SciChart® the market leader in Fast WPF Charts, WPF 3D Charts, iOS Chart, Android Chart and JavaScript Chart Components

0 votes

See image.
The plot can switch between numeric, datetime and and logarithmic axis. It only happens for the logarithmic one. They all share the same point marker code.

0 votes

Hello SciChart Team,

We are using SciChart v6.1.1.13156 since about a year in our main software that is used by customers worldwide.
The SciChartSurface-Style that all charts use is configured to use the VisualXcceleratorEngine (in DirectX9 mode, as some customers had problems with invisible charts on specific older intel graphics chipsets).

In the last weeks we had several inqiuiries from customers (from Japan, Korea), that the charts in their software do not update when adding new values, the chart is only updated when minimizing and then showing the window again. Another issue was that the X-Axis was updated fluently but the chart (line-chart) only very irregularly (about 2-3 times in a 30sec measurement which provides a value every 20msec). All of these customers use new laptops with 11th generation Intel CPUs. One of these had an Nvidia-graphics card installed an when forcing to use it with our software the charts worked perfectly.

We added an option in our software to Enable Software Rendering (Highspeed Renderer) to increase compatibility when having the above mentioned issues as we thought that it has to do with the VisualXcceleratorEngine, but this did not change anything unfortunately.

We want (and have) to solve this problem as this breaks the functionality of our software with some of our biggest customers.

Best regards,
Oliver from Cologne Germany

0 votes
0 answers

SplineLineRenderableSeries doesn’t render curved graph line properly in Swift , it renders stepped line for the data series .For reference please check the Screenshot attached ,ECG line(Green) rendered as stepped line (Marked by rectangle). Let me know anything I need to update in my code

Please find below the code for initialisation go the graph and updating the graph same. I am updating graph realtime with same DataSeries.

  1. Graph initialisation code

    func init_ECG_Chart()
    //Remove Theme From Chart By Apply & Remove & Change Border color
    SCIThemeManager.applyTheme(to: self.ecg_Chart_Surface, withThemeKey: SCIChart_Bright_SparkStyleKey)
    SCIThemeManager.removeTheme(byThemeKey: SCIChart_Bright_SparkStyleKey)

    self.ecg_Chart_Surface.isOpaque = false
    self.ecg_Chart_Surface.backgroundColor = .clear
    self.ecg_Chart_Surface.renderableSeriesAreaBorderStyle = SCISolidPenStyle(color: .clear, thickness: 0)
    let lineSeries = SCISplineLineRenderableSeries()
    lineSeries.strokeStyle = SCISolidPenStyle(color: ecgSelectedColor, thickness: 2.0)
    lineSeries.dataSeries = ecgLineDataSeries

    // lineSeries.resamplingMode = SCIResamplingMode_None //Resampling off
    // lineSeries.resamplingMode = SCIResamplingMode_Auto //Resampling off

    let xAxis = SCINumericAxis()
    xAxis.axisAlignment = .bottom
    xAxis.drawLabels = false
    xAxis.drawMajorGridLines = false
    xAxis.drawMinorGridLines = false
    xAxis.drawMajorTicks = false
    xAxis.drawMinorTicks = false
    let yAxis = SCINumericAxis()
    yAxis.axisAlignment = .left
    yAxis.drawLabels = false
    yAxis.drawMajorGridLines = false
    yAxis.drawMinorGridLines = false
    yAxis.drawMajorTicks = false
    yAxis.drawMinorTicks = false
    yAxis.autoRange = .never   //Stop auto ranging axis
    yAxis.visibleRange = SCIDoubleRange(min: -32, max: 96)

    // yAxis.visibleRangeLimit = SCIDoubleRange(min: -32, max: 96)

    yAxis.growBy = SCIDoubleRange(min: 0.2, max: 0.2)
    SCIUpdateSuspender.usingWith(self.ecg_Chart_Surface) {
        self.ecg_Chart_Surface.xAxes.add(items: xAxis)
        self.ecg_Chart_Surface.yAxes.add(items: yAxis)
        self.ecg_Chart_Surface.renderableSeries.add(items: lineSeries)
        //self.ecg_Chart_Surface.chartModifiers.add(items: SCIZoomExtentsModifier(),SCIPinchZoomModifier())

    } //Init ECG

  2. Graph updation code

    func update_ECG_Chart(xValues:SCIDoubleValues,yValues:SCIDoubleValues)

    SCIUpdateSuspender.usingWith(self.ecg_Chart_Surface) {
        self.ecgLineDataSeries.append(x: xValues, y: yValues)
      //  self.ecg_Chart_Surface.zoomExtents()

    } //Update ECG

0 votes

Hello Scichart Team again,

I’m trying to replicate anything like this (check Screenshot_2.png).

I can update the scichart background, but I just wanted to have a single color in the background, but it seems that there is an overlap of colors in X / Y as I show in the next printscreen (check Screenshot_3.png)

How I can solve this?

Waiting for feedback.

Many thanks,

Pedro Cruz

0 votes

Hello dear SciChart team

I am using your SciChart in my WPF project very well. It’s very wonderful. And I have one problem how to implement this chart using SciChart. I made a chart to show the market data real time and want to make a background be shaded on when special time frames.
I tried on some ways but can’t solve that problem. I attached the image file that I want to make.

Please help me.


0 votes

Hello dear SciChart team,

Our customer has a new security program that starts on Dlls that are copied into a directory during runtime. At the moment has the customer the problem that this security program starts on an AbtLicensingNative.dll. This DLL is in the following directory:
% USERPROFILE% \ AppData \ Local \ SciChart \ Dependencies \ v. \ x64.

For this reason the following questions:
Is this DLL safe?
Why is the dll only copied at runtime? Is there another solution for this?

best regards

0 votes

I have a LineRenderableSeriesViewModel, and I have a feature that allows the user to swap the dataseries with another. When this occurs I replace the dataseries property with the relevant dataseries.

However I find that when I do this, the chart does not always autorange to the where the new dataseries is. I can’t see the new plot when this occurs. I believe doesn’t happen if the new dataseries is being appended to, but only if the new dataseries that is chosen is not being appended.

0 votes

RenderableSeries Hit-Test is not working as expected. Some bugs on the the RenderableSeries Hit-Test. Distance between two points are less then its working most of the time and getting the isHit variable getting true. But the distance is high then the lines near to the point only getting the isHit true. I am attaching the image when the red marked area is working fine and the blue marked area not working.

0 votes


We have multiple sets of data that we’d like to display as a Stacked Column. The problem is that our data is jagged, meaning each series may not have a value for every value on the x-axis (it’s a time series by day).

Is there any way to present this data without having to merge all the x-values in every dataset? These a very large sets and it just does not seem to be efficient to do this.



0 votes

I have a problem with the 3D surface chart. I have used the 3D example from the Example Tutorial as an example. As soon as I make xSize and ySize larger than 128, a gap appears in the respective axes.
Is it possible that these sizes are limited? Or have I made a mistake?

In the attachment you will find the resulting pictures.
The good one has an xSize and ySize of 128 and the bad one 129.

0 votes

Hello Scichart team,

it’s possible to rotate yAxis (and put them horizontally), and adding some break lines if I have more than 1 word? Like:

Waiting for feedback.

Many thanks,

Pedro Cruz

  • Pedro Cruz asked 2 weeks ago
  • last active 5 days ago
0 votes

i recently saw documentation about compositeannotation in wpf

do you have same version for android?
how to combine all annotation as one annotation?

0 votes

Can I use the 30 day trial version to run a newly built exe file from the “exported” Visual Studio solution files which then runs into the “Sorry! You need to have a license to use SciChart.” run-time error? How can I find and activate the 30 day license to avoid this run-time error?

0 votes
0 answers

My chart is dynamic, adding data from the right side all the time, and scrolling the chart to the left. Now the chart can manually scroll to the right indefinitely, but there are many blank areas on the right side. What can I do to limit the range of scrolling to the right? Is there any way to limit the zoom ratio to prohibit the chart from scrolling to the right indefinitely?

0 votes

My chart is dynamic, adding data from the right side all the time, and scrolling the chart to the left. Now the chart can manually scroll to the right indefinitely, but there are many blank areas on the right side. What can I do to limit the range of scrolling to the right? Is there any way to limit the zoom ratio to prohibit the chart from scrolling to the right indefinitely?

  • WU GUANGYU asked 3 weeks ago
  • last active 2 weeks ago
0 votes

I have a method that adds a marker line to my chart. The issue I have it that calling this method results in a non-blocking async call but in other code where I call this, I want to access the markers immediately after adding the marker. Is there a way to call Annotations.Add synchronously?

public void CreateNewMarker(DateTime markerDate, Color color)
MainChart.Annotations.Add(new VerticalLineAnnotation()
Stroke = new SolidColorBrush(color),
StrokeThickness = 1,
X1 = markerDate,
StrokeDashArray = new DoubleCollection(new List { 6, 3 }),
IsEditable = false
catch (Exception ex)
Tracing.TraceError(piuModule, className + “.CreateNewMarker()”, “Error during the CreateNewMarker() method”, ex);

Other Method
calls CreateNewMarker(0
Access new marker Annotations by index, MainChart.Annotations[markerIndex].X1


0 votes

Hi, I just want to make sure

everything inside com.scichart.charting.visual will be considered as VIEW in MVVM pattern right?


0 votes

In Scichart Android version, ICategoryLabelProvider.transformDataToIndex(Date var1); accept date as parameter

but at version, int transformDataToIndex(double var1); it accept double?

then how to convert date to double?

and another question.

  1. how set start tick axis in category date axis?
    what i see here first tick of x axis always come with data, not like date axis which data can adapt their position itself.

  2. how to set time frame in date axis like category date axis?

  3. without scichart builder i cannot set time frame in categorydateaxis

0 votes

I have a 3D chart where we are loading .obj files. If I set the opacity on the element in Xaml it works. However, we want to be able to adjust the opacity with a slider. When we bind the opacity to the value of the slider the opacity does not change. Is there something else we need to do to get the opacity to change when the slider value changes? The slider has a minimum of 0 and a maximum of 1.

<s3D:SciChart3DSurface x:Name="ThreeDChart"
    <s3D:NumericAxis3D />
    <s3D:NumericAxis3D />
    <s3D:NumericAxis3D />
    <object:ObjectModel3D x:Name="BrainMesh"
                          Opacity="{Binding BrainOpacity}"
                          Position="0.5, 0.5, 0.5"
                          Scale="5, 5, 5"
                          Source="{StaticResource Brain}" />
        <s3D:OrbitModifier3D />
        <s3D:ZoomExtentsModifier3D />

Thank you!

0 votes

I’m evaluating chart libraries to my next project and I’m trying to do a simple chart like the one in the attached image.
It was actually very easy to do it using MPAndroidChart, however it’s been hard to do a simple task like put a label aligned with the column… I did take a look into the SciChart sample application, but the application just uses numeric labels…
Can someone provide some guidance of how to do this?

0 votes

I want to apply a Style that has removed the horizontal lines of the CursorModifier.

private void ExecuteLoadedCommand(StackGraphViewer parameter)
        if (root == null) root = parameter;

        root.sciChart.ViewportManager = _scrollManager;

        // Remove CrosshairsHorizLine
        root.sciChart.MouseMove += RemoveCrosshairsHorizLine;

    private void RemoveCrosshairsHorizLine(object sender, MouseEventArgs e)
        Line crosshairsHorizLine = root.sciChart.ModifierSurface.Children.OfType<Line>().FirstOrDefault(line => line.X1.CompareTo(0d) == 0);
        if (root.sciChart.ModifierSurface.Children.Contains(crosshairsHorizLine))
            root.sciChart.MouseMove -= RemoveCrosshairsHorizLine;

I want to solve it in View XAML, not ViewModel Code.

What should I do?

0 votes

I want to express a different graph according to the state of the button.

            <Style TargetType="s:SciChartSurface">
                    <DataTrigger Binding="{Binding Path=IsEnabled, ElementName=swStack}" Value="True">
                        <Setter Property="YAxes" Value="{Binding StackYAxisList}"/>
                        <Setter Property="RenderableSeries" Value="{s:SeriesBinding StackRenderableSeriesList}"/>
                    <DataTrigger Binding="{Binding Path=IsEnabled, ElementName=swStack}" Value="False">
                        <Setter Property="YAxes" Value="{Binding TotalYAxisList}"/>
                        <Setter Property="RenderableSeries" Value="{s:SeriesBinding TotalRenderableSeriesList}"/>

I get an error saying that s:SeriesBinding is not supported.

What should I do?

0 votes

I am using an old version of Scichart

Mainly I have no issue but I need an advice .

I am rendering scatter series and heatmap series and I don’t want to face performance issues. So as far as I knew I am able to render unsorted data , but internally does the Scichart do any sorting algorithm for this data ? by mean does Scichart order the data internally in anyway?

Since I am afraid to lose time when having millions of records to be rendered in realtime.
And do you suggest to sort the data before sending it to Scichart and how may this help us? because I am rendering single point and I don’t get it why do I need to sort the data for better performance ?

in addition , if you are sorting inside your library is there anyway to skip these sorting algorithms?
I appreciate if you can explain !

Thank you in advance

1 vote


I have multiple SciChartSurfaces aligned using the HorizontalGroupHelper. I also need to have multiple y-axes in the charts. I was hoping to use set the margin on each y-axis, but when I do, the upper axis is drawn outside the window. Is there a work-around?


<Window x:Class="ScichartTest.MainWindow"

        <ColumnDefinition />
        <ColumnDefinition />

    <!--  Chart left  -->
    <s:SciChartSurface s:HorizontalGroupHelper.HorizontalChartGroup="group">

                AxisTitle="x" />

                AxisTitle="Left y1"
                Id="LeftY1" />
                AxisTitle="Left y2"
                Id="Lefty2" />
                AxisTitle="Left y3"
                Id="LeftY3" />


    <!--  Chart right  -->

                AxisTitle="x" />

                AxisTitle="Right y1"
                Id="RightY1" />



enter image description here

0 votes
0 answers

We’re using Xamarin.Forms. We were using iOS build 5019 and Android build 4441 and we had a custom DatelabelProvider set on our X axis in both platforms which worked fine.

However after updating to latest builds (5022 and 4459), the provider’s FormatLabel (FormatLabelFormatted on Android) isn’t being called and the default label formatting is applied.

0 votes

.Net 6 MAUI preview has been released, so may i know scichart support MAUI ?
Can we use Xmarin charts directly to MAUI app ?

Can you provide some examples for MAUI ?

  • Abhilash R asked 1 month ago
  • last active 4 weeks ago
0 votes

I have added a real time value legend to my chart. This is working well, based upon examples I have found here at the forum and in the SciChart documentation.

My question is this:
How can I position this new legend (includes series color, series name and series YValue ) so that it is in relation to a single or multiple Y axis’s displayed. In other words I like it to positions itself in relation to the YAxis so it does not overwrite it, and stays on the plotting area.

Appreciate the help
Thank you

0 votes

We’re developing an extra web based front end for what was until now a monolithic WPF .Net 4.72 application and want to add a small service that we can host a REST API, that when given a GUID, can render the data into a scichart exported bitmap.

My plan was to use ASP.NET core to do this as the rest of web application will be done using this, but although I can install the scichart package, I can’t find a way to reference the Presentation Core dlls (needed for amongst other things the colors and content control stuff).

The project sdk is Microsoft.NET.Sdk.Web, but I can’t figure out how to do this.

1 vote

I am getting the alert message on our application and now I got the same message on the also. It’s not happening all the time. But it’s happening sometimes only on the application.

1 vote

SciChart is creating too much garbage objects/events* instead of reusing through pools (Analysis through dotMemory shows this). In complex applications this additional gc-pressure causes frequent lockups. (GC Pauses in 50-250ms+ range).

Top backtraces for GC-Problem:
– WeakEventTable.Purge
– Tick Rendering (TimeSpan, Strings)
– ProperyChangedEventManager.Purge

Top Types:
– WeakEventTable+EventKey
– HybridDictionary
– Double, String, TimeSpan
– Action

All of these top types/backtraces result directly from SciChart as we cross-verified with your 2D-Chart-Realtime-Series demo and by omitting the SciChart controls from our application. ( 2/3 of the total memory pressure comes from SciChart with even just 2 charts being present in our application, we see 5MB garbage memory traffic per 2 second, resulting in very frequent GC collections sporadically spiking into a high duration)

We currently use SciChart WPF V5, it seems SciChart WPF V6 Demo didnt fix this instead just using the LowLatency GC mode causing more frequent GC-collections causing worse overall performance in complex applications. (as we verfied in our application)

Is there plans to increase memory/object reuse/pooling and reduce events/actions? (70k allocations of events/actions for short time spans arent really understandable). What are those 70k events for simply rendering a chart with not much changing, see the attached image.

What settings/methods do you recommend to lower the Memory Pressure/WeakEvents resulting from SciChart usage?

What is the best rendering method to minimize GC pressure, we only require updates if new data becomes available through our application. Would it be manual?

Please comment

Thank you

0 votes

I want to create a heatmap sync with a CandlestickRenderableSeries which using DiscontinuousDateTimeAxis, is it possible to make heatmap column align with ohlc point?

  • ZHOU HANG asked 1 month ago
  • last active 1 month ago
1 vote

After seeing some strange behavior in my application, I have a simple repro case where hiding a renderable series that’s in a vertically stacked columns collection causes the entire screen to go black. I’ll attach a full viewDidLoad() below, but here’s the basic setup:

    let rsLeftSingle = SCIStackedColumnRenderableSeries()
    rsLeftSingle.dataSeries = dataSeriesLeftSingle
    rsLeftSingle.yAxisId = yAxisLeft.axisId
    rsLeftSingle.fillBrushStyle = SCISolidBrushStyle(color: UIColor.yellow)
    rsLeftSingle.strokeStyle = SCISolidPenStyle(color: UIColor.yellow, thickness: 2.0)

    let rsLeftDouble = SCIStackedColumnRenderableSeries()
    rsLeftDouble.dataSeries = dataSeriesLeftDouble
    rsLeftDouble.yAxisId = yAxisLeft.axisId
    rsLeftDouble.fillBrushStyle = SCISolidBrushStyle(color:
    rsLeftDouble.strokeStyle = SCISolidPenStyle(color:, thickness: 2.0)

    let stacks = SCIVerticallyStackedColumnsCollection()

    let legendModifier = SCILegendModifier()

That code displays a stack of yellow and blue bars, with a legend and checkboxes (both checkboxes selected). When I tap a checkbox to deselect it, the SCIChartSurface() goes blank, the legend remains on screen, and I see this message in the console:

Exception raised with reason: All stacked series in on collection should have the same amount of X Values

When I reselect that checkbox, I get my plot back.

There are no changes being made to the underlying data. Hiding/showing works correctly for horizontally stacked collection and for other renderable series types.

What’s your recommended workaround?

0 votes

Good day. I’m trying to add a panning functionality in a 3D plot using WPF. How can I achieve this?

0 votes

I have a question about an apparent regression/change from v2 to v4.

My chart uses an SCIHorizontallyStackedColumnsCollection with three SCIStackedColumnRenderableSeries instances. One of those is assigned to the right-hand Y axis, and the other two are assigned to the left-hand Y axis. Left and right Y axes have very different ranges.

In v2, each series in the group honored its assigned axis. In v4, each series is using the scale of the left-hand Y axis. This happens regardless of the order I add the renderable series to the columns collection.

In the example below, the magenta, blue, and yellow bars have a range of -2 to 2, and are assigned to the left-hand axis. The green bars have a range of 0 to 30 and are assigned to the right-hand axis. I expect all 4 bars to be displayed using the full vertical range of the chart, but instead everything is using the left-hand axis, and the non-green bars have very little displacement.

This is a change in behavior from v2 to v4. Is it intentional? Is there an easy workaround?

I tried to hack around it by having two different SCIStackedColumnRenderableSeries instances, one with 3 placeholder series/1 real series (RH axis) and the other with 1 placeholder/3 real series (LH axis). That doesn’t help. If there are two different column collections on the chart, they both use the left-hand axis, regardless of the order that they are added.

Minimal repro case is attached. But the crux is at the end. If I comment out the .add(rightStacks) call, I get desired behavior for the stack assigned to the left axis. If I comment out the .add(leftStacks), I get desired behavior for the stack assigned to the right axis. What I want is the chart I’d get by overlaying the second and third screenshots, but with the 0 point of left and right Y axis aligned.

    let rightStacks = SCIHorizontallyStackedColumnsCollection()

    let leftStacks = SCIHorizontallyStackedColumnsCollection()


I think I’ve found the cause.

If I manually set (at line 46) yAxisLeft.axisId = “yAxisMyLeft”, then when I render, I get this in the console log:

2021-03-10 16:02:07.993233-0800 SciChart POC[86749:4815412] [WARNING] – [Render Warnings] Could not draw a renderable series of type SCIHorizontallyStackedColumnsCollection. YAxis with Id == DefaultAxisId doesn’t exist. Please ensure that the YAxisId property is set to a valid value.

2021-03-10 16:02:08.509648-0800 SciChart POC[86749:4815412] [WARNING] – [Render Warnings] Could not draw a renderable series of type SCIHorizontallyStackedColumnsCollection. YAxis with Id == DefaultAxisId doesn’t exist. Please ensure that the YAxisId property is set to a valid value.

I conclude from this behavior that SCIHorizontallyStackedColumnsCollection is hardwired to the default axis internally, regardless of the settings of the collection members.

0 votes


I use a Scrollbar/Surface combination to have an overview over several RenderSeries. Since I need individual scaling on each Series I also add 1 YAxis per Renderseries

The problem is that (even when disabling everything drawing related to an axis) adding an axis adds 2 px of white space where the axis would be.

In the attached image you can see an example with 15 axes added.

Here’s the code adding the RenderSeries and the axis (we already tried so many things to make the whitespace disappear as you can see in “createNewAxis”):

public void AddSciRenderSeries(FastLineRenderableSeries renderableSeries)
    if (OverviewChartSurface.RenderableSeries.Contains(renderableSeries))


private NumericAxis createNewAxis(string channelId)
    NumericAxis scrollerYAxis1 = new NumericAxis();
    scrollerYAxis1.AutoRange = SciChart.Charting.Visuals.Axes.AutoRange.Always;

    scrollerYAxis1.DrawMajorBands = false;
    scrollerYAxis1.DrawMajorGridLines = false;
    scrollerYAxis1.DrawMajorTicks = false;
    scrollerYAxis1.DrawMinorGridLines = false;
    scrollerYAxis1.DrawMinorTicks = false;
    scrollerYAxis1.DrawLabels = false;

    scrollerYAxis1.BorderBrush = Brushes.Red;
    scrollerYAxis1.FontSize = 0.1;
    Trace.WriteLine("AxisOffset: " + scrollerYAxis1.GetAxisOffset());
    scrollerYAxis1.Padding = new Thickness(0);
    scrollerYAxis1.Margin = new Thickness(0);
    scrollerYAxis1.BorderThickness = new Thickness(0);
    scrollerYAxis1.Id = channelId;

    return scrollerYAxis1;

What shall we do to remove the gap on the right?

Thanks for your help!

1 vote

Hi, I wanted to make a multiple Y-Axis scale with multiple series plot into their respective Y scale. Like this,

Series A plot to 1st Y-axis Scale
Series B plot to 2nd Y-axis Scale
Series C plot to 3rd Y-axis Scale
Series D plot to 4th Y-axis Scale

and all those series are not overlapping each other. I want to do like the picture attached but with the series are not overlapping to each other.

0 votes

I’m able to style the AxisLabelContainerStyle and AxisLabelTemplate for my TimeSpanAxis but it doesn’t seem to be working for my NumericAxes/NumericAxisViewModels. Attached is a photo showing the styled TimeSpanAxis (cyan) and the default NumericAxis (green).

Here are the templates:

<Style TargetType="{x:Type sci:AxisLabelControl}" x:Key="CursorAxisLabelStyle">
        <Setter Property="Background" Value="Black" />
    <DataTemplate DataType="{x:Type sci:AxisInfo}" x:Key="CursorNumericAxisLabelTemplate">
        <Border BorderBrush="DarkCyan" BorderThickness="1">
            <TextBlock Foreground="Cyan" Margin="2" Text="{Binding DataValue, StringFormat={}{0:0.0}}" />
    <DataTemplate DataType="{x:Type sci:AxisInfo}" x:Key="CursorTimeSpanAxisLabelTemplate">
        <Border BorderBrush="DarkCyan" BorderThickness="1">
            <TextBlock Foreground="Cyan" Margin="2" Text="{Binding DataValue, StringFormat={}{0:hh}:{0:mm}:{0:ss}}" />

Here are the styles for the axes:

<Style TargetType="{x:Type sci:NumericAxis}">
        <Setter Property="sci:CursorModifier.AxisLabelContainerStyle" Value="{StaticResource ResourceKey=CursorAxisLabelStyle}" />
        <Setter Property="sci:CursorModifier.AxisLabelTemplate" Value="{StaticResource ResourceKey=CursorNumericAxisLabelTemplate}" />
    <Style TargetType="{x:Type sci:TimeSpanAxis}">
        <Setter Property="sci:CursorModifier.AxisLabelContainerStyle" Value="{StaticResource ResourceKey=CursorAxisLabelStyle}" />
        <Setter Property="sci:CursorModifier.AxisLabelTemplate" Value="{StaticResource ResourceKey=CursorTimeSpanAxisLabelTemplate}" />

I will note that I’m binding my YAxes to an ObservableCollection because throws a binding error. But I’ve also tried using {x:Type sci:NumericAxisViewModel} which doesn’t work because it doesn’t derive from “FrameworkElement” and <x:Type sci:NumericAxisForMvvm} doesn’t style either.

I’m just not sure how to best make the NumericAxes styled.


  • Greg Knox asked 2 months ago
  • last active 2 days ago
1 vote


In past versions of SciChart JS I was able to run a webpack-built set of static files on an Nginx-based Docker container without issues.

I’m now seeing the error “memory access out of bounds” (screenshot attached) when doing this, and as a result does not render the charts at all, whether it’s running locally or hosted on AWS. This happens in both Chrome and Firefox.

It runs absolutely fine using webpack dev server.

The error seems to be coming from scichart2d.wasm. Any ideas?


0 votes


I am having some difficulties using a custom DateTickProvider.

I am trying to offset the values to “anchor” the chart to specific local time (see original question at “” for details)

class CustomDateTickProvider() : DateTickProvider() {
    override fun updateTicks(minorTicks: DoubleValues, majorTicks: DoubleValues) {
        // super appears to sometimes recalc based on GMT, and sometimes provide offsets from my previous offsets.
        super.updateTicks(minorTicks, majorTicks) 

       // My offset code here, assumes tick values are GMT based...

My code usually works, but sometimes it doesn’t. It appears that when I call super.UpdateTicks(..), it usually generates new ticks based on GMT, but sometimes it simply provides a small offset (like when I pan) based on existing tick values. Is that correct?

Is there a way for me to Force updateTicks to always recalculate based on GMT, or a way for me to tell if updateTicks is recalculating based off GMT or just doing offsets on the existing tick marks?

Or should I be going at this in a different direction?

Thank you.

  • C Bolton asked 2 months ago
  • last active 1 month ago
1 vote

Try to integrate new SciChart.xcframework 4.2.0 instead of SciChart.framework 2.0 to the project and build failed in Xcode 12.4 with the next errors:
1) 335th line: Editor placeholder in source file
2) 549th line: Cannot convert value of type ‘Bundle.Type’ to expected argument type ‘Bundle’ SCIThemeManager.addTheme(byThemeKey: theme, from: Bundle)
3) 768th line: Method does not override any method from its superclass
override func internalHandleGesture(_ gestureRecognizer: UIGestureRecognizer)
1) 4th line: Cannot find type ‘SCIAnnotationDragListener’ in scope
class AnnotationDragListener: SCIAnnotationDragListener
1) 475th line: Editor placeholder in source file
SCIThemeManager.addTheme(byThemeKey: theme, from: Bundle)
Can you tell me please can I launch SciChart.xcframework 4.2.0 in Xcode 12.4? Any how to solve this issues?

1 vote

What’s the new (Swift) signature for V2’s updateDataContext(withContext label: SCIDefaultTickLabel!, data dataValue: SCIGenericType, style: SCITextFormattingStyle!) -> SCITickLabelProtocol!? Obviously the SciGenericType is different.

My searches aren’t pulling up anything except hits on the V2 documentation, and all of those now 404.

I’m using that call to put gesture recognizers on some tick labels. I want those gesture recognizers to be different than the one I’m putting on the entire chart. And I need to update the locations every time theX axis changes. An alternate way to achieve this would also be welcome.

1 vote

In Scichart 2, we had some code that added some annotations in the SCIAnimation completion block. Here’s a snippet. We need the self.renderAnnotations() to happen AFTER the chart data range is set, because we only draw annotations that will fit within the individual bar stack elements.

        SCIUpdateSuspender.usingWithSuspendable(sciChartSurface) {
            if hasBarData {  
                let animation = SCIWaveRenderableSeriesAnimation(duration: 1, curveAnimation: .easeOut)
                animation.completionHandler = {
                    self.configurationButtons?.forEach { $0.isUserInteractionEnabled = true }

Here’s the current rewrite to run under Scichart 4. With this code, yAxisLeft.visibleRange has not been updated to the correct data range when renderAnnotations() is called.

Uncommenting the 3 animator-related lines near the bottom doesn’t make a difference, and my listener function is never called.

I’ve also tried wrapping the renderAnnotations() call in a DispatchQueue.main.asyncAfter() call. That sometimes works, and sometimes results in renderAnnotations() not being called at all.

How do I get renderAnnotations() (and the following line looping on configurationButtons) to run, reliably, after the axis range setup is complete?

How do I get my wave animation back?

        SCIUpdateSuspender.usingWith(sciChartSurface) {
            if hasBarData { 
                self.configurationButtons?.forEach { $0.isUserInteractionEnabled = true }
//                let animator = SCIAnimations.createWaveAnimator(for: columnCollection)
//                animator.add(self)
//                animator.start()
0 votes
0 votes

pointMarker max and min values marker are cropped when autoRange is enabled. Check the attached image.

0 votes

Hello again,

Pardon me if I’m missing something obvious, but I am trying to center align a multiline tick label. I want both lines of the label to be centered. By default they seem to be left-justified. See attached image of current behavior.

xAxis = DateAxis(this)
xAxis.textFormatting = "h:mma\nMMM d" 

Thank you.

  • C Bolton asked 2 months ago
  • last active 2 months ago
0 votes

I was looking over Tutorial 07 – Tooltips and Legends and the Chart Legends API demo, and noticed that the checkboxes and legend font had some styling applied. But, when I implement a legend on my own it uses the default font (or whatever global font style I used) and the default HTML checkbox styling. I was wondering if you had modified the styling using an outside CSS file, if there is an API endpoint for modifying the styling of the legend, or if this is possibly a bug. I did see that there was an applyTheme() method available, but I thought that it might not apply to this situation. I also tried to look through the example code provided for the Chart API Demo, but I couldn’t find anything that pointed one way or the other.

I have attached screenshots of what the legend looks like in the two examples, as well as a screenshot of what the legend looks like when I implement it on my own. I have also included a zip file with the demo application I created.


0 votes

Good day guys. I have download SciChart_iOS_SDK_4.2.0.5533 on Macbook M1. And try to integrate ios-arm64_armv7 verions to my project. I have added SciChart.xcframework to frameworks in Xcode 12.4. But the build is failed with a few errors:

  1. unable to load standard library for target arm-64-apple-ios9.0
  2. Failed to build module ‘SciChart’ from its module interface, it may have been damaged or it may have triggered a bug in Swift compiler when it was produced.

Can you tell me please did I use the right version of SciChart.xcframework for apple silicone? And how to solve this errors?

0 votes

Good day! I have download this zip archive, on my laptop. Opened it and can not find the file SciChart.xcframework, according description from this article. I need to add library to Xcode frameworks, but I can not do it. Please can you tell me where can I get this file.

0 votes

Do scichart supports microsoft blazor ?
If yes, Any examples available ?

  • Abhilash R asked 2 months ago
  • last active 2 months ago
0 votes

I’m not sure if I’m understanding the Axes minorsPerMajor behavior correctly, or if this is a Scichart issue.

Using a “vanilla” axis like:

xAxis = DateAxis(this)
xAxis.drawMajorGridLines = false
xAxis.drawMinorGridLines = false
xAxis.drawMajorTicks = true
xAxis.drawMinorTicks = false
xAxis.textFormatting = "h:mma\nMMM d"
xAxis.subDayTextFormatting = "h:mma\nMMM d"
xAxis.minorsPerMajor = 1 // does not change # minor ticks no matter what it is set at, if drawMinorTicks = true
val xAxes: AxisCollection = chartSurface.getXAxes()

If I set drawMinorTicks=false, I get no minor ticks, as expected. However, if I set it to true, I always get a bunch of ticks, no matter what I set minorsPerMajor to. I want just 1 mnor tick between majors. I’ve attached screenshots of the axis with drawMinorTicks set to both true and false using the above code.

Thanks for your assistance.

  • C Bolton asked 2 months ago
  • last active 2 months ago
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