Questions

Hello,

is it possible to color the curve with different color(s) after specific value(s)
to sumurise the idea, please see the illistustration in this image : https://i.stack.imgur.com/1MWKL.png

Thank you for your support

Regards

Hi ,

Does scichart graph X-Axis supports datetime?

I am getting examples with only NumericAxis examples in internet.

So is it possible to send me some code snippet with datetime with X-Axis.

Thanks & regards,
Kartik K

a) change y and z axis order , must be (x,y)->z,
b) the contour graph is sliced in rectangular form when colored, how to solve this?

a) we are trying product, but when I draw surface graph z data come to y axis or tooltip label,I use like this
int xSize = 15;
int ySize = 100;

        var meshDataSeries = new UniformGridDataSeries3D<double>(xSize, ySize)
        {



            SeriesName = "Uniform Surface Mesh",
        };


        int h = 0;

        for (int x = 0; x <xSize; x++)
            for (int y = 0; y < ySize; y++)
        {

            {

                double z =(double) shortArrayz[h];
             meshDataSeries[y, x] = z;

                h += sizeof(short);

            }

b) images attached, contour graph code is atteched

I have a ViewPager which switches between Fragments that have a SciChartSurface in their layout. I have two problems with this.

1. When swiping the ViewPager the SciChartSurface shows a black bar on its side (see attached image).

2. When swiping I cannot achieve 60 fps on my device. Upon inspecting systrace I see scheduling delay for each frame. Upon inspecting Android profiler’s flame chart I see that SurfaceView calls android.os.BinderProxy.transact() which takes most of the time. If I change the layout of the Fragments used in ViewPager to a normal View, then android.os.MessageQueue.nativePollOnce() takes about 80% of the time, which means most of the time the CPU is idling because drawing takes up so little time.

My question is how can I solve both problems. Have I configured the SciChartSurface wrongly to get the black bars. Can I do anything to speed up changing tabs in ViewPager with SciChartSurfaces in the Fragments?

Edit 14. 1. 2019

I have attached a sample project to reproduce the problem.

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?

Hi guys,

Is it possible to capture the tap event when we tap on a point marker or a data point? I can see there’s a DataPointSelectionModifier for WPF, but there’s nothing for iOS. Our goal is to show a popup (tooltip) on the point marker when the user taps on it.

Thanks,
Lazar Nikolov

I’d like to display the values of series data points using TooltipModifer.

However, if you hold the mouse cursor over the series, the tool tip will be displayed even if there are no data points.

Attach a movie to explain the phenomenon.

I would like to display the tool tip only when I hold the mouse cursor where I have the data point, how can I do it?

As shown in the attached image, if you display a small value with TooltipModifier, it will be rounded to 0 and displayed.

I specified ContentStringFormat with Xaml, but the decimal point is not displayed.

How can I correctly display it?

Hello, I have two questions. The first is we use the annotations to create threshold lines and labels on axis. We would like these lines to appear in the legend data. Is there a way to add them manually to the collection of seriesinfo? What do you recommend.

The second question is that we have a large amount of series data and we were rendering the chart to bitmap. When there is a lot of data the legend is in a scrollview and you cannot see all of it. What do you recommend do in this scenario. Is there a way to make the legend appear in wrap panel?

Thanks, Kurt

It seems like a memory leak of sciChartSurface. After call Dispose(), some sciChartSurfaces are also refrenced by MouseManager and can’t release.

I also use ants memory profiler, but this web page can’t upload images and attachments, it alerts Forbidden!

The leak instance reference chain is:
MouseManager.I -> Dictionary<string,IList<Mouse.IReceiveMouseEvents>> -> SciChart.Core.Utility.Mouse.IReceiveMouseEvents[] -> SciChart.Charting.ChartModifiers.ModifierGroup -> SciChart.Charting.Visuals.SciChartSurface .

Below is the key code:

>

    private SciChartSurface sciTickPriceChartSurface;
    private FastLineRenderableSeries lastPriceLineRenderableSeries;
    private SciChartSurface sciTickVolumeChartSurface;
    private FastLineRenderableSeries volumeLineRenderableSeries;

    private void LoadSciTickCharts()
    {
        // set sciTickPriceChartSurface xAxis
        var nowDateTime = DateTime.Now; 
        var todayDate = nowDateTime.Date;

        // set sciTickPriceChartSurface
        sciTickPriceChartSurface = new SciChartSurface();
        sciTickPriceChartSurface.ViewportManager = new TickChartViewportManager(todayDate);

        var priceChartXAxis = new DiscontinuousDateTimeAxis
        {
            DrawLabels = false,
            MajorDelta = new TimeSpan(1, 0, 0),
            MinorDelta = new TimeSpan(0,12,0),
            MinimalZoomConstrain = new TimeSpan(1,0,0),
            AutoTicks = false,
            DrawMajorGridLines = true,
            DrawMinorGridLines = false,
            AutoRange = AutoRange.Never,
            LabelProvider = new TickDateTimeAxisLabelProvider(),
            //Calendar = new LSECalendar(), 
            VisibleRange = new DateRange(nowDateTime - new TimeSpan(1,0,0), nowDateTime + new TimeSpan(3,0,0)),
        };

        sciTickPriceChartSurface.XAxes.Add(priceChartXAxis);

        // set sciTickPriceChartSurface yAxis
        var priceYAxis = new NumericAxis
        {
            DrawMajorGridLines = true,
            DrawMinorGridLines = false,
            AutoRange = AutoRange.Always,
            GrowBy = new DoubleRange(0.2, 0.2)
        };
        sciTickPriceChartSurface.YAxes.Add(priceYAxis);

        // lastPriceLineSeries
        lastPriceLineRenderableSeries = new FastLineRenderableSeries
        {
            Stroke = Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF),
            StrokeThickness = 1,
            DataSeries = new XyDataSeries<DateTime, double>(),
        };
        sciTickPriceChartSurface.RenderableSeries.Add(lastPriceLineRenderableSeries);
        CursorModifier.SetSnapToSeries(lastPriceLineRenderableSeries, true);

        // sciTickVolumeChartSurface
        sciTickVolumeChartSurface = new SciChartSurface();

        // set sciTickVolumeChartSurface yAxis
        var volumeYAxis = new NumericAxis
        {
            DrawMajorGridLines = true,
            DrawMinorGridLines = false,
            AutoRange = AutoRange.Always,
            GrowBy = new DoubleRange(0, 0)
        };
        sciTickVolumeChartSurface.YAxes.Add(volumeYAxis);

        var volumeChartXAxis = new DiscontinuousDateTimeAxis
        {
            DrawLabels = true,
            MajorDelta = new TimeSpan(1, 0, 0),
            MinorDelta = new TimeSpan(0, 12, 0),
            MinimalZoomConstrain = new TimeSpan(1, 0, 0),
            AutoTicks = false,
            DrawMajorGridLines = true,
            DrawMinorGridLines = false,
            AutoRange = AutoRange.Never,
            LabelProvider = new TickDateTimeAxisLabelProvider(),
            //Calendar = new LSECalendar()
        };
        sciTickVolumeChartSurface.XAxes.Add(volumeChartXAxis);

        // Bind the VisibleRange of chart2.XAxis.VisibleRange to chart1.XAxis.VisibleRange TwoWay
        var xAxisVisibleRangeBinding = new Binding("VisibleRange")
        {
            Source = priceChartXAxis,
            Mode = BindingMode.TwoWay,
        };
        BindingOperations.SetBinding(volumeChartXAxis, SciChart.Charting.Visuals.Axes.AxisBase.VisibleRangeProperty, xAxisVisibleRangeBinding);

        // volumeLineSeries
        volumeLineRenderableSeries = new FastLineRenderableSeries
        {
            Stroke = Color.FromArgb(0xFF, 0x0, 0xFF, 0xFF),
            StrokeThickness = 1,
            DataSeries = new XyDataSeries<DateTime, long>(),
        };
        sciTickVolumeChartSurface.RenderableSeries.Add(volumeLineRenderableSeries);
        CursorModifier.SetSnapToSeries(volumeLineRenderableSeries, true);

        var grid = new Grid();
        grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(2, GridUnitType.Star) });
        grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Auto) });
        grid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Star) });

        var gridSplitter = new GridSplitter
        {
            MinHeight = 4,
            HorizontalAlignment = HorizontalAlignment.Stretch,
            Background = new SolidColorBrush(Color.FromRgb(0xFF, 0xFF, 0x0))
        };

        Grid.SetRow(sciTickPriceChartSurface, 0);
        Grid.SetRow(gridSplitter, 1);
        Grid.SetRow(sciTickVolumeChartSurface, 2);

        grid.Children.Add(sciTickPriceChartSurface);
        grid.Children.Add(gridSplitter);
        grid.Children.Add(sciTickVolumeChartSurface);

        var priceChartSurfaceModifier = new ModifierGroup(

            // Allow pan on Left mouse drag
            new ZoomPanModifier { ExecuteOn = ExecuteOn.MouseLeftButton, ClipModeX = SciChart.Charting.ClipMode.None },
            // <!-- Allow Mousewheel Zoom -->
            new MouseWheelZoomModifier(),
            // <!-- Allow Zoom to Extents on double click -->
            new TickChartZoomExtentsModifier { ExecuteOn = ExecuteOn.MouseDoubleClick },
            // Alow cursor modifier
            new CursorModifier
            {
                SourceMode = SourceMode.AllSeries,
                ShowTooltipOn = ShowTooltipOptions.Always,
                ShowAxisLabels = true,
                ReceiveHandledEvents = true,
                ShowTooltip = true,
                IsEnabled = true,
            }
        );
        sciTickPriceChartSurface.ChartModifier = priceChartSurfaceModifier;

        var volumeChartSurfaceModifier = new ModifierGroup(

            // Allow pan on Left mouse drag
            new ZoomPanModifier { ExecuteOn = ExecuteOn.MouseLeftButton, ClipModeX = SciChart.Charting.ClipMode.None },
            // <!-- Allow Mousewheel Zoom -->
            new MouseWheelZoomModifier(),
            // <!-- Allow Zoom to Extents on double click -->
            new TickChartZoomExtentsModifier { ExecuteOn = ExecuteOn.MouseDoubleClick },
            // Alow cursor modifier
            new CursorModifier
            {
                SourceMode = SourceMode.AllSeries,
                ShowTooltipOn = ShowTooltipOptions.Always,
                ShowAxisLabels = true,
                ReceiveHandledEvents = true,
                ShowTooltip = true,
                IsEnabled = true,
            }
        );
        sciTickVolumeChartSurface.ChartModifier = volumeChartSurfaceModifier;

        var tickChartsMouseEventSharedGroupName = UUIDHelper.CreateUUIDString(false).ToString();
        MouseManager.SetMouseEventGroup(priceChartSurfaceModifier, tickChartsMouseEventSharedGroupName);
        MouseManager.SetMouseEventGroup(volumeChartSurfaceModifier, tickChartsMouseEventSharedGroupName);

        var tickChartSharedGroupName = UUIDHelper.CreateUUIDString(false).ToString();
        SciChartGroup.SetVerticalChartGroup(sciTickPriceChartSurface, tickChartSharedGroupName);
        SciChartGroup.SetVerticalChartGroup(sciTickVolumeChartSurface, tickChartSharedGroupName);

        this.ChartGrid.Children.Clear();
        this.ChartGrid.Children.Add(grid);
    }

    public void Dispose()
    {
        if (isDisposed == true) return;
        isDisposed = true;

        // Don't forget to clear chart grid child list.
        ChartGrid.Children.Clear();

        if (sciTickPriceChartSurface != null)
        {
            // Chart's Dispose method needs to be called when chart is 
            // no longer needed so that all unmanaged resources 
            // (DirectX etc.) are released.
            sciTickPriceChartSurface.ChartModifier?.OnDetached();
            sciTickPriceChartSurface?.Dispose();
            sciTickPriceChartSurface = null;

        }
        if (sciTickVolumeChartSurface != null)
        {
            // Chart's Dispose method needs to be called when chart is 
            // no longer needed so that all unmanaged resources 
            // (DirectX etc.) are released.
            sciTickVolumeChartSurface?.ChartModifier?.OnDetached();
            sciTickVolumeChartSurface?.Dispose();
            sciTickVolumeChartSurface = null;
        }
        GC.SuppressFinalize(this);
    }

I making MVVM application.

I want to Bind SelectedPointMarkers of DataPointSelectionModifier.
But SelectedPointMarkers is readonly property.

Therefore, I couldn’t bind.

How can I bind it?

I want to create a chart with Fixed number of column series with uniform width. For example, X Asis visible range is 0-100 and i want to have 5 column series, 1st column range is 0-20, 2nd columns is 20-40, 3rd column is 40-60 ,4th coulmn is 60-80 and 5th column is 80-100. and there should not be space between columns.I have attached a screen shot of chart that i expected. Please let me know whether its possible?
Thanks

I’m trying to build a chart control that adheres to MVVM and noticed that I have the option to use NumericAxis or NumericAxisForMvvm, but I’m not sure exactly what the differences would be. I couldn’t really find anything in depth on them in the documentation but maybe I missed something.

Is anyone aware of any differences? I’m assuming NumericAxisForMvvm would be best for what I’m wanting but I’m not exactly sure why.

Thanks!

Hi,

we’ve just update scichart from 5.1.0.11425 -> 5.2.1.11757

Since this, the renderable series is not updating when the bound property change is notified.

anybody else seen this?

            <s:XyScatterRenderableSeries DataSeries="{Binding AcceptableDataPoints}" s:TooltipModifier.TooltipTemplate="{StaticResource XyTooltipTemplate}">
                <s:XyScatterRenderableSeries.PointMarker>
                    <s:EllipsePointMarker Width="9" Height="9"  Fill="#AAFFFFFF" Stroke="SteelBlue" StrokeThickness="2" ></s:EllipsePointMarker>
                </s:XyScatterRenderableSeries.PointMarker>
            </s:XyScatterRenderableSeries>

I have a chart that has real-time data being added to it and I want to ensure the chart sizes up to show everything. This chart also displays series that have already been added and I would like to zoom in/out on those. How would I handle both of these at the same time?

i want to insert 500 data on the left of chart.
then, it freezes slightly.
so, i want to present indicator.
how can i listen to start and end of drawing?

We are making SCIChart with MVVM.
For the Model layer, we use .NET Standard 2.0.
The View layer and the ViewModel layer use .Net Framework 4.7.1.

Since we want to aggregate into the logic in the Model layer,
I would like to use some of the parts SciChart provides with .NET Standard 2.0.

An example
SciChart.Charting.Model.DataSeries.IPointMetadata
SciChart.Charting.Model.DataSeries.IXyDataSeries

How can I decide whether the SCI offering class can be used in .NET Standard?

By acquiring “SciChart (5.2.1.11757)” from NuGet in the library of the Model layer,
I could confirm that it work correctly.

What is the package for the .Net Standard 2.0 project?

Thank you.

Hi,

I have 3 separate line series and 1 column bar series. Whenever I switch between activities, Column bar data and range persist but not for the line series.

Whenever I return back from activityB to ActivityA it never calls restoreInstanceState. How can I persist the states of these graph?

Snap short attached for reference.

—–code,

initChartUI() {

    SciChartBuilder.init(mContext)
    sciChartBuilder = SciChartBuilder.instance()

    xyIapDataSeries =
            sciChartBuilder.newXyDataSeries(Date::class.javaObjectType, Short::class.javaObjectType)
                .withSeriesName(getString(R.string.label_iap)).build()

    xyTempDataSeries =
            sciChartBuilder.newXyDataSeries(Date::class.javaObjectType, Short::class.javaObjectType)
                .withSeriesName(getString(R.string.label_temperature)).build()

    xyUoDataSeries =
            sciChartBuilder.newXyDataSeries(Date::class.javaObjectType, Short::class.javaObjectType)
                .withSeriesName(getString(R.string.label_uo)).build()

    xyRrDataSeries =
            sciChartBuilder.newXyDataSeries(Date::class.javaObjectType, Short::class.javaObjectType)
                .withSeriesName(getString(R.string.label_respiratory_rate)).build()

    initChartIap(iap_chart)
    initChartUo(uo_chart)
    initChartTemp(temperature_chart)
    initChartRR(resp_rate_chart)

}

private fun initChartIap(surface: SciChartSurface) {
val xAxis = sciChartBuilder.newCategoryDateAxis()
.withBarTimeFrame(SECONDS_IN_FIVE_MINUTES.toDouble())
.withDrawMinorGridLines(false)
.withGrowBy(0.0, 0.5)
.build()
val yAxis = sciChartBuilder.newNumericAxis().withAutoRangeMode(AutoRange.Always).build()

    val line = sciChartBuilder.newLineSeries().withStrokeStyle(R.color.accuryn_blue, STROKE_THICKNESS)
        .withDataSeries(xyIapDataSeries).build()

    // Create a Stroke Pen and assign it
    val strokePen = SolidPenStyle(resources.getColor(R.color.accuryn_blue, null), true, 2f, null)
    line.strokeStyle = strokePen

    UpdateSuspender.using(surface) {
        Collections.addAll(surface.xAxes, xAxis)
        Collections.addAll(surface.yAxes, yAxis)
        Collections.addAll<BaseRenderableSeries>(surface.renderableSeries, line)
        Collections.addAll<AxisMarkerAnnotation>(surface.annotations, iapAxisMarker)
        Collections.addAll(
            surface.chartModifiers, sciChartBuilder.newModifierGroup()
                .withXAxisDragModifier().build()
                .withZoomPanModifier().withReceiveHandledEvents(true).withXyDirection(Direction2D.XDirection).build()
                .withPinchZoomModifier().build()
                .build()
        )
    }

……
rest 3 other types….
…..
override fun onSaveInstanceState(outState: Bundle) {

    outState.run {
        putInt("count", xyIapDataSeries.count)
        putInt("uoCount", xyUoDataSeries.count)
        putInt("tempCount", xyTempDataSeries.count)
        putInt("rrCount", xyRrDataSeries.count)

        val iapRange = iap_chart.xAxes[0].visibleRange
        val uoRange = uo_chart.xAxes[0].visibleRange
        val tempRange = temperature_chart.xAxes[0].visibleRange
        val rrRange = resp_rate_chart.xAxes[0].visibleRange

        putDouble("rangeIapMin", iapRange.getMinAsDouble())
        putDouble("rangeIapMax", iapRange.getMaxAsDouble())
        putDouble("rangeUoMin", uoRange.getMinAsDouble())
        putDouble("rangeUoMax", uoRange.getMaxAsDouble())
        putDouble("rangeTempMin", tempRange.getMinAsDouble())
        putDouble("rangeTempMax", tempRange.getMaxAsDouble())
        putDouble("rangeRrMin", rrRange.getMinAsDouble())
        putDouble("rangeRrMax", rrRange.getMaxAsDouble())
    }
    super.onSaveInstanceState(outState)
}

override fun onPostCreate(savedInstanceState: Bundle?) {
super.onPostCreate(savedInstanceState)

    updateIapData(savedInstanceState)
    updateUoData(savedInstanceState)
    updateTempData(savedInstanceState)
    updateRRData(savedInstanceState)
}

override fun onRestoreInstanceState(savedInstanceState: Bundle?) {
    super.onRestoreInstanceState(savedInstanceState)
     updateIapData(savedInstanceState)
    updateUoData(savedInstanceState)
    updateTempData(savedInstanceState)
    updateRRData(savedInstanceState)
}

private fun updateIapData(savedInstanceState: Bundle?) {
UpdateSuspender.using(iap_chart) {
var count = DEFAULT_POINT_COUNT
if (savedInstanceState != null) {
count = savedInstanceState.getInt(“count”)

            val rangeMin = savedInstanceState.getDouble("rangeIapMin")
            val rangeMax = savedInstanceState.getDouble("rangeIapMax")

            iap_chart.xAxes[0].visibleRange.setMinMaxDouble(rangeMin, rangeMax)
        }

        val iap = mutableListOf<Short>()
        val date = mutableListOf<Date>()
        for (entry in mSimplifiedDataList) {
            if (entry.emr.iap > 0) {
                iap.add(entry.emr.iap)
                date.add(Date(DateTimeUtils.toEpochMilli(entry.getRtcTimeStamp())))
            } else {
                iap.add(0)
                date.add(Date(DateTimeUtils.toEpochMilli(entry.getRtcTimeStamp())))
            }
        }
        tv_iap_input_data.text = iap[iap.size.minus(1)].toString()
        xyIapDataSeries.append(date, iap)
    }
}

……rest other for updating data over UI.

I have graphs on two adjacent fragments, and when I select one, then swap to the other, the legend draws like this.
I believe it is because I am setting up & drawing the graph when it is off screen. As when you are viewing a fragment it loads the ones to either side for smooth operation, but is there any way to fix this? Maybe I’m doing something wrong and that’s why I’m getting the weird check boxes.

To be clear, these are all checked, but they look weird to our end-users

I have stock charts and want to prevent the user to go beyond the Min/Max datetimes (left, right). I tried applying setVisibleRangeLimitMode() to XAxis but it has no effect:

private final DoubleRange sharedXRange = new DoubleRange();

//sharedXRange.setMinMax(0d, response.body().getData().size()-1d); // not helping
...
final CategoryDateAxis xAxis = sciChartBuilder.newCategoryDateAxis()
        .withVisibility(isMainPane ? View.VISIBLE : View.GONE)
        .withVisibleRange(sharedXRange)
        .withGrowBy(0.1d, 0.1d)
        .build();

xAxis.setMinimalZoomConstrain(10d); // minimum 10 points
xAxis.setVisibleRangeLimitMode(RangeClipMode.MinMax); // not working
//xAxis.setVisibleRangeLimit(new DoubleRange(-5d,5d));
...

I am thinking that maybe I should set Min and Max to sharedXRange, but couldn’t find in the docs what value to put into (tried with index, and Date without luck).

I am using Android charts and would like to know more about how to customize the YAxis. In the tutorials, there is ussualy something like

builder.newNumericAxis()
.withMinorsPerMajor(4)
.withMaxAutoTicks(8)
.withGrowBy(new DoubleRange(0.1, 0.1))
.build();

In the documentation, I can’t find any explanation for withGrowBy(). What is it used for and are there any examples? What does it mean to have DoubleRange(0.1, 0.1) or DoubleRange(0.01, 0.01)?

Hello,

I’m working on an analysis software that uses Scichart API for generating graphics in WPF.

I recently used Scichart IOS / Android apps and I really liked the graphics animations.

However, I did not find the way to do the same thing in WPF.

Is it possible to animate the loading of graphics or any other animation?

Thank you.

I have an issue with the latest version of Scichart. I have a chart which we are exporting to an image after cloning. We are using the CreateCloneOfSurfaceInMemory API call to take the clone. The problem is that, the annotations are getting lost from the cloned surface. I spent some time debugging and found that this is getting lost when we have VerticalSliceModifier in the Modifier group. I have attached the SciChart_CreateAnnotationsDynamically example which is modified to replicate this issue.

hi everyone
when i use utf8 string such as ‘محور’ = axis in persian sciChart lookLike this .
i tried different fonts but did not work .

 SciChartBuilder.init(this@Main2Activity)

    // Obtain the SciChartBuilder instance
    val sciChartBuilder = SciChartBuilder.instance()

    val myCustomFont: Typeface? = ResourcesCompat.getFont(this, R.font.maryam)
    val fontStyle = FontStyle(myCustomFont, 50f, Color.RED)

    val s = String("محور".toByteArray(Charsets.UTF_8))

    xAxis = sciChartBuilder.newNumericAxis().withAxisTitleStyle(fontStyle).withAxisTitle(s).withGrowBy(DoubleRange(0.1, 0.1)).build()
    yAxis = sciChartBuilder.newNumericAxis().withAxisTitle("this is y").withGrowBy(DoubleRange(0.1, 0.1)).build()

    val dataSeries = XyDataSeries(Double::class.javaObjectType, Double::class.javaObjectType)
    dataSeries.append(arrayOf(0.0, 2.0, 4.0, 6.0, 8.0, 10.0), arrayOf(1.0, 5.0, -5.0, -10.0, 10.0, 3.0))

    rs = sciChartBuilder.newColumnSeries()
            .withDataSeries(dataSeries)
            .withStrokeStyle(ColorUtil.White, 3f, false)
            .build()

    surface.chartModifiers.add(sciChartBuilder.newModifierGroupWithDefaultModifiers().build())

    UpdateSuspender.using(surface) {
        Collections.addAll<IAxis>(surface.xAxes, xAxis)
        Collections.addAll<IAxis>(surface.yAxes, yAxis)
        Collections.addAll<FastColumnRenderableSeries>(surface.renderableSeries, rs)

    }

and the result :

result image

Hello, I’m trailing your library right now. I would like to be able to move the graph around as well as a cursor on the graph. So I enabled both SCIZoomPanModifier and SCICursorModifier. But since both use one finger panning, the result wasn’t that good. Do you have any guidance for solving the conflict and letting them working together? I’m thinking to do it in the following way: if the touch location is within certain pixel range of the cursor, panning action will move the cursor, otherwise it moves the graph. Is it possible? Thanks

Hello, I’m trailing your library right now. I’m wondering how to change the background color of the legend box. The document page for LegendModifier shows coming soon. I don’t see such option in LegendModifier definition in Xcode either. Thanks

I have created a SciChartSurface with a ColumnSeries. I update the series data every second with new values. I have turned on GPU profiling in Android developer options. After running the application I get the image shown in the attachment “SciChart_noCursor”. There are no new columns from the profiler drawn on each update of the chart’s data series. However when I add a VerticalLineAnnonation (which I use as a cursor) I get the image shown in the attachment “SciChart_withCursor”. On every update of the chart’s data series, the SciChartSurface is remeasured and redrawn and a lot of the frames take longer than 16.6 ms to redraw. I have also attached the source code of my example project.

My question is, is there a way to have a cursor line that won’t cause the whole surface to redraw on every update? In my production code I update the chart’s data 5 times per second and I have a much more complex layout. And causing layout measure on SciChartSurface is causing lots of janky frames. The reason I used a vertical line annotation as cursor is because I have have cursor info drawn outside of the SciChartSurface in my own TextView and with the built in cursor I wasn’t able to achieve that.

We’d like to customize the look of our legends. We have 4 legends displaying different data, but right now the only thing we can change is the Theme. Is there any way to customize the legend items, like add some icons, change the point marker shape and size, change the check box icon etc…

P.S.: I’m not a trial user. We have an iOS, Android and WPF licenses purchased.

Project info:
Xamarin.Android
SciChart.Android 2.2.2.854

Version
2.2.2.854

Andrew required swift code so I attach the code.
Please answer my question again.

https://www.scichart.com/questions/question/customize-chart-designwith-pic
https://www.scichart.com/questions/question/cannnot-remove-weird-square-areas

Andrew answered second question, but it didn’t work.
There is no drawAxisBands.