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Hi guys,

I purchased sci chart recently and have been using it in our trading applications. We have a requirement to produce some reports around our activity that are not numeric or date time on the x-axis.

I assumed sci chart would be able to handle text on an axis but it seems that it cant. Is there any work around to this?!

We really do not want to have to buy another charting package just to produce some simple charts and we love sci chart for everything else…

I have a ViewModel class with three controls, two text boxes and a checkbox. The two text boxes are supposed to control minimum and maximum of the chart, and the autoscale should set the AutoRange of the chart.

I’ve got my XAML like this

<sc:SciChartSurface.YAxis>
<sc:NumericAxis AxisTitle="PSD" MaxAutoTicks="5" DrawMinorGridLines="False" AutoRange="{Binding AutoScale}" VisibleRange="{Binding YVisibleRange}">
</sc:NumericAxis>
</sc:SciChartSurface.YAxis>

and in my viewmodel, I have:

    public int Maximum
    {
        get { return _maximum; }
        set
        {
            _maximum = value;
            NotifyOfPropertyChange(() => Maximum);
            YVisibleRange.Max = _maximum;
        }
    }


    public int Minimum
    {
        get { return _minimum; }
        set
        {
            _minimum = value;
            NotifyOfPropertyChange(() => Minimum);
            YVisibleRange.Min = _minimum;
        }
    }

    public DoubleRange YVisibleRange
    {
        get { return _visibleRange; }
        set
        {
            _visibleRange = value;
            NotifyOfPropertyChange(() => YVisibleRange);
        }
    }


    public void ToggleAutoScale()
    {
        AutoScale = !AutoScale;
    }

    public bool AutoScale
    {
        get { return _autoScale; }
        set
        {
            _autoScale = value;
            NotifyOfPropertyChange(() => AutoScale);
        }
    }

The auto scale functionality always works. However, only when I have not used auto scale at all, does the minimum maximum stuff work.

I would like for auto scale to completely control the graph when it’s on, and when it’s off, minimum/maximum should control the range of the graph. How do I achieve this?

In a scenario where two numeric axis (X, Y) both have IsCenterAxis set to true, is it then possible to force MouseWheelZoomModifier to use center point of current view when zooming, rather than using mouse point as center point when zooming ?

Here my code, i try to draw a chart with candle stick and horizontal line with real time data update, but HorizontalLineAnnotation never show, here my code:
final CategoryDateAxis xAxis = sciChartBuilder.newCategoryDateAxis()
.withGrowBy(0, 0.01)
.withVisibleRange(80, 102)
.build();
NumericAxis yAxis = sciChartBuilder.newNumericAxis()
.withAxisId(PRICES)
.withTextFormatting(“0.00”)
.withAutoRangeMode(AutoRange.Always)
.build();

    Collections.addAll(surface.getXAxes(), xAxis);
    Collections.addAll(surface.getYAxes(), yAxis);

               FastCandlestickRenderableSeries rSeries =  sciChartBuilder.newCandlestickSeries().withDataSeries(stockPrices).withYAxisId(PRICES)
                       .build();

                HorizontalLineAnnotation horizontalLine = sciChartBuilder.newHorizontalLineAnnotation()
                        .withPosition(5d, 3.2d) // i have try to change this but wont work
                        .withStroke(2, ColorUtil.Orange)
                        .withHorizontalGravity(Gravity.RIGHT)
                        .withIsEditable(true)
                        .build();
    ohlcAxisMarker = sciChartBuilder.newAxisMarkerAnnotation().withY1(1d).withBackgroundColor(0xFF33DD33).withYAxisId(PRICES).build();

                UpdateSuspender.using(surface, new Runnable() {
                    @Override
                    public void run() {
                        Collections.addAll(surface.getAnnotations(), ohlcAxisMarker, horizontalLine);
                        Collections.addAll(surface.getRenderableSeries(), rSeries);
                        Collections.addAll(surface.getChartModifiers(), sciChartBuilder.newModifierGroupWithDefaultModifiers().build());
                    }
                });

Corresponding Order ID: ABTSOFT-2145

We’ve bought one license for our company and some ex-coworkers have activate the license in the same computer[hardware] but with different Windows operating systems for testing.

Now those Windows systems have been covered by a new one. The problem is: we have not deactivate scichart used in the old windows systems. Now we cannot activate scichart in the current used windows system. Could anyone help to reset the activation status of our license?

https://drive.google.com/file/d/1fRXATnHhb4aGFQeQAqXN5cHnr0UQKt7Y/view?usp=sharing

Someone recently asked the question on priority support tickets

Q: How do I have two YAxis on the left and right of the chart but with
the same VisibleRange?

e.g. how to mirror the YAxis on both sides of the chart

We are replicating the answer below for benefit of our userbase:

Hello,

I am using mountain chart to draw some data. First time open the chart screen, the graph plots properly. If we do scroll forward the graph x-axis last label is missing. If we do scroll backward the graph x-axis first label is missing.

Here I have attached working .swift file.

Note: We are using mountain chart with multiple line series. We are not using stacked mountain chart.

Hi,
Currently i need to generate a report with sciChart surface printed on it. is it possible to call sciChart surface in Crystal Report to getdata Printed as i am looking for customized report. i have printed sciChart using following code
var dialog = new PrintDialog();
if (dialog.ShowDialog() == true)
{
dialog.PrintVisual(sciChart , “Chart”);
}
thanx regards
Sushant

My application is support .Net framework3.5. I only use 2D chart. Can i get SCIChart DLLs for support .Net Framework3.5 after i purchase licenses?

Hi,

I’m building a heatmap with UniformHeatmapRenderableSeries I would like to know if it is possible to get some text inside each block.
I would like to display the block size when I zoom in like this https://www.scichart.com/example/android-heatmap-chart-with-text-example/.
Do you have any suggestions?

Best Regards,
Gabriel

I can’t seem to find it in the API, but I figured I’d ask .Is any built in support for live editing the Chart Title or Axis Titles right on the chart surface like you can with a TextAnnotation?

Hello,

Just curious. Is there a maximum amount of Y-Axes that can be shown on a graph?

Hi again.

For time to time we get into a situation where the entire GUI freezes. When investigating the application dump, the freeze is found to be located in the constructor of BitmapContext, or rather inside a .Net-method called as a result of the constructor. The area of interest seems to be the use of the BackBuffer property of WriteableBitmap. This in turn ends up waiting for an event inside AcquireBackBuffer (the ManualResetEvent variable is called _copyCompletedEvent). On MSDN Microsoft states that one should call the Lock- and Unlock-methods when updating the back buffer ( http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.writeablebitmap.backbuffer(v=vs.110).aspx). I seems like this is not always the case in the SciChart source code, but I’m unable to determine if this can cause the lock.

Call stack:
mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) + 0x2b bytes
mscorlib.dll!System.Threading.WaitHandle.WaitOne(System.TimeSpan timeout, bool exitContext) + 0x6e bytes
PresentationCore.dll!System.Windows.Media.Imaging.WriteableBitmap.AcquireBackBuffer(System.TimeSpan timeout, bool waitForCopy) + 0x37 bytes
> PresentationCore.dll!System.Windows.Media.Imaging.WriteableBitmap.TryLock(System.Windows.Duration timeout) + 0x10c bytes
Abt.Controls.SciChart.Wpf.2.2.dll!System.Windows.Media.Imaging.BitmapContext.BitmapContext(System.Windows.Media.Imaging.WriteableBitmap c1505829363987065354c2524c41152e4) + 0xa6 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!A.c6e54b260f3e614b850e733a2116b4878.c6e54b260f3e614b850e733a2116b4878(System.Windows.Controls.Image c9f773d96fd8c18abf23cfdb63f49fe85, System.Windows.Media.Imaging.WriteableBitmap ce748be01e2f961df40736b3a402f6c8a, Abt.Controls.SciChart.Rendering.Common.SizeF cacf0a4a95d1143f0c11e20d4508e7132, A.c1712c9b21919ce890684525c1002f4a7 c10fe853bbcfc02fab8756c021ff9007b) + 0xb7 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!A.ccd89db9dd1768b91d35b2d2bb15f2f07.cb398c793fba70ab574d5eb126a856bcf(System.Windows.Media.Imaging.WriteableBitmap c1505829363987065354c2524c41152e4, System.Windows.Controls.Image c9f773d96fd8c18abf23cfdb63f49fe85, A.c1712c9b21919ce890684525c1002f4a7 c10fe853bbcfc02fab8756c021ff9007b) + 0x61 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!Abt.Controls.SciChart.Visuals.Axes.AxisBase.OnDraw(Abt.Controls.SciChart.Rendering.Common.IRenderContext2D renderContext, Abt.Controls.SciChart.Visuals.RenderableSeries.IRenderPassData renderPassData) + 0x82 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!A.cda144392e546b245ef5bb1ee71f22b3a.c6a7d2b5be124728330bbf562594a9bb9(Abt.Controls.SciChart.Visuals.ISciChartSurface c17037e8328cd0abc02d2a6957dfa450c, Abt.Controls.SciChart.RenderPassInfo c16b8d70d2b6ecad8f9fca7ac3f5177b8, Abt.Controls.SciChart.Rendering.Common.IRenderContext2D c41db0419b661c8ac05a2aa6a1ea66092) + 0x66 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!A.cda144392e546b245ef5bb1ee71f22b3a.RenderLoop(Abt.Controls.SciChart.Rendering.Common.IRenderContext2D renderContext) + 0x155 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!Abt.Controls.SciChart.Visuals.SciChartSurface.ca065c0b671221e0e603d0e9bf2792494() + 0x3e bytes
Abt.Controls.SciChart.Wpf.2.2.dll!Abt.Controls.SciChart.Visuals.SciChartSurface.cc0485eb45a8d4f00283729754056deb8() + 0x3e bytes
Abt.Controls.SciChart.Wpf.2.2.dll!Abt.Controls.SciChart.Visuals.SciChartSurface.OnRenderSurfaceDraw(object sender, Abt.Controls.SciChart.Rendering.Common.DrawEventArgs e) + 0x84 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!Abt.Controls.SciChart.Rendering.Common.RenderSurfaceBase.OnDraw() + 0x92 bytes
Abt.Controls.SciChart.Wpf.2.2.dll!Abt.Controls.SciChart.Rendering.Common.RenderSurfaceBase.OnCompositionTargetRendering(object sender, System.EventArgs e) + 0x1c bytes

Have you had any experience with this?

Best regards,
Bjørn Terje Svennes

Hello!
I want to create a View with two graphs, where the two graphs provide an overview. By clicking (acitvating) one of it, it “jumps” into the main view and can than be zoomed get some tooltips. I found out, that the Dashboard examples provide me the solution, but as I am relatively at the beginning with WPF, they are a bit to complex for me. I also have the problem that I cannot Export a running solution. The *.sln is missing.

Maybe anyone can provide me an simple example, the issue is not to look good, just having an idea would be nice. Notice: I (hopefully) got, that the graphs are provided in a ListBox which then is binded, but everything behind this is not clear to me.

Thanks for help!

I am using the LegendModifier to bind my RenderableSeries to my legend.

In my legends Datatemplate, I have a checkbox and a colour picker.

I notice the LegendData object is of ChartDataObjectBase type. I would like to group my data in my legend (eg, with a label), rather than just display the list.

Is this possible, similar to the images attached ?

I’m migrating from v3.1, and it seems that in a later version you’ve changed the default appearance of the rollover modifier tooltip container, to be a green rectangle with a dark drop shadow (which looks awful sorry!). I’ve created an “empty” container style to remove this, but it looks like I have to apply this to every renderable series, using “s:RolloverModifier.TooltipContainerStyle=…”.
I look after a large application with dozens of charting controls, not only in XAML but also created programmatically, so this approach to applying the container style is making life fairly difficult! Is there any way to globally apply this container style to all renderable series types? I’ve tried applying it to BaseRenderableSeries but it doesn’t work:

    <Style TargetType="{x:Type s:BaseRenderableSeries}">
        <Setter Property="s:RolloverModifier.TooltipContainerStyle"
                Value="{StaticResource RolloverTooltipContainerStyle}" />
    </Style>

(It does work if I use a concrete TargetType such as FastLineRenderableSeries, but this would mean creating a style for every type of renderable series used across the application).

Similarly, the rollover “point marker” now has a drop shadow. Is there a way to globally remove the drop shadow, but ensure that the ellipse continues to be coloured to match the series stroke colour?

Hello all,

our application is recording data points from a measurement device. The recorded data points are shown in a 2D and 3D chart. Both charts are within one page, the user can switch between the charts via TabControl.

The problem we have is, that when a new data point is added, the chart, which is not in focus (so not selected by the TabControl) does not update.
For the 2D chart we could solve this issue by executing the following code on the TabControl selection changed event:

this.ViewportManager.BeginInvoke(() => { this.ViewportManager.ZoomExtents(); });

For the 3D chart we tried the same approach with the following code (also exectue on the TabControl selection changed event), the function ScaleWorldDimensions adjust the 3D space based on the recorded data:

   Application.Current.Dispatcher.Invoke(() =>
        {
            if (this.ListDataPoints.Count > 0)
            {
                this.ScaleWorldDimensions(this.ListDataPoints);
                this.Surface3D.ViewportManager.ZoomExtents();
            }
        });

But unfortunately this does not solve the issue. Therfore the user either has to switch the tab again or add a new data point when the 3D chart is selected.

Do have hints on how to solve this issue?

Thanks for your support in advanced, in case you need furhter information please let me know.

Dear SCICharts support:
We have a very large project that must be migrated to version 3 because right it uses version 2.
I am stuck in the following issues:

1/ I cannot convert Double or Date to ISCIComparable.

Our x axis contains Date-timestamp values and I am trying to find the index of the dataseries.xValues of a specific Date having as parameter my Date value which is Date type and not ISCIComparable.
How can I do this ?

When I try my attempt 1:

let x: Double = <DoubleValue>
let index = dataSeries.xValues.findIndex(of: x, searchMode: .nearest, isSorted: true) 

I am getting the build error: “Cannot convert value of type ‘Date?’ to expected argument type ‘ISCIComparable?'”

When I try my attempt 2:

If I also try to iterate the xValues and find the ISCIComparable value which has doubleValue equal the x then I get the error “Type ‘ISCIList?’ does not conform to protocol ‘Sequence'”
I mean something like this:

let x: Date = Date()
var comparableValue: ISCIComparable? = nil
for val in dataSeries.xValues {
    if val.toDate() == x {
        comparableValue = val
    }
}

So any solution please ?

2/ I am trying to update the last point of dataSeries using this code:

let lastPoint = dataSeries.count - 1
if let open = dataSeries.openValues.value(at: lastPoint) {
        dataSeries.update( open: open,
                                    high: max(dataSeries.highValues().value(at: lastPoint).toDouble(), mbidPrice),
                                    low: min(dataSeries.lowValues().value(at: lastPoint).toDouble(), mbidPrice),
                                    close: mbidPrice,
                                    at: lastPoint)     }

and I get the error “Cannot convert value of type ‘ISCIComparable’ to expected argument type ‘ISCIValues?’ “
Why ? How should I do this ?

Thanks a lot in advance

Dear SciChart Team:

I want to have two vertical lines on the graph and get the spacing of the two lines as the mouse moves,
as shown in the attached picture.

Can you provide a simple example showing the architecture of this feature?

thank you for answer !

Additional questions
image is attached

q1. last data only marker
q2. vertical dotted line (with rolloverModifier)

Hi I am trying to create a vertical line annotation with MVVM annotationsbinding – this is due to having a chart group with 2 SciChartSurfaces sharing one X axis.

I have added a VerticalLineAnnotationViewModel to my

ObservableCollection Annotations

I would like the user to be able to create a vertical line with two labels, one with the X1 position and the other with some custom text.

I have tried adding an ObservableCollection AnnotationLabels to the VerticalLineAnnotationViewModel during instantiation however they don’t seem to appear.

As an alternative I tried a CustomAnnotation called CustomVerticalLine which inherited CustomAnnotation and then created a CustomVerticalLineViewModel which inherited CustomAnnotationViewModel and then overrode the ViewType to CustomVerticalLine. This displayed the two labels but then I couldn’t bind to the X1 value or the text property.

What am I doing wrongly, could anyone help please?

Thanks

For example, to draw a first part of a Line green and the second white? Or do you need multiple dataseries for that?

Especially I nee some areas of the line where there should be a “gap”, which could be done with multiple lines or (maybe easier from this totally beginner point of view) with one line, where some parts (the gaps) get black color.

I think, I will need multiple lines for that, but I wanted to be sure…

Thanks in advance.

I want to visualize Contour in my application and set the Contour Interval.
But the visualization is not as the expected value.
From your Example application: 3D Charts > Create A Surface Mesh Chart > Surface Mesh 3D With Contours. (Screenshot in attachment)
I have set the Contour Interval property slider to the maximum value (30).
But the result is less than 20, about 10.

How to make the Interval 30, and the visualization is really 30?
Are there any interval scaling property?

Hi,

I’m trying to export my graphs using the XamlRenderSurface and the ExportToXPS extension function.

I can export a BitmapImage from it fine but the xps image only has the Axis lines and a vertical annotation on it. See images for comparison.

Also, it outright crashes in some other graphs I have on Get MinorDelta because of a null reference exception, no additional info is given out by DebugWhySciCharDoesntRender = true. Likewise in this case, I can export to bitmap just fine. I am using custom tick providers.

I should also note that I’m rendering the charts from memory they’re not visually displayed when export them.

I believe there’s a typo in the code tab for the view model:
We have:
if (XVisibleRange.Max > ds0.Count)
{
var existingRange = _xVisibleRange;
var newRange = new IndexRange(existingRange.Min + 1, existingRange.Max + 1);
XVisibleRange = newRange;
}
but clearly the min value should not change (at least no here) since as result the real time values will not be in the visisble region. It might be an idea to update the sample code.
cheers
Claes

My application intermittently output the following exception log:

System.InvalidOperationException: Enumerator version is invalid
Location: hbq`1.ghm.uqc()

InvalidOperationException could be thrown when a collection is modified while iterating of IEnumerable collection

However, it usually outputs the following exception message:
“Collection was modified; enumeration operation may not execute.”
(NOT is “Enumerator version is invalid”)

When and under what conditions can this exceptions occur?

When an exception occurs, the call stack is as follows:

SciChart.Data.dll!hbq.ghm.uqc()
SciChart.Data.dll!hbq.ghm.MoveNext()
System.Core.dll!System.Linq.Enumerable.Any(System.Collections.Generic.IEnumerable source)
SciChart.Charting.dll!SciChart.Charting.Model.DataSeries.DataSeries<double, double>.GetIndicesRange(SciChart.Data.Model.IRange range, SciChart.Charting.Common.Extensions.SearchMode downSearchMode, SciChart.Charting.Common.Extensions.SearchMode upSearchMode)
SciChart.Charting.dll!SciChart.Charting.ChartModifiers.SeriesValueModifier.kly(SciChart.Charting.Visuals.RenderableSeries.IRenderableSeries gsv)
SciChart.Charting.dll!SciChart.Charting.ChartModifiers.SeriesValueModifier.OnParentSurfaceRendered(SciChart.Charting.Utility.SciChartRenderedMessage e)
SciChart.Core.dll!TinyMessenger.TinyMessengerHub.ptc<SciChart.Charting.Utility.SciChartRenderedMessage>.Deliver(TinyMessenger.ITinyMessage message)
SciChart.Core.dll!TinyMessenger.DefaultTinyMessageProxy.Deliver(TinyMessenger.ITinyMessage message, TinyMessenger.ITinyMessageSubscription subscription)
SciChart.Core.dll!TinyMessenger.TinyMessengerHub.ptg<SciChart.Charting.Utility.SciChartRenderedMessage>.hyi(TinyMessenger.TinyMessengerHub.ptd ayb)
mscorlib.dll!System.Collections.Generic.List<TinyMessenger.TinyMessengerHub.ptd>.ForEach(System.Action<TinyMessenger.TinyMessengerHub.ptd> action)
SciChart.Core.dll!TinyMessenger.TinyMessengerHub.fbs<SciChart.Charting.Utility.SciChartRenderedMessage>(SciChart.Charting.Utility.SciChartRenderedMessage axj)
SciChart.Core.dll!TinyMessenger.TinyMessengerHub.Publish<SciChart.Charting.Utility.SciChartRenderedMessage>(SciChart.Charting.Utility.SciChartRenderedMessage message)
SciChart.Charting.dll!sjd.urk(SciChart.Charting.Visuals.ISciChartSurface ccg, SciChart.Charting.Services.RenderPassInfo cch, SciChart.Drawing.Common.IRenderContext2D cci)
SciChart.Charting.dll!sjd.RenderLoop(SciChart.Drawing.Common.IRenderContext2D renderContext)
SciChart.Charting.dll!SciChart.Charting.Visuals.SciChartSurface.DoDrawingLoop()
SciChart.Charting.dll!SciChart.Charting.Visuals.SciChartSurface.hjp()
SciChart.Core.dll!SciChart.Core.Utility.CompositionSyncedDelegate.otw(object bdd, object bde)