Category: Android

Hello,

As you have already the examples of the EEG -50 channel, Is it possible to set the sensitivity factor for the channels to show the graph.
Basically, this will set the amplitude based on the frequency variation example 7micro volts/millimeter (7microvolts/mm) for each channel. Is there any way we can do it using Scichart, please let us know.

Appreciate your help

Regards,
Aditya

Hi
Is there a way to just change the values of the pie segments so it get updated on the donut chart.
If I remove and add the pie segments again it works, is this the correct way?

Also I can’t find any documentation around the donut for android/xamarin

regards
Per

Hi !
Is it possible to display the RollOverModifier tooltip on the real points only ? Say I have points (1 1) and (3 3) in my chart and I don’t wan’t the tooltip to display (1.5 1.5), (2 2), (2.5 2.5) etc. when rolling over… Any idea ?

Thank you,

Adrien

I would like to add scroll listener on x axis title. Is it possible to add scroll to axis title

Hi,
I am using Scichart android ,for Linking Chart Modifiers of Multiple charts I use these lines of code as shown below but it will not synchronize charts on X axis properley sometimes what is the reason ?
Is there is any other method to do that?

ModifierGroup chartModifiers2 = sciChartBuilder.newModifierGroup()
// Setting MotionEventsGroup
.withMotionEventsGroup(“SharedMotionEvents”).withReceiveHandledEvents(true)
.withLegendModifier().withShowCheckBoxes(true).withReceiveHandledEvents(true).build()
.withZoomPanModifier().withClipModeX(ClipMode.ClipAtExtents).withReceiveHandledEvents(true).build()
.withPinchZoomModifier().withReceiveHandledEvents(true).build()
.withZoomExtentsModifier().withReceiveHandledEvents(true).build()
.withRolloverModifier().withReceiveHandledEvents(true).build()
.build();

I have CategoryDateAxis and whant to setup range limit from series size – 50 to series size + 10

mBottomAxis.setVisibleRangeLimit(new DoubleRange(series.size() - 50d, series.size() + 10d));
mBottomAxis.setVisibleRangeLimitMode(RangeClipMode.MinMax);

And this code works but not as I expected
When I scrol chalt and hits the range limit scroll is stopped BUT chart is zooming in

How to disable zooming when I hits the limit?

Can you help me please!
I was searching forum and see all different questions with dfferent ansvers but no one help for me.

I’m using CategoryDateAxis and whant to show to users vertical lines between days, weeks or month
Its depends from timestamp and visible period.
I need to opportunity to provide themself when to display vertical line.

In chart I display CandlestickSeries from stosk market and users whant to know when one day is ended and new day is begin.

How can I do that?

I am still experiencing the effects of this defect despite using v2.5.0.2598 of the Android libraries. Can someone please explain to me how to circumvent this behavior? It seems silly to require a base series that is ultimately going to be replaced by real-time updates.

Cheers

Hi,
We want to use scichart for ios-android and wpf platforms to use in our applications developed by our company for Financial (Trading) purposes. In our review, we found that we can use Linear Trendline for wpf platform in your documents. However, there was no documentation for the android and ios platforms. Since Linear Trendline is of great importance for trading, it is important to know whether this feature is available or if it will be developed as a new feature by you. I would ask you to provide information on the subject.

Hi, I’ve been working on recyclerview with scichart.The problem i’m facing is that sometimes,when you come back from other screens the charts is not loading eventhough the other data in the list are showing.The list is placed inside a view pager .This issue is not consistant sometimes it shows the graph sometimes it won’t .The exception i’m getting are

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child’s parent first.
at android.view.ViewGroup.addViewInner(ViewGroup.java:5260)
at android.view.ViewGroup.addView(ViewGroup.java:5089)

2021-08-17 14:50:52.639 15073-29533/com.fascilityconnex.voicemobile E/SciChart Rendering Errors: SciChartSurface has no XAxes. Please ensure SciChartSurface.XAxis is set, or SciChartSurface.XAxes has at least one axis
2021-08-17 14:50:52.641 15073-29531/com.fascilityconnex.voicemobile E/Exception: null
java.lang.UnsupportedOperationException: AxisCollection.getAxisById(‘DefaultAxisId’) returned more than one axis with the ID=DefaultAxisId. Please check you have assigned correct axis Ids when you have multiple axes in SciChart
at com.scichart.charting.model.AxisCollection.getAxisById(SourceFile:10)

hi

any plans to support xamarin forms in the future.

Hello,

I am wanting to “force” an axis label on a specific value. For example, right now in my datetime graph it always shows a “5PM” time on the axis regardless of the data. Instead, I would like to “anchor” the axis ticks on a different time value, like local Noon. We were able to do this in our previous charting solution, but I have not yet figured out how to do it with SciChart.

Thank you.

In my implementation I have the xAxis using a DateAxis in the dataset I am using there is only one data point.

The RolloverModifier is very sensitive it is very hard to highlight that one point.

RolloverModifier rolloverModifier = new VitalChartRolloverModifier();
rolloverModifier.setSourceMode(SourceMode.AllVisibleSeries);
rolloverModifier.setDrawVerticalLine(true);
rolloverModifier.setShowTooltip(true);
rolloverModifier.setShowAxisLabels(false);
rolloverModifier.setIsEnabled(true);
rolloverModifier.setUseInterpolation(false);

Is there a way of making it less sensitive?

Hi

I have added 24 Line graphs for EEG. Now I want to display the name of each channels against each graph. I am using Y steeped graph which you are using for Vital signs display in example code. Can you please let me know how to t to display the name of each channels against each graph

Best Regards,
Aditya

Today is my first day using SciChart and I’m following along with this hello world demo –

https://www.scichart.com/documentation/android/v2.x/webframe.html#Tutorial%2002%20-%20Creating%20a%20Chart.html

For some reason Android Studio won’t recognize ‘SciChartBuilder.init(this)’. Am I missing a file? I can create an instance of SciChartSurface with no problem but the builder line is a no-go. I have imported and referenced the 4 correct .aar files in my gradle.build file so I’m not sure what else I’d be missing. Any help for a newbie would be appreciated!!

Hi All
By default legends are being draw on scichart surface. I want to draw them outside the scichart surface because as the number of render-able series increase legends hides them. Please give me suggestion how do i do it ?

When I open the activity with the chart , I see a black screen. And there is no graph displayed.
I have a trial license key which is valid.

Here is my full code:
xml file:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/chart_layout"
android:orientation="vertical">

Activity:

public class ECGMonitorFragment extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    try {
        com.scichart.charting.visuals.SciChartSurface.setRuntimeLicenseKey("");
    } catch(Exception e){

        Log.e("SciChart", "Error while accesing the license", e);
    }


    setContentView(R.layout.activity_ecgmonitor_fragment);



    // Create a SciChartSurface
    final SciChartSurface surface = new SciChartSurface(this);

    // Get a layout declared in "activity_main.xml" by id
    LinearLayout chartLayout = (LinearLayout) findViewById(R.id.chart_layout);

    // Add the SciChartSurface to the layout
    chartLayout.addView(surface);

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

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

    // Create a numeric X axis
    final IAxis xAxis = sciChartBuilder.newNumericAxis()
            .withAxisTitle("X Axis Title")
            .withVisibleRange(-5, 15)
            .build();

    // Added in Tutorial #8 - two Y axes
    // Create a numeric axis, right-aligned
    final IAxis yAxisRight = sciChartBuilder.newNumericAxis()
            .withAxisTitle("Primary")
            // Assign a unique ID to the axis
            .withAxisId("primaryYAxis")
            .withAxisAlignment(AxisAlignment.Right)
            .build();

    // Create another numeric axis, left-aligned
    final IAxis yAxisLeft = sciChartBuilder.newNumericAxis()
            .withAxisTitle("Secondary")
            // Assign a unique ID to the axis
            .withAxisId("secondaryYAxis")
            .withAxisAlignment(AxisAlignment.Left)
            .withGrowBy(0.2,0.2)
            .build();

    // Add both Y axes to the YAxes collection of the surface
    Collections.addAll(surface.getYAxes(), yAxisLeft, yAxisRight);

    // Added in Tutorial #3
    // Add a bunch of interaction modifiers to a ModifierGroup
    ModifierGroup chartModifiers = sciChartBuilder.newModifierGroup()
            // Setting MotionEventsGroup
            .withMotionEventsGroup("SharedMotionEvents").withReceiveHandledEvents(true)
            .withPinchZoomModifier().build()
            .withZoomPanModifier().withReceiveHandledEvents(true).build()
            .withZoomExtentsModifier().withReceiveHandledEvents(true).build()
            .withXAxisDragModifier().withReceiveHandledEvents(true).withDragMode(AxisDragModifierBase.AxisDragMode.Scale).withClipModeX(ClipMode.None).build()
            .withYAxisDragModifier().withReceiveHandledEvents(true).withDragMode(AxisDragModifierBase.AxisDragMode.Pan).build()
            .build();

    // Add the X axis to the XAxes collection of the surface
    Collections.addAll(surface.getXAxes(), xAxis);

    // Add the interactions to the ChartModifiers collection of the surface
    Collections.addAll(surface.getChartModifiers(), chartModifiers);

    // Added in Tutorial #6 - FIFO (scrolling) series
    // Create a couple of DataSeries for numeric (Int, Double) data
    // Set FIFO capacity to 500 on DataSeries
    final int fifoCapacity = 500;

    final XyDataSeries lineData = sciChartBuilder.newXyDataSeries(Integer.class, Double.class)
            .withFifoCapacity(fifoCapacity)
            .build();
    final XyDataSeries scatterData = sciChartBuilder.newXyDataSeries(Integer.class, Double.class)
            .withFifoCapacity(fifoCapacity)
            .build();

    // Create and configure a line series
    final IRenderableSeries lineSeries = sciChartBuilder.newLineSeries()
            .withDataSeries(lineData)
            // Register on a particular Y axis using its ID
            .withYAxisId("primaryYAxis")
            .withStrokeStyle(ColorUtil.LightBlue, 2f, true)
            .build();

    // Create an Ellipse PointMarker for the Scatter Series
    EllipsePointMarker pointMarker = sciChartBuilder
            .newPointMarker(new EllipsePointMarker())
            .withFill(ColorUtil.LightBlue)
            .withStroke(ColorUtil.Green, 2f)
            .withSize(10)
            .build();

    // Create and configure a scatter series
    final IRenderableSeries scatterSeries = sciChartBuilder.newScatterSeries()
            .withDataSeries(scatterData)
            // Register on a particular Y axis using its ID
            .withYAxisId("primaryYAxis")
            .withPointMarker(pointMarker)
            .build();

    // Add a RenderableSeries onto the SciChartSurface
    surface.getRenderableSeries().add(scatterSeries);
    surface.getRenderableSeries().add(lineSeries);
    surface.zoomExtents();

    // Added in Tutorial #5
    // Create a LegendModifier and configure a chart legend
    ModifierGroup legendModifier = sciChartBuilder.newModifierGroup()
            .withLegendModifier()
            .withOrientation(Orientation.HORIZONTAL)
            .withPosition(Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM, 10)
            .build()
            .build();

    // Add the LegendModifier to the SciChartSurface
    surface.getChartModifiers().add(legendModifier);

    // Create and configure a CursorModifier
    ModifierGroup cursorModifier = sciChartBuilder.newModifierGroup()
            // Setting MotionEventsGroup
            .withMotionEventsGroup("SharedMotionEvents").withReceiveHandledEvents(true)
            .withCursorModifier().withShowTooltip(true).build()
            .build();

    // Add the CursorModifier to the SciChartSurface
    surface.getChartModifiers().add(cursorModifier);

    // Added in Tutorial #9 - one more SciChartSurface
    final SciChartSurface surface2 = new SciChartSurface(this);

    // Add the SciChartSurface to the layout
    chartLayout.addView(surface2);

    // Set layout parameters for both surfaces
    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT, 1.0f);
    surface.setLayoutParams(layoutParams);
    surface2.setLayoutParams(layoutParams);

    // Create a numeric X axis
    final IAxis xAxis2 = sciChartBuilder.newNumericAxis()
            .withAxisTitle("X Axis Title")
            .withVisibleRange(-5, 15)
            .build();

    // Create a numeric axis
    final IAxis yAxisRight2 = sciChartBuilder.newNumericAxis()
            .withAxisTitle("Primary")
            .withAxisId("primaryYAxis")
            .withAxisAlignment(AxisAlignment.Right)
            .build();

    // Create another numeric axis
    final IAxis yAxisLeft2 = sciChartBuilder.newNumericAxis()
            .withAxisTitle("Secondary")
            .withAxisId("secondaryYAxis")
            .withAxisAlignment(AxisAlignment.Left)
            .withGrowBy(0.2, 0.2)
            .build();

    // Add the Y axis to the YAxes collection of the surface
    Collections.addAll(surface2.getYAxes(), yAxisLeft2, yAxisRight2);

    // Add the X axis to the XAxes collection of the surface
    Collections.addAll(surface2.getXAxes(), xAxis2);

    // Create and configure an area series
    final IRenderableSeries areaSeries = sciChartBuilder.newMountainSeries()
            .withDataSeries(scatterData)
            .withYAxisId("primaryYAxis")
            .withStrokeStyle(ColorUtil.LightBlue, 2f, true)
            .withAreaFillColor(ColorUtil.argb(ColorUtil.LightSteelBlue, 0.6f))
            .build();

    // Add the area series to the RenderableSeries collection of the surface
    Collections.addAll(surface2.getRenderableSeries(), areaSeries);

    // Create the second collection of chart modifiers
    ModifierGroup chartModifiers2 = sciChartBuilder.newModifierGroup()
            // Setting MotionEventsGroup
            .withMotionEventsGroup("SharedMotionEvents").withReceiveHandledEvents(true)
            .withZoomExtentsModifier().withReceiveHandledEvents(true).build()
            .withZoomPanModifier().withReceiveHandledEvents(true).build()
            .withPinchZoomModifier().withReceiveHandledEvents(true).build()
            .withCursorModifier().withReceiveHandledEvents(true).build()
            .build();

    // Add the interactions to the ChartModifiers collection of the surface
    Collections.addAll(surface2.getChartModifiers(), chartModifiers2);

    TimerTask updateDataTask = new TimerTask() {
        private int x = 0;

        @Override
        public void run() {
            UpdateSuspender.using(surface, new Runnable() {
                @Override
                public void run() {
                    lineData.append(x, Math.sin(x * 0.1));
                    scatterData.append(x, Math.cos(x * 0.1));

                    // Added in Tutorial #7
                    // Add an annotation every 100 data points
                    if(x%100 == 0) {
                        TextAnnotation marker = sciChartBuilder.newTextAnnotation()
                                // Register on a particular Y axis using its ID
                                .withYAxisId("primaryYAxis")
                                .withIsEditable(false)
                                .withText("N")
                                .withBackgroundColor(ColorUtil.Green)
                                .withX1(x)
                                .withY1(0.0)
                                .withVerticalAnchorPoint(VerticalAnchorPoint.Center)
                                .withHorizontalAnchorPoint(HorizontalAnchorPoint.Center)
                                .withFontStyle(20, ColorUtil.White)
                                .withZIndex(1)
                                .build();

                        surface.getAnnotations().add(marker);

                        // Remove one annotation from the beginning
                        // in the FIFO way
                        if(x > fifoCapacity){
                            surface.getAnnotations().remove(0);
                        }
                    }

                    // Zoom series to fit the viewport
                    surface.zoomExtents();
                    surface2.zoomExtents();
                    ++x;
                }
            });
        }
    };

    Timer timer = new Timer();

    long delay = 0;
    long interval = 10;
    timer.schedule(updateDataTask, delay, interval);

}

}

I have a basic StackedColumnRenderableSeries using a HorizontallyStackedColumnCollection, which has 2 DataSeries in it. The chart renders fine, and for each point on the x axis, I see the 2 bars. However, the labels on the x Axis are left aligned (relative to the bars). How do I get the labels to be centered under the bars? See the image below for reference. Note how the labels appear left aligned under the yellow bars… I’d like them to be center aligned, in the middle of the yellow and blue bars.

Hello there. At the beginning of the program, I define the workspace as w=10 and h=10 units. I set the new workspace to 5×5 in a button event. The new workspace is created but the old 10×10 volume remains on the screen. When I create the new workspace I want the old one to disappear. Thank you in advance for your help. Good work.

My button event.

btnSetNewWH.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
w = 5;
h = 5;
ds3d = new UniformGridDataSeries3D<>(Double.class, Double.class, Double.class, w, h);      

rs1 = sciChart3DBuilder.newSurfaceMeshSeries3D()
        .withDataSeries(ds3d)               
        .withDrawMeshAs(DrawMeshAs.SolidWireframe)
        .withStroke(0xFFE0E0E0)
        .withStrokeThicknes(1f)
        .withMaximum(5000)
        .withDrawSkirt(false)
        .withMeshColorPalette(new GradientColorPalette(colors, stops))
        .withOpacity(1.0f)
        .build();

surface3d.setTheme(R.style.SciChart_ElectricStyle);
surface3d.setCamera(camera);
surface3d.setXAxis(xAxis);
surface3d.setYAxis(yAxis);
surface3d.setIsFpsCounterVisible(false);
surface3d.setZAxis(zAxis);
surface3d.getRenderableSeries().add(rs1);
surface3d.getChartModifiers().add(sciChart3DBuilder.newModifierGroupWithDefaultModifiers().build());
    }
});

Hello Friends ,

   Sync two Chart in Android Bottom chart can be change on top chart touch

We are looking a solution where we want show two chart at Top and Bottom in Android Screen.based on Top chart changed by gesture /finger touch should be expend/shrink like zoom in and out bottom chart

Assume at top chart data range has between 0 to 3,00,000 , I want to capture in bottom chart only selected/touched part in with expanded form.

I have attached below screen shot which may be helpful.

Solution can be like this but not able to get code for this implementation

https://blog.scichart.com/content/images/2021/06/Navigate-ECG-strip-with-Pocket-ECM.gif

https://blog.scichart.com/android-app-to-view-long-term-ecg-signals/

I appreciate any help regarding this issue.

Hi,
I downloaded your Android Examples project to evaluate whether it’ll be a good fit for real time updates.
Replaced SetRunTimeLicenseKey call with my trial keys.
Designer time window displays Sorry!you have not set a LicenseKey message.
RunTime displays your trial license expired.

Any help on this would be great.

Thanks

Can Annotation in editing state set the editing style, or the background of editing state?

Hi,
How can I programmatically prevent panning, zooming, yaw, pitch movements on the screen whenever I want?

Best regards…

Hi,

I’m working on the iOS and android version. I’m trying to implemented an animated visible range change on Y axis when zooming/panning X axis.

On iOS, I just have to do:
yAxis.autoRange = .always
yAxis.animateVisibleRangeChanges = true
yAxis.animatedChangeDuration = 0.5

But I can’t find a way to do that on Android, is it hidden somewhere else?

Kind Regards,
Alexis

See the Attached image — On the right side in addition to the labels 0.01% – 20.0%; Their is a color coded chart of AAA through C/D.

I need this to also be part of the chart; or maybe a separate control that can be transformed and zoomed based on where the chart is at.

If I’m zoomed in on the 0.15% – 0.50% then the B/BB/BBB should also be zoomed in to match the current scale of the chart.

Ideas on how to handle this. I’ve tagged this question as Android, but I will also need a solution for iOS.

I have some complex data & am showing each dataset as a different colour, but I would like to be able to customise the legends.

I am interested in having 2 legends, one with each data set, showing the colour, and preferably, limited to a set number with the option to scroll, and the other showing that solid lines are the left Y axis, and the dashed lines are the right Y axis.

My question is, is there a way to apply a custom skin to the Legend & is there a way to show dashed lines instead of just a big coloured square in the legend?

Hi,

In Android MVVM architecture, I am trying to @Inject ISuspendable through ViewModelModule, as I cannot pass this to my VMModel constructor.

@Module
abstract class ViewModelModule {

    @Singleton
    @Binds
    abstract fun getSuspendable(aSuspendable: ACMSuspendableImpl): ISuspendable

@Binds
    @IntoMap
    @ViewModelKey(MonitorViewModel::class)
    abstract fun bindsMonitorViewModell(monitorViewModel: MonitorViewModel): ViewModel
}


@Singleton
class ACMSuspendableImpl @Inject constructor() : ISuspendable {


    override fun decrementSuspend() {
    }

    override fun suspendUpdates(): IUpdateSuspender {
        TODO("not implemented")
    }

    override fun getIsSuspended(): Boolean {
        TODO("not implemented")
    }

    override fun resumeUpdates(p0: IUpdateSuspender?) {
    }
}

whereas my MonitorViewModel class as,

class MonitorViewModel @Inject constructor(context: Context) : BaseViewModel()  {

    @Inject
    lateinit var acmSuspend: ISuspendable


private fun loadMonitorData() {

        UpdateSuspender.using(acmSuspend) { //<! NULL ->
            iapDataSeries.append(Timestamp.valueOf(mData100Hz.getRtcTimeStamp().toString()), mData100Hz.emr.iap)
            uoColumnDataSeries.append(
                Timestamp.valueOf(mData100Hz.getRtcTimeStamp().toString()),
                mData100Hz.emr.totalVolume
            )
      }
}

How should I @Inject ISuspendable so that it should not be NULL. Please provide me some example snipped to work.
FYI,

I tried to follow the ECGViewModel but this sample used some custom solution and there is no use of DI.

BR,

Praween

How to achieve this effect？

So I am trying to set paddings on the chart, so that the data series do not touch chart edges

I can’t do it with View’s method setPadding because then the black background is present (screenshot shows padding on all sides but I need just left and right)

Also, I managed to achieve no labels, axes, grids etc. but in totally hacky way; I set .withIsCenterAxis and then all other things to false

 .withAxisId(Y_AXIS_ID)
        .withDrawMajorBands(false)
        .withDrawMajorGridLines(false)
        .withDrawMinorGridLines(false)
        .withDrawLabels(false)
        .withIsCenterAxis(true)
        .withDrawMajorTicks(false)
        .withDrawMinorTicks(false)

Is there a normal way of doing this?

thanks

Hi,
I am using Sci Chart android I want to Share/Link Custom Modifier on Multiple Charts ,
How Can i do that?

I’m seeing the following exception:

E/Exception: null
    java.lang.ArrayIndexOutOfBoundsException: length=0; index=-1
        at com.scichart.core.model.DoubleValues.get(SourceFile:167)
        at com.scichart.charting.numerics.tickProviders.LogarithmicNumericTickProvider.updateTicks(SourceFile:94)
        at com.scichart.charting.numerics.tickProviders.TickProvider.update(SourceFile:59)
        at com.scichart.charting.numerics.tickProviders.DeltaTickProvider.update(SourceFile:81)
        at com.scichart.charting.visuals.axes.AxisBase.onUpdateMeasure(SourceFile:957)
        at com.scichart.charting.visuals.axes.AxisBase.updateAxisMeasurements(SourceFile:936)
        at com.scichart.charting.layoutManagers.RightAlignmentOuterAxisLayoutStrategy.measureAxes(SourceFile:39)
        at com.scichart.charting.layoutManagers.DefaultLayoutManager.onLayoutChart(SourceFile:235)
        at com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.a(SourceFile:207)
        at com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.a(SourceFile:132)
        at com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.onDraw(SourceFile:123)
        at com.scichart.drawing.opengl.RenderSurfaceGL$a.onDraw(SourceFile:234)
        at com.scichart.drawing.opengl.MyGLRenderer.b(SourceFile:299)
        at com.scichart.drawing.opengl.MyGLRenderer.onDrawFrame(SourceFile:283)
        at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1571)
        at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1270)

I’m initializing my chart as follows:

SciChartBuilder.init(context)
builder = SciChartBuilder.instance()

...

val xAxis = builder.newCategoryDateAxis()
                            .withGrowBy(0.0, 0.05)
                            .withAxisAlignment(AxisAlignment.Bottom)
                            .withVisibleRange(sharedXRange)
                            .withDrawMinorGridLines(true)
                            .withDrawMajorGridLines(true)
                            .build()
val yAxis = builder.newLogarithmicNumericAxis()
                            .withTextFormatting("#.#E+0")
                            .withScientificNotation(ScientificNotation.LogarithmicBase)
                            .withLogarithmicBase(2.0)
                            .build()
val seriesData = builder.newXyDataSeries(Date::class.java, Double::class.javaObjectType)
                            .withSeriesName("Series A")
                            .build()
seriesData.append(data.dateData, data.yData)
series = builder.newLineSeries()
                            .withDataSeries(seriesData)
                            .build()

UpdateSuspender.using(surface) {
                Collections.addAll(surface.xAxes, xAxis)
                Collections.addAll(surface.yAxes, yAxis)
                Collections.addAll(surface.renderableSeries, series)
}

data object has about 300 valid data points.

Any ideas what’s going on? I tried running this on a new activity. If I swap LogarithmicNumericAxis for a NumericAxis, everything works fine. I looked at the decompiled .class file where the crash was occurring (I don’t have the source for SciChart), and it seems like the crash occurs when major ticks fail to get generated (majorTicks.size == 0). I tried disabling all minor/major ticks but no joy.

for(int var22 = majorTicks.size(); var22 >= 0; --var22) {
            double var23 = var4.fromExponent(var11);
            double var25 = var22 < majorTicks.size() ? majorTicks.get(var22) : majorTicks.get(var22 - 1) * var23;