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0 votes
6 views

I’m building a custom NumericLabelProvider and need to change the label output based on the data the chart is displaying. We will be using the range of the chart to specify whether decimals display or not. How can I access the chart from my custom NumericLabelProvider?

0 votes
5 views

Is it possible to grow a UniformHeatmapDataSeries in the x direction? It only has methods to update the Z values. I have a case where X axis represents time and I need to keep adding values in X direction. Is there a way to do it besides recreating UniformHeatmapDataSeries with new values?

0 votes
23 views

Hi,
i am trying to create multiple Y Axis in my chart
1. Left side is showing Price Value, i.e. 1200, 1201…
2. Right side is showing the % change relative to certain price, i.e. 1%, 2%…
3. Both side label should be aligned so that 1200 1%, 1201 2% ….

Questions:
1. How to align the value on both Y Axis?
2. I want to assign multiple color to Y Axis, for example, blue for -ve value, red for +ve value, how to do that?

Thank you!

  • tommy ng asked 1 week ago
  • last active 5 days ago
0 votes
37 views

Hi,
I am developing a candle stick chart, with modifier newModifierGroupWithDefaultModifiers
What i want to do is
1. when user click the chart, the modifier will be changed to CursorModifier,
2. xy axis label should not disappeared when user release their finger

How could i do that?

Thank you

  • tommy ng asked 2 weeks ago
  • last active 1 week ago
0 votes
35 views

Hello,
I’m creating a chart where the x-axis are dates. I want to load more (past) data when a button is clicked or when the visible range satisfies some condition. I have been able to do that using the InsertData function with index = 0 (in order to insert in the beginning of the series), but my problem now is how to keep the position I had before inserting the new data. Right now, after the insertion, the x-axis visible range’s indexes are the same instead of being moved to the right in order to show the same part of the data as before.

I have tried different ways to modify the visible range (by moving the range taking into account the new data size) but none of them have performed well.

I would like to display the same before and after inserting the previous data, so when the user scrolls he can find more data on the left but he is shown the same range of data as before.

I’m using the CategoryDateAxis as x-axis and the NumericAxis as y-axis (you can see the configuration of those axis below). The renderable series is a FastCandlestickRenderableSeries and the data series is an OhlcDataSeries<DateTime, double>.

Btw, I’m using the Xamarin wrapper for Android.

Could you help me with this issue?

Thanks!

var yAxis = new NumericAxis(this.Context)
{
        GrowBy = new DoubleRange(0, 0.1),
        AutoRange = AutoRange.Always
};

var xAxis = new CategoryDateAxis(this.Context)
{
       GrowBy = new DoubleRange(0, 0.1),
       VisibleRange = new DoubleRange(dataCount - InitialCandlesShown, dataCount + RightCandlesMargin),
       VisibleRangeLimit = new DoubleRange(-2.0, dataCount + RightCandlesMargin),
       MinimalZoomConstrain = new Java.Lang.Double(MinimumCandlesShown)
 };
0 votes
39 views

Hi,
I want to customize the style of stick such that
1. Green and hollow stick if it is rising and open higher than close
2. Green and fill stick if it is rising and open lower than close
3. Red and hollow stick if it is falling and open higher than close
4. Red and fill stick if it is falling and open lower than close

How could i achieve that with only one candle series?

  • tommy ng asked 2 weeks ago
  • last active 2 weeks ago
0 votes
47 views

I tried to create a simple pie chart, but my app crashes with the following expection:

java.lang.NullPointerException: Attempt to invoke virtual method 'void com.scichart.drawing.common.FontStyle.initPaint(android.graphics.Paint)' on a null object reference
    at com.scichart.charting.visuals.renderableSeries.PieDonutDrawingManagerBase.a(SourceFile:118)
    at com.scichart.charting.visuals.renderableSeries.PieDonutDrawingManagerBase.drawLabels(SourceFile:110)
    at com.scichart.charting.visuals.renderableSeries.PieRenderableSeries.internalDraw(SourceFile:70)
    at com.scichart.charting.visuals.renderableSeries.PieDonutRenderableSeriesBase.onDraw(SourceFile:560)
    at com.scichart.charting.visuals.c.onDraw(SourceFile:62)
    at android.view.View.draw(View.java:16178)

Here is my initialization code (Kotlin):

override fun onViewCreated(view: View, savedInstanceState: Bundle?)
{
    super.onViewCreated(view, savedInstanceState)

    val chartSurface = view.findViewById(R.id.chart)
    val builder = SciChartBuilder.instance()

    val pieSeries = builder
        .newPieSeries()
        .withSegments(builder
                          .newPieSegment()
                          .withValue(40.0)
                          .build(),
                      builder
                          .newPieSegment()
                          .withValue(20.0)
                          .build())
        .build()

    chartSurface.renderableSeries.add(pieSeries)
}

The SciPieChartSurface is inside a CardView inside a Constraintlayout if that could matter:

<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">   

    <android.support.v7.widget.CardView
        android:id="@+id/card_chart"
       android:layout_width="match_parent"
       android:layout_height="match_parent" >

        <com.scichart.charting.visuals.SciPieChartSurface
            android:id="@+id/chart"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    </android.support.v7.widget.CardView>
</android.support.constraint.ConstraintLayout>
0 votes
46 views

This issue repros on Android 4.4 API 19, but not API 27. It happens with the example project (Multi-Pane Stock Charts). The issue is that on certain zoom levels, the x-axis labels are cut off (so instead of displaying 11 Mar, it just displays 11).

I have tried to override TradeChartAxisLabelFormatter with my custom implementation but saw the same issue, so the bug seems to be in the provider or somewhere else.

Please see screenshot: https://imgur.com/a/2RDC2MZ

  • Mike Liu asked 3 weeks ago
  • last active 2 weeks ago
0 votes
51 views

When using GLTextureView on Android 4.4 API 19, there are a few issues. The same issue does not occur on API 27. Have not tested other API levels. If you do not use GLTextureView, this issue doesn’t happen (but due to theming bugs I have to use GLTextureView and not the other 2 types of render surfaces).

  1. If activity A has a SciChartSurface and activity B has a SciChartSurface and appears above activity A, then the surface in A dissapears (Shows blank) when you return to it. 100% repro for me. Let me know if you need more info.

  2. Due to 1? If you try to re-render the chart on activity A, it will lead to an ANR (app freezes indefinitely) after a few times (see below)

  3. Even if you don’t have activity B and only activity A, if you interact with it a few times and show/hide it, it will lead to an ANR (app freezes indefinitely) as well (see below):

ANR log (it freezes the app until you kill it):

09-03 13:01:40.583 1690-1705/system_process E/ActivityManager: ANR in co..stocks (co..stocks/.ui.screens.home.MainActivity)
PID: 12076
Reason: Input dispatching timed out (Waiting because the touched window has not finished processing the input events that were previously delivered to it.)
Load: 0.64 / 0.49 / 0.39
CPU usage from 6217ms to 779ms ago:

  • Mike Liu asked 3 weeks ago
  • last active 12 hours ago
0 votes
46 views

I’m using a CategoryDateAxis and seeing the following crash many times in production. The issue is that SciChart is not synchronizing access to SimpleDateFormat, and this will lead to a crash.

Please see following thread for more details on how to fix this issue:
https://bugs.java.com/bugdatabase/view_bug.do?bug_id=6231579

Crash log:

java.lang.ArrayIndexOutOfBoundsException: length=6; index=-4
at sun.util.calendar.BaseCalendar.getCalendarDateFromFixedDate(BaseCalendar.java:453)
at java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2411)
at java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2321)
at java.util.Calendar.setTimeInMillis(Calendar.java:1787)
at java.util.Calendar.setTime(Calendar.java:1749)
at java.text.SimpleDateFormat.format(SimpleDateFormat.java:981)
at java.text.SimpleDateFormat.format(SimpleDateFormat.java:974)
at java.text.DateFormat.format(DateFormat.java:341)
at com.scichart.charting.numerics.labelProviders.TradeChartAxisLabelFormatter.formatLabel(SourceFile:124)
at com.scichart.charting.numerics.labelProviders.FormatterLabelProviderBase.formatLabel(SourceFile:70)
at com.scichart.charting.numerics.labelProviders.CategoryLabelProviderBase.formatLabel(SourceFile:113)
at com.scichart.charting.visuals.axes.AxisBase.formatText(SourceFile:1142)
at com.scichart.charting.visuals.axes.AxisInfo.update(SourceFile:87)
at com.scichart.charting.visuals.axes.AxisTooltip.update(SourceFile:83)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehavior.a(SourceFile:84)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehavior.updateXAxisTooltip(SourceFile:62)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehaviorBase.a(SourceFile:165)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehaviorBase.onUpdate(SourceFile:158)
at com.scichart.charting.modifiers.TooltipModifierWithAxisLabelsBase.handleMasterTouchMoveEvent(SourceFile:190)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase$1.a(SourceFile:129)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase$1.execute(SourceFile:125)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase.a(SourceFile:70)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase.onTouchMove(SourceFile:59)
at com.scichart.charting.modifiers.TouchModifierBase.onTouch(SourceFile:44)
at com.scichart.charting.modifiers.ModifierGroup.onTouch(SourceFile:189)
at com.scichart.core.utility.touch.MotionEventManager.c(SourceFile:140)
at com.scichart.core.utility.touch.MotionEventManager.a(SourceFile:39)
at com.scichart.core.utility.touch.MotionEventManager$a$1.a(SourceFile:224)
at com.scichart.core.utility.touch.MotionEventManager$a$1.execute(SourceFile:221)
at com.scichart.core.utility.touch.MotionEventManager$a.a(SourceFile:211)
at com.scichart.core.utility.touch.MotionEventManager$a.onTouchEvent(SourceFile:183)
at com.scichart.charting.visuals.SciChartSurface.onTouchEvent(SourceFile:1251)
at android.view.View.dispatchTouchEvent(View.java:11776)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2962)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2643)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
09-02 01:42:23.356 17621-17621/? E/AndroidRuntime: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2968)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:448)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1829)
at android.app.Activity.dispatchTouchEvent(Activity.java:3307)
at android.support.v7.view.i.dispatchTouchEvent(WindowCallbackWrapper.java:68)
at android.support.v7.view.i.dispatchTouchEvent(WindowCallbackWrapper.java:68)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:410)
at android.view.View.dispatchPointerEvent(View.java:12015)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4795)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4609)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4147)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4200)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4166)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4293)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4174)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4350)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4147)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4200)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4166)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4174)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4147)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6661)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6635)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6596)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6764)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:186)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:177)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:6735)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:6787)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:652)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
09-02 01:42:35.433 2145-2162/? E/BatteryExternalStatsWorker: modem info is invalid: ModemActivityInfo{ mTimestamp=0 mSleepTimeMs=0 mIdleTimeMs=0 mTxTimeMs[]=[0, 0, 0, 0, 0] mRxTimeMs=0 mEnergyUsed=0}

Another crash:

java.lang.ArrayIndexOutOfBoundsException: length=13; index=15
at sun.util.calendar.BaseCalendar.getCalendarDateFromFixedDate(BaseCalendar.java:453)
at java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2411)
at java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2321)
at java.util.Calendar.setTimeInMillis(Calendar.java:1787)
at java.util.Calendar.setTime(Calendar.java:1749)
at java.text.SimpleDateFormat.format(SimpleDateFormat.java:981)
at java.text.SimpleDateFormat.format(SimpleDateFormat.java:974)
at java.text.DateFormat.format(DateFormat.java:341)
at com.scichart.charting.numerics.labelProviders.TradeChartAxisLabelFormatter.formatLabel(SourceFile:124)
at com.scichart.charting.numerics.labelProviders.FormatterLabelProviderBase.formatLabel(SourceFile:70)
at com.scichart.charting.numerics.labelProviders.CategoryLabelProviderBase.formatLabel(SourceFile:113)
at com.scichart.charting.visuals.axes.AxisBase.formatText(SourceFile:1142)
at com.scichart.charting.visuals.axes.AxisInfo.update(SourceFile:87)
at com.scichart.charting.visuals.axes.AxisTooltip.update(SourceFile:83)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehavior.a(SourceFile:84)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehavior.updateXAxisTooltip(SourceFile:62)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehaviorBase.a(SourceFile:165)
at com.scichart.charting.modifiers.behaviors.AxisTooltipsBehaviorBase.onUpdate(SourceFile:158)
at com.scichart.charting.modifiers.TooltipModifierWithAxisLabelsBase.handleMasterTouchMoveEvent(SourceFile:190)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase$1.a(SourceFile:129)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase$1.execute(SourceFile:125)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase.a(SourceFile:70)
at com.scichart.charting.modifiers.MasterSlaveTouchModifierBase.onTouchMove(SourceFile:59)
at com.scichart.charting.modifiers.TouchModifierBase.onTouch(SourceFile:44)
at com.scichart.charting.modifiers.ModifierGroup.onTouch(SourceFile:189)
at com.scichart.core.utility.touch.MotionEventManager.c(SourceFile:140)
at com.scichart.core.utility.touch.MotionEventManager.a(SourceFile:39)
at com.scichart.core.utility.touch.MotionEventManager$a$1.a(SourceFile:224)
at com.scichart.core.utility.touch.MotionEventManager$a$1.execute(SourceFile:221)
at com.scichart.core.utility.touch.MotionEventManager$a.a(SourceFile:211)
at com.scichart.core.utility.touch.MotionEventManager$a.onTouchEvent(SourceFile:183)
at com.scichart.charting.visuals.SciChartSurface.onTouchEvent(SourceFile:1251)
at android.view.View.dispatchTouchEvent(View.java:11779)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2965)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2643)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
09-03 00:01:08.300 21932-21932/co.mikeliu.stocks E/AndroidRuntime: at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2971)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2657)
at com.android.internal.policy.DecorView.superDispatchTouchEvent(DecorView.java:448)
at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1834)
at android.app.Activity.dispatchTouchEvent(Activity.java:3312)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:68)
at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:68)
at com.android.internal.policy.DecorView.dispatchTouchEvent(DecorView.java:410)
at android.view.View.dispatchPointerEvent(View.java:12018)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4829)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4643)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4181)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4234)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4200)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4327)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4208)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4384)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4181)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4234)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4200)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4208)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4181)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6755)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6694)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6655)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6858)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:193)
at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:184)
at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:6829)
at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:6881)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:652)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6545)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:809)

  • Mike Liu asked 3 weeks ago
  • last active 3 weeks ago
0 votes
60 views

I see that this can be done on WPF (using ShowLicensingWarnings), but couldn’t find the property on Android. How can the licensing warning be hidden on Android?

  • Mike Liu asked 4 weeks ago
  • last active 4 weeks ago
0 votes
47 views

If you change the logarithmic Y axis to a regular NumericalAxis, the mountain series displays properly (with fill color).

  • Mike Liu asked 4 weeks ago
  • last active 4 weeks ago
0 votes
73 views

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;
  • Mike Liu asked 4 weeks ago
  • last active 4 weeks ago
0 votes
41 views

Hi,

I’m evaluating SciChart for use in a production app.

Is there any way to log exceptions generated by SciChart? Currently I’m logging all handled and unhandled exceptions in my app to my server so that issues can be flagged without users having to manually submit support tickets. SciChart is printing internal exceptions to console – is there any way to override that with our own error handling mechanism? If not, how should we monitor for production errors generated internally by SciChart?

Thanks

  • Mike Liu asked 4 weeks ago
  • last active 4 weeks ago
0 votes
74 views

Hi,

I am using Sci chart library to plot the heart rate monitor graph.
I followed tutorials till 06 Tutorial and am able to draw graph with static data.
But as for plotting HRM graph I need, x axix to display current date and time and y-axix displaying BPM.

I tried to use ==>
final IAxis xAxis = sciChartBuilder.newDateAxis()
in my application , but when am executing it getting crashed.

Would anyone help how can I achieve this . Any help will be greatly appreciated.

Thanks,
Sushmita

1 vote
88 views

Hi

I have come across that Android Scichart consuming a lot of memory while drawing it on the surface. It increase more with the time. When i run the android memory profiler, i find out 60-65 % memory consumed by the Graphics only. The app getting started hangs after some time and become unresponsive. Please let me know how to improve the memory utilization.

0 votes
77 views

How to reduce size of colored rectangle of the legends ?

0 votes
73 views

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 ?

0 votes
69 views

can you please provide me source code (XML as well as Java) for the medical app. I have seen ECG example code but it is only for ECG. I want to show all parameters diplayed in pic.

0 votes
0 answers
80 views

Hi
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 ?

0 votes
0 answers
88 views

I want to know whether the FastRenderableSeries is out of VisibleRange or not. I can’t check with getIsVisible() as it could be invisible by the legend.

0 votes
98 views

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?

1 vote
110 views

Hi I am implementing a chart on Android with 24 Hours of data viewable in 1, 2, 4, 8, 12 and 24 hours windows. The chart is drag-able upon the xAxis only. The full extent of the yAxis is always visible.

I am struggling to control the rate of scroll compared to the drag speed. What is desired is always a perceived one to one ratio of movement. This means that a data point’s movement distance when scrolled is the same is the point of touch’s movement distance regardless of zoom level.

I am currently using:

    ChartModifierCollection surfaceChartModifiers =  surface.getChartModifiers();
    XAxisDragModifier dragModifier = new XAxisDragModifier();
    dragModifier.setDragMode(AxisDragModifierBase.AxisDragMode.Pan);
    dragModifier.setClipModeX(ClipMode.ClipAtExtents);
    surfaceChartModifiers.add(dragModifier);

    ZoomPanModifier zoomPanModifier = new ZoomPanModifier();
    zoomPanModifier.setClipModeX(ClipMode.ClipAtExtents);
    zoomPanModifier.setDirection(Direction2D.XDirection);
    zoomPanModifier.setZoomExtentsY(false);
    surfaceChartModifiers.add(zoomPanModifier);

Currently however the ratio does not appear to be one to one the scrolling move further than the touch drag distance.

How can I achieve this?

0 votes
113 views

Thank you for your previous response however I would like to know how to recover the Date value from the AxisInfo parameter of the updateInternal method of the AxisToolTip class when used with a DateAxis.

To give context to the question. I am using a DateAxis for the xAxis on this chart and specifying a customised AxisInfoProvider as in the ‘CustomizationRolloverModifierTooltips’ example. When the RolloverModifier highlights some points and if ShowAxisLabels is true then the customised version of the updateInternal method of a customised AxisToolTip is called to to display the xAxis value on the axis.

The AxisInfo object contains a dataValue member variable the question then is: how to convert this back to a Date object.

1 vote
106 views

I am moving from MPAndroidChart to SciChart but I am also required to provide the same look and feel on the chart produced.

In this app the line chart has three lineCollections vertically offset from each other in MPAndroidChart i could use the charts getHighLighter().getHightLight(x, y) to retrieve a list of the three HighLighted points. This information is then used to display detailed information on those points in a popup panel not part of the chart.

Further to this the highLighting only happens after a longClick where the HigHlight Lines and the popup info panel then appear. Chart scrolling is also disabled. The popup info panel is then updated with the point information as the highlight moves.

Upon touchUp the highlight and popup info disappear and chart scrolling is then enabled.

The RolloverModifier appears to provide the required highlighting but I am confused on how to get the points currently highlighted.

0 votes
117 views

In ECG monitor example from where data is coming ?? If I want to send external sensor data to this example code what changes do i need to do ?? Please Help me

0 votes
133 views

Hello support!
I have two questions, I would be very grateful for any information or hint.

  1. What methods can I use to bind a Visual Range to an Axis or Renderable Series to change them synchronously, I need to combine the series on 3 different surfaces.

  2. How can I control the YAxisDragModifier to block the movement of the Visual Range when a certain condition is reached. Thanks.

0 votes
124 views

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

  • Raji S asked 3 months ago
  • last active 3 months ago
0 votes
143 views

Greetings, I wonder if is it any way to save the annotations that I do in the charts?
Because when I leave the chart the annotations gone.

0 votes
189 views

Greeting, I want to do a custom cursor, something just like the image, but with candles (a candlestick chart) , and I wanna see all the info (Date, open, close, high, low). Is there any example of it?

0 votes
139 views

Hello!

We are using SciChart in our Android application, and our Crashlytics reports that it crashes:

Fatal Exception: java.lang.OutOfMemoryError
Failed to allocate a 4581372 byte allocation with 8664 free bytes and 8KB until OOM
dalvik.system.VMRuntime.newNonMovableArray (VMRuntime.java)
android.graphics.Bitmap.createBitmap (Bitmap.java:727)
com.scichart.drawing.utility.BitmapUtil.createFrom (SourceFile:46)
com.scichart.drawing.opengl.aa. (SourceFile:113)
com.scichart.drawing.opengl.n.createTexture (SourceFile:130)
com.scichart.drawing.common.AssetManagerBase.createTexture (SourceFile:158)
com.scichart.charting.visuals.rendering.a.a (SourceFile:84)
com.scichart.charting.visuals.rendering.a.a (SourceFile:54)
com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.b (SourceFile:364)
com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.a (SourceFile:357)
com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.a (SourceFile:134)
com.scichart.charting.visuals.rendering.RenderSurfaceRenderer.onDraw (SourceFile:123)
com.scichart.drawing.opengl.RenderSurfaceGL$a.onDraw (SourceFile:228)
com.scichart.drawing.opengl.MyGLRenderer.b (SourceFile:293)
com.scichart.drawing.opengl.MyGLRenderer.onDrawFrame (SourceFile:277)
android.opengl.GLSurfaceView$GLThread.guardedRun (GLSurfaceView.java:1548)
android.opengl.GLSurfaceView$GLThread.run (GLSurfaceView.java:1259)

Can anyone help please?

0 votes
237 views

Hello,

I’m trying to change the background color from black to white. I’ve been adjusting every value I can but I just can’t find how to change the areas in black/grey in the image below to white. Can anyone help? 🙂

SC-ANDROID-2D-PRO

enter image description here

0 votes
155 views

Hey There.

I am new to sciChart and i am in ahurry to develop a realtime ECG App which takes data from Bluetooth. Ignore the harware part. Can anyone kindly prove me source code of realtime ecg monitoring or realtime linechart.

Thanx in advance

0 votes
214 views

Hii !!

I have extracted the ECG Sample Code from your source project and i want to update the same RealTime via Bluetooth. I am getting a nullpoint exception.
Below is my source code too along with exception.

Exception

06-18 15:44:02.708 15813-15813/com.advancetechindia.wirelessecg
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.advancetechindia.wirelessecg, PID: 15813
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.advancetechindia.wirelessecg/com.advancetechindia.wirelessecg.MainActivity}:
java.lang.NullPointerException: Attempt to invoke virtual method
‘com.scichart.extensions.builders.DataSeriesBuilder$XyDataSeriesBuilder
com.scichart.extensions.builders.SciChartBuilder.newXyDataSeries(java.lang.Class,
java.lang.Class)’ on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2561)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method
‘com.scichart.extensions.builders.DataSeriesBuilder$XyDataSeriesBuilder
com.scichart.extensions.builders.SciChartBuilder.newXyDataSeries(java.lang.Class,
java.lang.Class)’ on a null object reference
at com.advancetechindia.wirelessecg.MainActivity.(MainActivity.java:394)
at java.lang.Class.newInstance(Native Method)
at android.app.Instrumentation.newActivity(Instrumentation.java:1100)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2551)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6123) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)

Source Code

settingChart() is Called in onCreate() of Activity

//SciChart Work

protected final SciChartBuilder sciChartBuilder =
SciChartBuilder.instance();
private final static long TIME_INTERVAL = 20;

private final IXyDataSeries<Double, Double> series0 = sciChartBuilder.newXyDataSeries(Double.class,
Double.class).withFifoCapacity(3850).build();
private final IXyDataSeries<Double, Double> series1 = sciChartBuilder.newXyDataSeries(Double.class,
Double.class).withFifoCapacity(3850).build();

private ArrayList<Double> sourceData;
  
  private int _currentIndex;
  private int _totalIndex;
  
  private MainActivity.TraceAOrB whichTrace = MainActivity.TraceAOrB.TraceA;
  
  private final ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
  private ScheduledFuture<?> schedule;
  
  private volatile boolean isRunning = true;
  SciChartSurface surface;
  private void settingSciChart() {
      sourceData=new ArrayList<>();
      surface=(SciChartSurface)findViewById(R.id.ecg);
  
      initExample();
  }
  
  private void initExample() {
      UpdateSuspender.using(surface, new Runnable() {
          @Override
          public void run() {
              final IAxis xBottomAxis = sciChartBuilder.newNumericAxis()
                      .withVisibleRange(new DoubleRange(0d, 10d))
                      .withAutoRangeMode(AutoRange.Never)
                      .withAxisTitle("Time (seconds)")
                      .build();
  
              final IAxis yRightAxis = sciChartBuilder.newNumericAxis()
                      .withVisibleRange(new DoubleRange(-0.5d, 1.5d))
                      .withAxisTitle("Voltage (mV)")
                      .build();
  
              final IRenderableSeries rs1 = sciChartBuilder.newLineSeries()
                      .withDataSeries(series0)
                      .build();
  
              final IRenderableSeries rs2 = sciChartBuilder.newLineSeries()
                      .withDataSeries(series1)
                      .build();
  
              Collections.addAll(surface.getXAxes(), xBottomAxis);
              Collections.addAll(surface.getYAxes(), yRightAxis);
              Collections.addAll(surface.getRenderableSeries(), rs1, rs2);
          }
      });
  
      schedule = scheduledExecutorService.scheduleWithFixedDelay(new Runnable() {
          @Override
          public void run() {
              UpdateSuspender.using(surface, appendDataRunnable);
          }
      }, 0, TIME_INTERVAL, TimeUnit.MILLISECONDS);
  }
  
  private final Runnable appendDataRunnable = new Runnable() {
      @Override
      public synchronized void run() {
          if (isRunning) {
              for (int i = 0; i < 10; i++) {
                  appendPoint(400);
              }
          }
      }
  };
  
  private synchronized void appendPoint(double sampleRate) {
      if (_currentIndex >= sourceData.size()) {
          _currentIndex = 0;
      }
  
      // Get the next voltage and time, and append to the chart
      double voltage = sourceData.get(_currentIndex);
      double time = (_totalIndex / sampleRate) % 10;
  
      if (whichTrace == MainActivity.TraceAOrB.TraceA) {
          series0.append(time, voltage);
          series1.append(time, Double.NaN);
      } else {
          series0.append(time, Double.NaN);
          series1.append(time, voltage);
      }
  
      _currentIndex++;
      _totalIndex++;
  
      if (_totalIndex % 4000 == 0) {
          whichTrace = whichTrace == MainActivity.TraceAOrB.TraceA ? MainActivity.TraceAOrB.TraceB : MainActivity.TraceAOrB.TraceA;
      }
  }
  
  enum TraceAOrB {
      TraceA,
      TraceB
  }
  
0 votes
194 views

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

-1 votes
0 answers
131 views

The two pictures are part of the same column, but the time is different.
How to solve it?

0 votes
349 views

our app is about Futures. we will buy license for IOS and Android.

we found some question.

so we need show very small values, like Euro exchange’s values will be from 1.1981 to 1.2008.
its Tick Size is 0.0001 .

but we use LogarithmicNumericAxis with OhlcDataSeries<Date, Double> , surface still linear scale.

other question.
how to custom LogarithmicNumericAxis’s “TextFormatting” like “$0.0000”

  • Rey Liang asked 5 months ago
  • last active 5 months ago
0 votes
277 views

In Xamarin.IOS when you set the legend to Horizontal and Top it will create a legend at the top then allow you to scroll horizontally to see all your LineSeries. In Xamarin.Android when you have more Series than can originally fit on the screen, the legend malfunctions and takes up the entire screen. Picture will be attached.

-1 votes
0 answers
244 views

When i go to zoom on my YAxis while a YAxis VisibleRangeLimit is baing set, the zoom does not work correctly. Once the zooming is finished it will reset back to the range limit. If i remove the range limit, the zooming then works as expected.

0 votes
382 views

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

0 votes
298 views

When I open activity with chart on real devices chart area for a moment has black color and theh succesfuly displayed chart data.
On emulators I do not see thes behavior.
How can I fix black screen?

0 votes
279 views

Hi,
I want to implement a chart that represent currency changed rate, so that the chart will show a rise with a green point and a fall with a red point.

in the image I’ve uploaded I’ve used Custom PaletteProvider to manipulate the colors accordingly.

what I want to implement is instead of coloring the Point (Ellipse) I want to load an Image.
the closest i’ve got is to load a single image to all the points, without theme changing (red or green) accordingly.

I did managed to implement that exact behavior in iOS.

how could I implement a dynamically changing Sprits in a PaletteProvider ?

Thanks in advance…

0 votes
277 views

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?

0 votes
278 views

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?

0 votes
267 views

When trying to create a candlestick graph, if I have data with no high low bars with a range of more than 0.00950 then the graph won’t zoom in on initial load. See my code further below. Above 0.00950 and it’s okay. BTW I’ve tried withVisibleRage.

Please help, my trial is going to run out soon. I’m really stuck.

For example:

The following won’t zoom in:

[
    {
        "symbol": "AUDCAD",
        "ctm": "2018-02-10 09:00:00",
        "high": 0.98000,
        "low": 0.97100,
        "open": 0.97900,
        "close": 0.97800,
        "volume": 1238
    } ]

The following does zoom in:

[
    {
        "symbol": "AUDCAD",
        "ctm": "2018-02-10 09:00:00",
        "high": 0.98000,
        "low": 0.97000,
        "open": 0.97900,
        "close": 0.97800,
        "volume": 1238
    }
]

Here’s a screenshots:

enter image description here enter image description here

Here’s the code which produces the charts:

final CategoryDateAxis xAxis = sciChartBuilder.newCategoryDateAxis()
        .withVisibility(isMainPane ? View.VISIBLE : View.GONE)
        .withAutoTicks(true)
        .withGrowBy(new DoubleRange(0d, 0.1d))
        .build();

final NumericAxis yAxis = sciChartBuilder
        .newNumericAxis()
        .withAxisId(PRICES)
        .withAutoRangeMode(AutoRange.Always)
        .withDrawMinorGridLines(true)
        .withDrawMajorGridLines(true)
        .withMinorsPerMajor(10)
        .withMaxAutoTicks(20)
        .withGrowBy(new DoubleRange(0d, 0.1d))
        .build();

surface.getXAxes().add(xAxis);
surface.getYAxes().add(yAxis);

surface.getRenderableSeries().addAll(model.renderableSeries);
0 votes
301 views

How can I append a float array to an XYDataSeries?

I’m developing an app with scichart. I receive buffers of 20 floats in a float[] type. How can I append this buffer to an XYDataSeries? The chart is updated in real time each time one Buffer is received with FIFO capacity.

What I need is something similar to:

void updateChart(final float[] a, final float[] b) {
    UpdateSuspender.using(surface, new Runnable() {
            @Override
            public void run() {
                // Append the new data received
                lineData.append(a,b);
                // Zoom series to fit the viewport to the x variable
                surface.zoomExtentsX();
            }
        });
}

Is this possible?
Thank you in advance

0 votes
315 views

I have an error after update Android Stutio to version 3.1
But project is steel builds and run successfully

0 votes
298 views

Hi

Please can you give me a guide as to how to pull out the Android EEG channel example into a standalone project so that I can use it and build on it.

I have tried but I am getting errors.

Thanks

  • BuchananA5 asked 6 months ago
  • last active 5 months ago
0 votes
696 views

Hi everyone!

Tell me please why this is happening (in logcat) This is the message I always get the first call or load the markup with scichart

03-30 14:20:46.406 3564-3564/com.gtmobile D/WellDetailChartFragment: BEFORE INFLATE…
03-30 14:20:46.457 3564-3564/com.gtmobile E/libEGL: call to OpenGL ES API with no current context (logged once per thread)
03-30 14:20:46.471 3564-3564/com.gtmobile D/WellDetailChartFragment: AFTER INFLATE…

Сan anyone give me an example of markup for <android.support.design.widget.CoordinatorLayout>
what should I use there is a container to display the scichart?

Have tried containers for Fragment with scichart :

in the first case gives an error (Perhaps this is not acceptable, because the container has a scroll)

<android.support.v4.widget.NestedScrollView
    android:id="@+id/well_detail_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

in the second case is not displayed, ie just empty.

<FrameLayout
    android:id="@+id/well_detail_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

I need to work in the wide screen mode (tablet) has several elements on the screen.

In simple activity (as in your examples) everything works perfectly.

On my test device Android 7.0

Android Studio 3.1
Gradle(app)
minSdkVersion 19
targetSdkVersion 26
I am using trial version scichart which will end in a few days 🙁

Thanks in advance for any information.

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