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Greetings! I see you have support Xamarin.iOS and Xamarin.Android, however, I’m not sure about support status: do you support .NET 7 iOS and Android?

Hello,
tell me please, how can I add such indicators on yAxis. Maybe you have some example on sandbox for JS.

Thank you!

I created a simple .NET6 WPF application and added the SciChart assembly references. I call SciChartSurface.SetRuntimeLicenseKey(…) in App constructor and run the application. I get the following exception:

*System.TypeInitializationException: The type initializer for ‘njm’ threw an exception. Source=SciChart.Core

Inner Exception 1:
InvalidOperationException: babel m0 7238858: Method not found: ‘System.Reflection.Emit.AssemblyBuilder System.AppDomain.DefineDynamicAssembly(System.Reflection.AssemblyName, System.Reflection.Emit.AssemblyBuilderAccess)’.

Inner Exception 2:
MissingMethodException: Method not found: ‘System.Reflection.Emit.AssemblyBuilder System.AppDomain.DefineDynamicAssembly(System.Reflection.AssemblyName, System.Reflection.Emit.AssemblyBuilderAccess)’.*

Everything works well if I use SciChart in a .NET4.8 WPF application. How can I fix this? Thanks.

We’re working on a Nyquist plot using the latest SciChart SDK for WPF.
We have quite a MVVM dependent structure already in place.

We are working with 3D frequency based Complex data. The Nyquist plot would have 2 axes – Y for Imaginary values and X axis for Real values. We apply some averaging and post-processing of the 3D data to put in 2D form and show it in the Nyquist plot.

However, we’d like to be able to scroll the data at certain frequency ranges without showing the actual frequency graph in the plot. Is there a possibility to implement an independent scrollbar containing a averaged magnitude graph (similar idea to the processing of the Nyquist data) over a frequency range? We’d like to scroll this frequency range and on selected range changed to recalculate data in the Nyquist plot.

We have quite an extensive graphing structure implemented already. The main issue I’m currently facing is that the scrollbar is bound to the SciChartSurface and I cannot seem to figure out how to build it more like a “sexy” frequency range selector while staying within the SciChart library? Is there any possibility to not be bound to the SciChartSurface? And of course, the axes are quite different – in the Nyquist we have linear real and imaginary values (-2 to +2, for example) whereas the frequency range would extend much further data-wise (0 – 3000 Hz, for example).

Any help would be appreciated. Feel free to ask for more details.

Hello,

Python with Matplotlib allows us to draw a line series that has multiple color depending on something else as shown below (https://matplotlib.org/3.3.0/gallery/lines_bars_and_markers/multicolored_line.html):

Is it possible with SciChart (WPF version)?

Is there any way to write data labels in Android? I know it exists in JavaScript, but I can’t find a way to do it in Android.

I build a .net6.0 project, and add an scichart, when I set the min of visible range of Axis to a bit less than 0, for example -1, the first tick will be zero ,but will show as -0, which is very weird.

And the situation occurs on demo of Scichart, too.

Please tell me, is it possible to make sure that there is no empty space between records on those days when there is no trading on the stock exchange? It appears that the X-axis is linear and not transactional. How can I make it transactional?

https://www.scichart.com/questions/wpf/i-want-to-bind-selectedpointmarkers-of-datapointselectionmodifier

Hello.
Referring to the link above, we have modified the ViewModel side to maintain the selection state of chart points.

It works fine for a single chart, but when I have multiple charts, the selection points are interlocked between charts. I would like them to be independent of each other.

I wasn’t sure if there was a problem with my code or with the DataPointSelectionModifier, so does anyone know?

I have attached a code sample and a GIF of a working image.

※To reproduce this, click the three points in order from the top while holding down the control key on “Chart1” to make the three points selected. The color of the points will change from blue to red.
Next, while holding down the control key in “Chart2,” click on the bottom point. Then, in “Chart2,” four points are selected, even though only one point is pressed in total.

That is all. Best regards.

I work on a SwiftUI project that has integrated SciCharts.

What I’ve noticed is that while there are SwiftUI examples available, they are rather basic and when I replicate the example code over in my project, it does not run as we expect and in some cases does not run at all.

Currently there seems to be issues with the SwiftUI run loop, SwiftUI’s use of structs, and SciCharts use of pointers that make building complex charts within complex user interfaces rather challenging.

I needed to do a lot of work to get the SwiftUI example code to work in my project, and we’re still facing some challenges. Can we expect better SwiftUI support in the future, such as SwiftUI views included in the SDK or if this work has been done can the documentation be linked?

I am using ImpulseSeries3Dgraph in some positions labels are overlapping on the graph, is there any way to increase the space between axis labels and the graph? please look into the attached image.

Hello support team,

I’m using a SciChartSurface Chart with a CategoryDateTimeAxis (xAxis).
The chart should contain three stacked bar columns and Annotations between the columns.

How can I place the Annotations exactly between the columns with consideration of the dynamic width of chart surface? I haven’t found the exactly property or solution for this particular case.

Thanks for your support in advanced!

Hello there,

I am new to SciChart and trying to implement custom SCICursorModifiers tooltip,

It’s almost done, except one issue, i.e I am not able to hide the X axis (or) Horizontal line which is in green colour, it is showing up in the background whenever I am trying to use the tooltip.

The line which needs to be hidden

I tried with following below code but it is not working

extension SCIChartTheme {
    static let berryBlue: SCIChartTheme = SCIChartTheme(rawValue: "SciChart_SciChartv4DarkStyle")
}

SCIThemeManager.addTheme(.berryBlue, from: Bundle.main)

Is there any way to achieve this

Thanks in Advance

I have a scatterplot with different series of points and I need to figure out a way to draw each point separately in a different Z order. This will acheive “layering” of the points based on some metadata criteria.

The main issue to solve here is as follows. Each series can have “highlighted” points (outlined in blue on the chart, uses SciChart point selection) and “selected” points (denoted by a star point marker) which are tied to a selection in a grid. Any point in any of the series can be Highlighted and/or Selected. I need the the non-selected and non-highlighted points to be drawn first, then the selected points, then the highlighted points. This would guarantee that the highlighted points are always drawn on top of all others, and the selected points drawn on top of all but the highlighted.

My attempt has been to create a custom chart modifier and override OnParentSurfaceRendered. In that method I build dictionaries of points based on the metadata grouping criteria, then start with the lowest Z index group (the non-highlighted and non-selected points) draw those points, and continue up to the highest Z order group (the highlighted points).

Is there a simpler way to achieve this point layering functionality across data series?

Thanks.

I’m using the ZoomHistoryManager in my application which works great!

But how can I add my own entry to the undo/redo stack?

On my viewmodel I have

 /// <summary>
/// XAxisRange
/// </summary>
public DoubleRange? XAxisRange
{
    get => _xAxisRange;
    set => SetProperty(ref _xAxisRange, value);
}

private DoubleRange? _xAxisRange = null;

/// <summary>
/// YAxisRange
/// </summary>
public DoubleRange? YAxisRange
{
    get => _yAxisRange;
    set => SetProperty(ref _yAxisRange, value);
}

private DoubleRange? _yAxisRange = null;

and I want to implement something like :

 public void CustomRangeUpdate()
{
    if (RenderableSeries.Count > 0)
    {

        XAxisRange = new DoubleRange(x1, x2);
        YAxisRange = new DoubleRange(y1, y2);

        ZoomHistoryManager.SaveLatestRange(new AxisKey("DefaultAxisId", true), XAxisRange);
        ZoomHistoryManager.SaveLatestRange(new AxisKey("YAxis", false), YAxisRange);
        ZoomHistoryManager.PushAll();
    }
}

But it looks like I am using it incorrectly as it doesn’t add any entries. I’ve also tried Push() with no luck

We have been testing different limits of data types we are aiming to draw to the chart, and have found that if all of the values in a series are the same, very near 0, float value, then the line isn’t drawn. We do, however, get the value showing up on the vertical line annotation.

Though we are not using the latest version of SciChart in our production app (Net 4.6.1 requirement, but upgrading that soon), I have managed to reproduce the same in a very simplified .Net7 app using the latest version (7.0.2.27161). I have attached both the test app (with my runtime key removed) and a screenshot of the app.

Here is the code we are using to generate the sample series in the code behind of MainWindow.xaml:

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        this.Loaded += OnLoaded;
    }

    private void OnLoaded(object sender, RoutedEventArgs routedEventArgs)
    {
        var floatData = new XyDataSeries<double, float>();

        for (var i = 0; i < 1000; i++)
        {
            floatData.Append(i, float.Parse(Math.Pow(2, -126).ToString("E")));
        }

        this.FloatSeries.DataSeries = floatData;
    }
}

MainWindow.xaml contains just a SciChart Surface, as follows:

<s:SciChartSurface x:Name="Surface">
            <s:SciChartSurface.RenderableSeries>
                <s:FastLineRenderableSeries x:Name="FloatSeries" 
                                            Stroke="#FF4083B7"/>
            </s:SciChartSurface.RenderableSeries>

            <s:SciChartSurface.XAxis>
                <s:NumericAxis AutoRange="Always"/>
            </s:SciChartSurface.XAxis>

            <s:SciChartSurface.YAxis>
                <s:NumericAxis AutoRange="Always"/>
            </s:SciChartSurface.YAxis>

            <s:SciChartSurface.ChartModifier>
                <s:ModifierGroup>
                    <s:RubberBandXyZoomModifier />
                    <s:ZoomExtentsModifier />

                    <s:VerticalSliceModifier>
                        <s:VerticalSliceModifier.VerticalLines>
                            <s:VerticalLineAnnotation X1="500" 
                                                      IsEditable="True"
                                                      LabelTextFormatting="E"
                                                      Stroke="White" />
                        </s:VerticalSliceModifier.VerticalLines>
                    </s:VerticalSliceModifier>
                </s:ModifierGroup>
            </s:SciChartSurface.ChartModifier>

            <s:SciChartSurface.Annotations>
                <s:TextAnnotation Text="Test app highlighting problem when all x values are floats with the same scientific value"
                                  CoordinateMode="Relative"
                                  X1="0" 
                                  Y1="0"
                                  Margin="2"/>
            </s:SciChartSurface.Annotations>
        </s:SciChartSurface>

Adding another value to the series with result in the line being drawn, as long as it is sufficiently different to the others.

What would be the best way to get this data showing to the users? Whilst highly unlikely the user is going to use such values, we cannot discount this. Would extending the ViewportManager to provide our own range be the best approach? If it impacts on the suggestions, due to our implementation requirements our production app will only show up to two series per surface (with the same data type), but we could be showing upwards of 256 charts (with one of 12 data types as their y-axis type). All of our charts are linked to a common TimeSpanAxis for the x axis.

Hi there,

Wow this library has come along way in ten years. My question is related to interaction between RS and the legend that is rendered by the chartmodifier.

I declare the legend something like this during the initial bootstrapping of the plot view:

        const legend = new LegendModifier({placementDivId: "legend-goes-here", id:"legend"});
        sciChartSurface.chartModifiers.add(legend);

After that, I have a custom interface available for users to change things, which eventually results in visibility or color changes, updating an RS something like this:

        const thisRs = surface.renderableSeries.getById(`${s.fileId}-${s.name}`);
        if (thisRs) {
            thisRs.isVisible = s.isVisible;
            thisRs.stroke = s.visualInfo?.colorCode ?? "#FFFFFF";
        } 

These changes do not appear to be propagated to the legend despite the series on the plot changing. I guess my questions are:

1) What’s the expected behavior/is there something obvious I’m missing about the model?
2) Any suggestions?

It may very well be somewhere lost in my fairly complex React app, but I first wanted to confirm that I’m not missing something in the api.

Thanks!
Dan

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,

Hi,

In the interface IRenderableSeriesViewModel an IncludeLegend property would be helpful (analogous to LegendModifier.IncludeSeriesProperty). Otherwise you have to override the LegendModifier.GetSeriesInfo method and implement the logic yourself.

regard
Tobias

Hello,

We have a heatmap where we can zoom in using the MouseWheelZoomModifier. Essentially we want to stop zooming at a certain visibleRange level and we cannot achieve it. Currently we have a heatmap that’s about 1500 pixels in width (with 1500 datapoints, 1-to-1), but the user can zoom so far you essentially see just 1 data point spread over the 1500 pixels.

We want to be able to zoom, but up to a certain limit, let’s say 100 datapoints visible. When visibleRange.max – visibleRange.min <= 100 we want to stop zooming.

We’ve tried suspendUpdates() and manually setting the visibleRange, but this doesn’t produce the desired results because suspendUpdates stops everything (including zooming out again) and resetting visibleRange solves it for a second, but the user is able to zoom in again. We also tried a custom mouseWheelModifier class and just removing the zoom in functionality at the treshold but that does not seem to work because scichart gives an error of having different mouseWheelModifiers.

I hope that this problem was expressed sufficiently. Please let us know if you have any questions.

We would like to add an sphere on a 3D surface graph between steps. We are using a SurfaceMeshRenderableSeries3D and we have the X and Y indices of the point. Is there a way to do this out of the box?

Or is there a way to get the interpolated point using the data series and the indices?

If that is not possible, is there an algorithm we could get from you to do the calculation ourselves?

Currently we are using a XyzDataSeries3D and adding the point to that, but our interpolation algorithm must not be the same as yours, as the point does not stay on the surface of the graph in between points.

Following the “How to Template the Axis Title” sample and using a simple TextBlock with TextWrapping=”Wrap” I am seeing strange resizing of the main chart elements especially with a scrollbar.

The attached image shows an example app (code available).

The first chart is normal (title clipped).
The second chart has the wrapping textblock and a scrollbar. The scrollbar is off the edge, the chart view area is off the edge. The entire axis label is still not visible (“Lorem ipsum dolor sit amet, consectetur”)
The third chart has no scrollbar so fits elements on the window, but still does not show all text.

The components creeping offscreen is the big problem I cannot figure out how to fix. Please

Note also happens in v7

Hello All,

Is there a way to have a cursor modifier display on a mouse left/center/right click instead of automatically showing when the mouse is over the chart? I tried setting the ExecuteOn property but had no effect.

Thanks in advance,
Sergio.

Hi,

The axis labels are not always showing when zoomed in/out.
Is there a way/workaround to persist the end labels and also make it editable?

Please see attached pic

Thanks
Pramesh

Hi SciChart team,

first of all I want to say that I still think SciChart is great! However, I am quite frustrated at the moment. In small applications, the chart and its annotations work very well (yes “Annotations are Easy!”), but in large industrial applications with many views and millions of lines of code, there are from time to time difficult complications with the chart. This is also the case now with the Annotation Creation Modifier. As far as I can see, the AnnotationCreationModifier.OnModifierMouseUp method uses the annotation’s IsSelected state to determine whether to create a new annotation or complete one. With custom composite annotation it can happen that a mouse click first selects the annotation and only then AnnotationCreationModifier.OnModifierMouseUp is called (see attached screenshots).
Sometimes it works, sometimes it doesn’t, depending on where the mouse is.
The AnnotationCreationModifier should not use the annotation’s IsSelected state to complete its internal “edit mode” and call “OnAnnotationCreated”.
Or is there already a solution for this?

regards,
Tobias

Currently, I am creating a line chart and appending a lot of fetched data to the data series. The problem is that I have to recreate the chart when I move to another page that is using the same chart from the previous page. Therefore, I have to fetch the data and append it to the chart data series again.

Is there any way to reuse the chart itself without recreating the whole chart on another page?

Hi, I’m struggling to reduce times for loading draw (5,000Series x 5,000points) x 10 charts
which is in Scichart example ‘Load 500Seriesx500points’.

1. Present, Loading (5,000Series x 5,000points) x 10 charts consumes about 1 minutes.
   How can i load and draw this more faster?

2. And While in loading, how can i generate and show a Progress bar?

I am using a axis line chart from the js scichart. I want to change the font size of a legend. How do I change the font size of a legend?

I wanted to experiment with adding a tooltip to the SciChart_ScatterChartPerformanceDemo.

I extended the xaml with

 <s:SciChartSurface.ChartModifier>
            <s:ModifierGroup>
                <s:MouseWheelZoomModifier/>
                <s:TooltipModifier />
            </s:ModifierGroup>
        </s:SciChartSurface.ChartModifier>

However, I have noticed that the tooltip doesn’t seem to react properly to the geometry under the cursor. The tooltip will often show up when the cursor is outside the geometry.

If you use a SquarePointMarker with a width and height of 25, the tooltip pops up even when you’re a fair distance away from the geometry.

The hit detection doesn’t appear to be working correctly?

Edit : Also, it appears I am unable to answer questions here, when I add an answer, it accepts it, but doesn’t show anything?

Hi~
I am trying to create a plot that animates ODS (Operating Deflection Shape) using FRF (Frequency Response Function) data. Is ODS animation possible using scichart’s gemoetry 3D plot?
Thanks.