationStyle" TargetType="{x:Type sc:CustomAnnotation}">
    <Setter Property="IsEditable" Value="True"/>
    <Style.Triggers>
        <Trigger Property="IsSelected" Value="True">
            <Setter Property="BorderBrush" Value="Orange"/>
            <Setter Property="BorderThickness" Value="2"/>
        </Trigger>
    </Style.Triggers>
</Style>

But it has no effect.
When I select the Annotation by mouse click, then it still have LightGreen rectangle.

In the Goal I need the Orange circle around of the Content of the Annotation.

Thanks.

Hi,

Basically, I want to draw line annotation and add over them the difference in percent between two Y points related to the axis. I tried this code:

    <s:LineArrowAnnotation Stroke="#555" StrokeThickness="2" X1="1.2" X2="2.5" XAxisId="XAxis1" Y1="3.8" Y2="6">
    <s:AnnotationLabel LabelPlacement="Top" LabelStyle="{StaticResource sideLabel}" Text="centered" />
</s:LineArrowAnnotation>

As you did in some of your examples but doesn’t seems to work with LineArrowAnnotation.

Please help me.

Thanks!

As usual the basics of SciChart seem to be eluding me and I can’t get the simplest of features to work (hence the reference to it in the title).

All I want is an annotation in the top left of the screen in which I can dynamically change the text from the code behind – but no matter what I do it just wouldn’t do it. I therefore started a test project to see if I could work out what was going on and have recreated the problem only using XAML.

It would seem the annotation will only appear if the XAxis is defined as a “CategoryDateTimeAxis” AND it’s defined within “SciChartSurface.XAxes” tags. Any other combination and it won’t work.

Anyway – if someone could cast their eye over my test code and explain what’s happening I’d be most grateful.

<Window
    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" x:Class="AnnotationTest.MainWindow"
    Title="MainWindow" Height="350" Width="525">
<Grid>

    <s:SciChartSurface HorizontalAlignment="Stretch" VerticalAlignment="Stretch" s:ThemeManager.Theme="Chrome">

        <!-- Works - Slimmed down from the "Annotations are easy" example 
        <s:SciChartSurface.XAxes>
             <s:CategoryDateTimeAxis AxisAlignment="Bottom" AxisTitle="XAxis 1" Id="XAxis1" TextFormatting="0.0#" AutoRange="Always"/>
        </s:SciChartSurface.XAxes> 
        -->
        <!-- Doesn't Work and this is from the "Interactions with Annotations" example 
        <s:SciChartSurface.XAxis>
            <s:CategoryDateTimeAxis AutoRange="Always"/>
        </s:SciChartSurface.XAxis>   
        -->

        <!-- Doesn't Work - Slimmed down from the "Create Annotations Dynamically" example
        <s:SciChartSurface.XAxis>
            <s:CategoryDateTimeAxis/>
        </s:SciChartSurface.XAxis>
        -->

        <!-- Doesn't Work - How our Axis are currently defined and what I would like to put a text annotation on
        <s:SciChartSurface.XAxis>
            <s:DateTimeAxis AxisTitle="Date" Id="XAxis1" AxisAlignment="Bottom"></s:DateTimeAxis>
        </s:SciChartSurface.XAxis>
        -->

        <s:SciChartSurface.YAxis>
            <s:NumericAxis TextFormatting="0.0#" VisibleRange="0, 10"/>
        </s:SciChartSurface.YAxis>

        <s:SciChartSurface.Annotations>
            <s:TextAnnotation HorizontalAnchorPoint="Center" Text="Anchor Center (X1, Y1)" VerticalAnchorPoint="Bottom" X1="5.0" XAxisId="XAxis1" Y1="8.0"/>
        </s:SciChartSurface.Annotations>

    </s:SciChartSurface>

</Grid>

Hi, in the Dynamically Create Annotations demo, the method on how annotations are created is by (for example a line):

1) First Click on the annotation button
2) Click on the SciChart Surface. This creates the first point of a line
3) Click again on the end point of the line.

Instead of having to do two clicks, is there a way to click and drag instead? eg.

1) First Click on the annotation button
2) Click on the SciChart Surface. This creates the first point of a line
3) drag to the end point of the line.

I just want to mimic Microsoft power point behaviour as our users are more familiar with it.

Thanks

I want to have a BoxAnnotation where Y1 (- double.Infinity) and Y2 (+ double.Infinity). Basically I wanna specify only X1 and X2. And the behaviour must ensure always the box annotations Y1 & Y2 stretch to visible area even when I resize (zoomout) the chart.

In the screen shot its not stretched.

How to create custom annotation which has BoxAnnotation with a VerticalLine Annotation at one end.

At present I’m achieving this by creating both annotations and synchronizing them in ChartModifier.
Look at the attached image where you can see two BoxAnnotations both having a VerticalLineAnnotation at one end. I’m disabling editing for BoxAnnotation and enabling editing only for VerticalLineAnnotation.

When VerticalLineAnnotation is dragged in X-Direction, I get the X1 value from it and manually set it to BoxAnnotations X2.

This is not good implementation. I can see lag between sync events. Is it possible to create a custom annotation which incorporates both Box and Vertical line annotations ? Or is it possible to set IsEditing for BoxAnnotations One End only ?

I am considering applying server-side licensing for my javerScript application.

In the document below, there is a phrase “Our server-side licensing component is written in C++.”
(https://support-dev.scichart.com/index.php?/Knowledgebase/Article/View/17256/42/)

However, there is only asp.net sample code on the provided github.
(https://github.com/ABTSoftware/SciChart.JS.Examples/tree/master/Sandbox/demo-dotnet-server-licensing)

I wonder if there is a sample code implemented in C++ for server-side licensing.

Can you provide c++ sample code?
Also, are there any examples to run on Ubuntu?

Hi, I’m trying to position vertical line annotations on a chart. I want to position them on a visible part of the chart, but I need to use the Absolute coordinate mode as I want the annotation to move with the data as the chart is panned or zoomed.

My question is then: how can I find the currently visible extents of the X axis? If the chart is zoomed or panned I need to know what the left and rightmost visible X-axis values are (independent of the data).

I have got a CustomTextAnnotation like in this example CustomTextAnnotation
I added a Rendertransform like this.

<s:TextAnnotation.RenderTransform>
    <RotateTransform Angle="90"/>
</s:TextAnnotation.RenderTransform>

But the AnchorPoint is not used as rotation center.
I thought of using ToCoordinate() but need a calculator for that which is not available within CustomTextAnnotation.

What is best practice to achive the requested rotation in sciChart?