Pre loader

Category: Android

1 vote
43 views

Hi,
i have some candles and i want to force the chart for removing candles with
open = Double.NaN
high = Double.NaN
low = Double.NaN
close = Double.NaN
openTime – special day (timestamp)

What I see:

1 vote
81 views

Hi,

I’m using scichart for android and trying to change the color of the column that was hit by touch. I have successfully identified which index of the data series that was hit. I’ve looked all over the android documentation but does not find an answer or example for this. This is my onTouch function:

@Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        SciChartSurface surface = (SciChartSurface) view;
        touchPoint.set(motionEvent.getX(), motionEvent.getY());
        surface.translatePoint(touchPoint, surface.getRenderableSeriesArea());

        for (IRenderableSeries renderableSeries : surface.getRenderableSeries()) {
            renderableSeries.hitTest(hitTestInfo, touchPoint.x, touchPoint.y, 30);
            if (hitTestInfo.isHit) {
                Double yValue = consumptionDataSeries.getYValues().get(hitTestInfo.dataSeriesIndex);
                // Todo: Show a text annotation and color the column differently
                Toast.makeText(this.getContext(), yValue.toString(), Toast.LENGTH_SHORT).show();
            }
        }
        return true;
    }

What should I do next?

1 vote
85 views

Hello,

I am using a candlestick chart for a financial application and I want to add the sign and price to the highest and lowest price bar that appears on the screen as in the attached image. As the chart is scrolled, the highest price and lowest price data and location should also change. how can I do that?

Best regards.

1 vote
79 views

Hello,

As you can see in the attached image, I’m using a Candlestick Chart for a financial application, but the gap between each bar on the chart is pretty small and it doesn’t look good.

I want to add a space between the bars but I couldn’t find how to do it. Can you help me?

Best regards.

1 vote
0 answers
82 views

Hi,

I am new to SciCharts and I am developing line chart with multiple line series with different colors. All line series have time span on X-axis and a double value on Y-axis. I need to show time ticks after specific interval for example i need to show tick after every 30 seconds or 1 minute or 3 minute. and may else.I have also took a look at Major Delta and Minor delta but i am confused and not properly using it . And also interval can be changed with at runtime like a user can select that they want to see X-axis time tick after every 30 second or 50 second or etc. Please can you give me and example for it. I hope for Quick repsonse.

    Date majorDelta = new Date(DateIntervalUtil.fromSeconds(1));
    Date minorDelta = new Date(DateIntervalUtil.fromSeconds(30));

DateAxis xAxis = sciChartBuilder.newDateAxis()
.withAutoRangeMode(AutoRange.Never)
.withSubDayTextFormatting(“mm:ss”)
.withMinorDelta(majorDelta)
.withMajorDelta(minorDelta)
.withAutoTicks(false)
.build();

Best Regards,

0 votes
152 views

In financial markets, there is a type of chart that is as follows.

I did not find this type of chart in SciChart.

Please help me how to draw this chart

1 vote
0 answers
126 views

I need to create a multi line chart along with a seekbar at bottom and If user moves the seekbar then line chart should show a tooltip or marker view at that point.

1 vote
145 views

Hi
I want to access the SciTrader application source so that I can implement the features I need by checking it.

Please guide me to access this source code

1 vote
306 views

Hello. Some time ago we started receiving very interesting crash reports in our crashlytics about scichart init. We can’t reproduce it by ourselves, but there are a lot of samples from our users with different devices and with different Android OS.

Fatal Exception: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.**.**-WqNyhtp24SkSTYz13S2c3w==/base.apk"],nativeLibraryDirectories=[/data/app/com.**.**-WqNyhtp24SkSTYz13S2c3w==/lib/arm64, /system/lib64]]] couldn't find "libcore.so"
       at java.lang.Runtime.loadLibrary0(Runtime.java:1067)
       at java.lang.Runtime.loadLibrary0(Runtime.java:1007)
       at java.lang.System.loadLibrary(System.java:1667)
       at com.scichart.core.utility.NativeLibraryHelper.tryLoadLibrary(SourceFile:2)
       at com.scichart.core.utility.NativeLibraryHelper.tryLoadCoreLibrary(:2)
       at com.scichart.core.licensing.Credentials.<clinit>(SourceFile:1)
       at com.scichart.core.licensing.Credentials.setRuntimeLicenseKey(SourceFile:1)
       at com.scichart.charting.visuals.SciChartSurface.setRuntimeLicenseKey()

At our last build we added

abi {
    enableSplit = false
}

This action reduced the number of crashes, but it still happens:

Fatal Exception: java.lang.UnsatisfiedLinkError: dlopen failed: couldn't map "/mnt/asec/com.**.**-2/base.apk!/lib/armeabi-v7a/libcore.so" segment 1: Permission denied
       at java.lang.Runtime.loadLibrary0(Runtime.java:989)
       at java.lang.System.loadLibrary(System.java:1567)
       at com.scichart.core.utility.NativeLibraryHelper.tryLoadLibrary(SourceFile:2)
       at com.scichart.core.utility.NativeLibraryHelper.tryLoadCoreLibrary(SourceFile)
       at com.scichart.core.licensing.Credentials.<clinit>(SourceFile:1)
       at com.scichart.core.licensing.Credentials.setRuntimeLicenseKey(SourceFile:1)
       at com.scichart.charting.visuals.SciChartSurface.setRuntimeLicenseKey(SourceFile)

Have there been similar problems?

0 votes
0 answers
402 views

Hello!

The legend is in horizontal orientation, and Im displaying multiple series.

When the legend is inside the chart (default config), Im able to scroll left or right to see all available series.

But when it is moved outside the chart, it is no longer scrollable. Checkboxes are still clickable to show or hide series.

Thinking it might be something interfering with the scroll gesture, I started a new project following the Android tutorial. It still stops working as soon as I move it outside the chart.

Is this a bug, or am I missing something?

This does not happens on iOS.

Regards

XML Layout
`

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <LinearLayout
        android:layout_margin="30dp"
        android:id="@+id/chart_layout"
        android:layout_width="match_parent"
        android:layout_height="500dp"
        android:orientation="horizontal"/>

    <com.scichart.charting.visuals.legend.SciChartLegend
        android:id="@+id/legend"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:layout_margin="10dp"/>
</LinearLayout>

`

Legend and LegendModifier config

    final SciChartLegend legend = findViewById(R.id.legend);
    legend.setLegendOrientation(Orientation.HORIZONTAL);

    final LegendModifier legendModifier = new LegendModifier(legend, false);

    surface.getChartModifiers().add(legendModifier);
0 votes
0 answers
344 views

Does Scichart Android have a function to import 3D models (.obj, .cad…)?

0 votes
373 views

Hi there!

I wonder if SciChart has support (for Android & iOS) for the following chart types (see attached example chart images):

  • Timeline chart (where events are mapped onto a linear timeline)

  • “Equation” chart (which shows an ellipsis, based on a mathematical equation)

  • Polar chart (as line, column and stacked bars)

If yes, how do I implement these chart types!?

Thanks in advance!

/Jacob

1 vote
395 views

I have been following the tutorials and in Tutorial 3 I have come to the point where data is added to an XyDataSeries and need to know the proper way to do it in Kotlin on Android (not Java).

In MainActivity.kt I have:

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

    SciChartSurface.setRuntimeLicenseKey("...");

    val surface = SciChartSurface(this)

    val chartLayout = findViewById<View>(R.id.chart_layout) as LinearLayout

    chartLayout.addView(surface)

    SciChartBuilder.init(this)

    val sciChartBuilder = SciChartBuilder.instance()

    val xAxis = sciChartBuilder.newNumericAxis()
        .withAxisTitle("X Axis Title")
        .withVisibleRange(-5.0, 15.0)
        .build();

    val yAxis = sciChartBuilder.newNumericAxis()
        .withAxisTitle("Y Axis Title")
        .withVisibleRange(0.0, 100.0)
        .build();

    val textAnnotation = sciChartBuilder.newTextAnnotation()
        .withX1(5.0)
        .withY1(55.0)
        .withText("Hello World!")
        .withHorizontalAnchorPoint(HorizontalAnchorPoint.Center)
        .withVerticalAnchorPoint(VerticalAnchorPoint.Center)
        .withFontStyle(20f, ColorUtil.White)
        .build()

    val chartModifiers = sciChartBuilder.newModifierGroup()
        .withPinchZoomModifier().withReceiveHandledEvents(true).build()
        .withZoomPanModifier().withReceiveHandledEvents(true).build()
        .build()

    // App crashes at the following point
    val lineData: XyDataSeries<Int, Double> = sciChartBuilder.newXyDataSeries(
        Int::class.java,
        Double::class.java
    ).build()

    // I presume this is also incorrect
    val scatterData: XyDataSeries<Int, Double> = sciChartBuilder.newXyDataSeries(
        Int::class.java,
        Double::class.java
    ).build()

    for (i in 0..999) {
        lineData.append(i, Math.sin(i * 0.1))
        scatterData.append(i, Math.cos(i * 0.1))
    }

    val lineSeries = sciChartBuilder.newLineSeries()
        .withDataSeries(lineData)
        .withStrokeStyle(ColorUtil.LightBlue, 2f, true)
        .build();

    surface.renderableSeries.add(lineSeries);

    Collections.addAll(surface.yAxes, yAxis);
    Collections.addAll(surface.xAxes, xAxis);
    Collections.addAll(surface.annotations, textAnnotation);
    Collections.addAll(surface.chartModifiers, chartModifiers);

}

}

The app crashes at the lines “val lineData: XyDataSeries<Int, Double> = sciChartBuilder.newXyDataSeries( …”. What is wrong here?

1 vote
499 views

Hi,

We want to implement averaging of data points when you zoom into a graph.
We have implemented pre-processed average plotting – and this works for certain cases.
Basically, you see less point markers when you zoom out a certain level (point marker will show averaged points), and when you zoom in, point markers show increased sample points – in real time.

  1. Is there a an API that enables this capability and determining when the averaging happens (at what zoom level) and the averaging period (to average values over)?
  2. If there isn’t an API, can you point us in the right direction to implement such feature?
1 vote
0 answers
419 views

Hi,

I have annotation, users can it drag and drop. But for it first need select this annotation and after drag it(with re-touching).
How to immediately drag annotation(without re-touching)?

Thanks in advance.

Regards,
Batyr

1 vote
532 views

I am working on Android Application and I have a different requirement where I want to display all the values String array on XAxis, I don’t want to use DateAxis nor VisibleRange function, also no value should be hidden as we are not giving any zoom-in and out functionality in our app.

I would really appreciate if you can please assist with this

Thanks
Regard

1 vote
0 answers
469 views

Hello,

I am working on an android application for the tablet view I need to write and show XAxis with the following information

  1. 1 Day => need to show 24 XAxis ticks with 1 hour each with a difference of 10 means e.g 10:10, 11:10, 12:10 and so on
  2. 3 Day => need to show 4 XAxis ticks like if that covers 72 hours by showing the date
  3. 1 Month => need to show 30 XAxis ticks with a date, 1 day each

the difficulty I m facing is that I m not finding any starting point to do the above things properly, I tried DateSeries but the date is showing dynamically and there is no how to define starting and endpoint

Thanks
Regards

0 votes
611 views

Hi,

I would like to display all the hours of the day in X axis e.g 01 to 24 and I haven’t been able to achieve it yet, I tried use date delta but I couldn’t figure out how it really works, could you please share a code snippet or some example.

Thanks

  • Anas Iqbal asked 6 months ago
  • last active 6 months ago
1 vote
689 views

Hello, we are developing a finance application that contains sciChart. Our main chart and optionally RSI, MACD etc. There are indicators. I want the user to screenshot and share the graph and the indicators, but I’m having trouble doing this. Although I tried more than one way for this, I encountered different problems in all of them.
First of all, I take a screenshot with the createBitmap and Canvas method of the Layout where my graphics are located, but the graphic contents are not visible in the screenshot content.
As the second method, I tried the exportToBitmap method in sciChart, but here I only take a screenshot of 1 chart, I cannot take a screenshot of a graph + RSI + MACD at the same time. As another problem, the opening, closing, high, etc. of the parity on the chart. The texts containing the data are not visible in the screenshot.

Below I will share the screenshots I took with both the first method and the second method, the image on the phone at that moment, and the codes I used.
What I wanted to use was to take a screenshot of more than one graph and the data on it at the same time as in the first method. How can I do that?

Method 1

Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
            view.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    view.draw(canvas);

Method 2

surface.exportToBitmap()
0 votes
570 views

Hi Team,

When we except this feature

1 vote
608 views

We are testing your Android Example application, andwe are trying to find out the capabilities of the 2d Heatmap chart.

I have found in your documentation that you have the “Heatmap Texture Filtering” feature, anyways I am not able to set it as true in the heatmap plot. (found on the [WPF Heatmap Chart documentation][1 )

Is this feature disabled in Android Charts?

I am trying to enable this filtering, but the modification on your example app does not compile.

I have already tried to modify other stuff on your heatmap example chart, and it works, but particularly in our application we need as a must this kind of feature. It will be finally something that helps us to decide if your SciChart library meet our requirement.

Thanks for your attention,

1 vote
594 views

Hi.

We want to use your Android Chart library in our project. I’m getting familiar with it and I don’t totally gets how to implement Scrolling Realtime (FIFO) Line Chart.

What we want to do: our copmany wants an app that will represent the data on the line charts from their sensors. I need real-time (FIFO) representation from 1 to 16 charts in RecyclerView.

The guide here doesn’t cover the whole implementation (for example, we add data to XyDataSeries, but where to add these series to surface is not indicated). And link to github is not working also.

Do you have some example code or documentation regarding it?

0 votes
815 views

Hi Guys,

I am implementing the column chart, but the xAxis value is duplicate when I scroll the chart. Please see the images attachment.

Here are the piece of code, and wandering what cause this, thx!

package com.refinitiv.android.presentation.view.chart.stack

import android.content.Context
import android.util.AttributeSet
import android.view.Gravity
import android.widget.FrameLayout
import androidx.core.content.ContextCompat
import androidx.core.content.res.ResourcesCompat

import com.scichart.charting.ClipMode
import com.scichart.charting.Direction2D
import com.scichart.charting.model.ChartModifierCollection
import com.scichart.charting.model.dataSeries.IXyDataSeries
import com.scichart.charting.modifiers.AxisDragModifierBase
import com.scichart.charting.modifiers.XAxisDragModifier
import com.scichart.charting.modifiers.ZoomPanModifier
import com.scichart.charting.numerics.labelProviders.NumericLabelFormatter
import com.scichart.charting.numerics.labelProviders.NumericLabelProvider
import com.scichart.charting.numerics.tickProviders.NumericTickProvider
import com.scichart.charting.visuals.SciChartSurface
import com.scichart.charting.visuals.axes.AutoRange
import com.scichart.charting.visuals.axes.AxisTickLabelStyle
import com.scichart.charting.visuals.axes.IAxis
import com.scichart.charting.visuals.renderableSeries.IRenderableSeries
import com.scichart.charting.visuals.renderableSeries.StackedColumnRenderableSeries
import com.scichart.charting.visuals.renderableSeries.VerticallyStackedColumnsCollection
import com.scichart.core.framework.UpdateSuspender
import com.scichart.core.model.DoubleValues
import com.scichart.core.model.IntegerValues
import com.scichart.data.model.DoubleRange
import com.scichart.drawing.canvas.RenderSurface
import com.scichart.drawing.common.FontStyle
import com.scichart.drawing.common.PenStyle
import com.scichart.drawing.common.SolidPenStyle
import com.scichart.extensions.builders.SciChartBuilder
import timber.log.Timber
import java.util.*
import kotlin.math.roundToInt

private const val GROW_BY: Double = 0.0

private const val MAX_VISIBLE_COLUMNS = 11
private const val MIN_VISIBLE = -0.5

class StackColumnChartView @JvmOverloads constructor(
context: Context,
attrs: AttributeSet?,
defStyleAttr: Int = 0,
defStyleRes: Int = 0
) : FrameLayout(context, attrs, defStyleAttr, defStyleRes) {

private val chart = SciChartSurface(context)


private val typefaceSemibold =
    ResourcesCompat.getFont(context, R.font.proxima_nova_fin_semibold)

private val tickFontStyle = FontStyle(
    typefaceSemibold,
    resources.getDimension(R.dimen.chart_axis_text_size),
    getColorFromAttrOrDefault(R.attr.chartAxisTextColor, R.color.dove_grey),
    true
)

private val majorGridLineAndTickStyle: PenStyle = SolidPenStyle(
    getColorFromAttrOrDefault(R.attr.cardViewItemDividerBackground, R.color.desert_storm_50),
    true,
    resources.getDimension(R.dimen.chart_grid_line_thickness),
    null
)

var xAxisLabelList = emptyList<String>()
var yAxisLabelList = mutableListOf("0%", "20%", "40%", "60%", "80%", "100%")
var dataList: List<List<Double>> = emptyList()
private lateinit var xAxisData: List<Double>

init {
    chart.renderSurface = RenderSurface(context)
    val params = LayoutParams(
        LayoutParams.MATCH_PARENT,
        LayoutParams.MATCH_PARENT
    )
    chart.layoutParams = params

    addView(chart)
    chart.theme = R.style.SciChart
}

fun buildChart() {
    Timber.tag("CHART").d("CURVE CHART View build chart")
    SciChartBuilder.init(context)
    val sciChartBuilder: SciChartBuilder = SciChartBuilder.instance()
    xAxisData = xAxisLabelList.mapIndexed { index, _ ->
        index.toDouble()
    }
    val xAxis = initXAxis(sciChartBuilder)
    val yAxis = initYAxis(sciChartBuilder)
    val dataSeries = initDataSeries(context, sciChartBuilder)

    val surfaceChartModifiers: ChartModifierCollection = chart.chartModifiers
    val zoomPanModifier = ZoomPanModifier()
    zoomPanModifier.direction = Direction2D.XDirection
    zoomPanModifier.clipModeX = ClipMode.ClipAtExtents
    zoomPanModifier.clipModeY = ClipMode.None
    zoomPanModifier.zoomExtentsY = false

    val dragModifier = XAxisDragModifier()
    dragModifier.dragMode = AxisDragModifierBase.AxisDragMode.Pan
    surfaceChartModifiers.add(dragModifier)

    UpdateSuspender.using(chart) {
        chart.xAxes.clear()
        chart.yAxes.clear()
        chart.annotations.clear()
        chart.renderableSeries.clear()

        Collections.addAll(chart.xAxes, xAxis)
        Collections.addAll(chart.yAxes, yAxis)
        Collections.addAll(chart.renderableSeries, dataSeries)

        Collections.addAll(chart.chartModifiers, zoomPanModifier)
        Collections.addAll(chart.chartModifiers, dragModifier)
    }
}

fun clearChart() {
    UpdateSuspender.using(chart) {
        chart.xAxes.clear()
        chart.yAxes.clear()
        chart.annotations.clear()
        chart.renderableSeries.clear()
    }
}

private fun initDataSeries(
    context: Context, sciChartBuilder: SciChartBuilder
): IRenderableSeries {

    val verticalCollection = VerticallyStackedColumnsCollection()

    val seriesList = dataList.mapIndexed { _, xValue ->
        val series: IXyDataSeries<Double, Double> = sciChartBuilder.newXyDataSeries(
            Double::class.javaObjectType,
            Double::class.javaObjectType
        ).build()
        for (i in xAxisData.indices) {
            series.append(xAxisData[i], xValue[i])
        }
        series
    }


    val result = seriesList.mapIndexed { index, series ->
        val color: Int = if (index < colorList.size) {
            ContextCompat.getColor(context, colorList[index])
        } else {
            ContextCompat.getColor(context, colorList[index % colorList.size])
        }
        val stack: StackedColumnRenderableSeries =
            sciChartBuilder.newStackedColumn().withDataSeries(series).withFillColor(color)
                .withStrokeStyle(
                    ContextCompat.getColor(
                        context, R.color.chatline_white
                    ), 0.2F
                )
                .build()
        stack
    }

    verticalCollection.addAll(result)
    verticalCollection.dataPointWidth = 0.4
    verticalCollection.isOneHundredPercent = true
    return verticalCollection
}

private fun initXAxis(
    sciChartBuilder: SciChartBuilder
): IAxis {

    val horizontalAxisTickLabelStyle = AxisTickLabelStyle(
        Gravity.CENTER_VERTICAL,
        0,
        context.resources.getDimensionPixelSize(R.dimen.pe_firm_investment_profile_chat_view_label_margin_vertical),
        0,
        0,
    )
    val visibleMin = if (xAxisLabelList.size > MAX_VISIBLE_COLUMNS) {
        (xAxisLabelList.size - MAX_VISIBLE_COLUMNS).toDouble()
    } else {
        MIN_VISIBLE
    }
    val xVisibleRange = DoubleRange(visibleMin, (xAxisLabelList.size + MIN_VISIBLE))
    return sciChartBuilder
        .newNumericAxis()
        .build()
        .apply {
            axisTickLabelStyle = horizontalAxisTickLabelStyle
            tickLabelStyle = tickFontStyle
            drawMinorGridLines = false
            drawMinorTicks = false
            drawMajorTicks = false
            drawMajorBands = false
            drawMajorGridLines = false
            autoFitMarginalLabels = true
            visibleRange = xVisibleRange

// tickProvider = XTickProvider(xAxisData)
labelProvider =
NumericLabelProvider(FirmProfileDateAxisLabelFormatter(xAxisLabelList))
growBy = DoubleRange(GROW_BY, GROW_BY)
maxAutoTicks = xAxisLabelList.size
}
}

private fun initYAxis(
    sciChartBuilder: SciChartBuilder
): IAxis {
    val verticalAxisTickLabelStyle = AxisTickLabelStyle(
        Gravity.CENTER_HORIZONTAL,
        0,
        0,
        0,
        0
    )

    return sciChartBuilder
        .newNumericAxis()
        .build()
        .apply {
            axisTickLabelStyle = verticalAxisTickLabelStyle
            drawMajorGridLines = true
            minimalZoomConstrain = 0.0
            tickLabelStyle = tickFontStyle
            majorTickLineStyle = majorGridLineAndTickStyle
            majorGridLineStyle = majorGridLineAndTickStyle
            labelProvider = FirmProfileYAxisLabelProvider(yAxisLabelList)
            autoRange = AutoRange.Always
            maxAutoTicks = yAxisLabelList.size
            growBy = DoubleRange(GROW_BY, GROW_BY)
        }
}

fun dispose() {
    SciChartBuilder.dispose()
}

class XTickProvider(private val xAxisData: List<Double>) : NumericTickProvider() {
    override fun updateCullingPriorities(
        cullingPriorities: IntegerValues?,
        majorTicks: DoubleValues?
    ) {
        super.updateCullingPriorities(cullingPriorities, majorTicks)
    }
    override fun updateTicks(minorTicks: DoubleValues?, majorTicks: DoubleValues?) {

// super.updateTicks(minorTicks, majorTicks)
xAxisData.forEach {
majorTicks?.add(it)
}
}

    override fun getMajorTickIndex(tick: Double): Int {
        Timber.tag("StackColumn").v("getMajorTickIndex-:${tick}")
        return super.getMajorTickIndex(tick)
    }

    override fun shouldUpdateTicks(): Boolean {
       val should = super.shouldUpdateTicks()
        Timber.tag("StackColumn").v("shouldUpdateTicks-:${should}")
        return should
    }

    override fun isFirstMajorTickEven(majorTicks: DoubleValues?): Boolean {
        return super.isFirstMajorTickEven(majorTicks)
    }
}

class FirmProfileDateAxisLabelFormatter(private val labelTitles: List<String>) :
    NumericLabelFormatter() {

    private var lastFormatLabel = ""

    override fun formatLabel(p0: Double): CharSequence {
        Timber.tag("StackColumn").v("formatLabel-:${p0}")
        if (labelTitles[p0.toInt()] == lastFormatLabel) {
            return ""
        }
        return labelTitles[p0.toInt()]
    }

    override fun formatCursorLabel(p0: Double): CharSequence {

        return formatLabel(p0)
    }

}

class FirmProfileYAxisLabelProvider(private val labelList: List<String>) :
    NumericLabelProvider() {
    var index = 0
    override fun formatLabel(p0: Double): CharSequence {
        if (labelList.isEmpty()) {
            return ""
        }
        val title = labelList[index]
        index += 1
        index = if (index < labelList.size) {
            index
        } else {
            0
        }
        return title
    }

    override fun formatCursorLabel(p0: Double): CharSequence {
        return formatLabel(p0)
    }
}

companion object {
    val colorList = mutableListOf(
        R.color.chatline_blue_ribbon,
        R.color.chatline_black,
        R.color.chatline_teal,
        R.color.chatline_butterfly,
        R.color.chatline_olive,
        R.color.chatline_grenadier,
        R.color.chatline_rain_forest,
        R.color.chatline_cerise_red,
        R.color.chatline_scorpion,
        R.color.chatline_jelly_bean,
        R.color.chatline_genoa,
        R.color.chatline_brown_rust,
        R.color.chatline_torea_bay,
        R.color.chatline_saddle_brown,
        R.color.chatline_victoria,
        R.color.chatline_sherpa_blue,
        R.color.chatline_oregon,
        R.color.chatline_kaitoke_green,
        R.color.chatline_maroon_flush,
        R.color.chatline_tundora,
        R.color.chatline_chathams_blue,
        R.color.chatline_eden,
        R.color.chatline_mule_fawn,
    )
}

}

  • Steve Shan asked 8 months ago
  • last active 7 months ago
0 votes
0 answers
716 views

Hello, I am developing a finance application and I am using candlestick chart here. I also use moving average and various indicators together with the chart. As the data I have shown in the chart is updated, I reflect them on the screen. My chart and indicators are updated as new data comes in, but I cannot update the value and name data that I have shown on the top left side of the chart for the indicator. Every time the data is updated, I want to take the last value of the indicator along with my graph and indicators and update it in the top left part. How can I do that? I will share with you the code of the indicator creation and indicator creation parts that I have used for the moving average. At the same time, this problem exists not only for indicators, but also for graphs. The open, close, high, low data of the chart are not updated when they should be updated every time the data comes in. I’ve added a screenshot to better explain the problem.

0 votes
699 views

Hello, I was using version 4.2 before but I updated to version 4.4 last week. I am using candlestick chart in my project and show the chart in various time frames. These time periods include 1 day, 1 hour, 15 minutes, 1 minute and so on. Before the update to v4.4, when 1 time zone was selected, the example would show 09:00, 10:00, and on the 5 minute graph it would show as 09:00, 09:05, 09:10. After updating, it shows 09:00 instead of 09:05 when 5 minutes is selected, and 09:00 instead of 09:19 when 1 minute is selected. I want the date data that I added to the chart to be displayed as it is. I am also attaching screenshots for better understanding.
How can I fix this error I got? There is no problem with the data I have shown in the chart, it sounds as I want, but when I transfer it to the chart, it does not show as I want.

0 votes
747 views

Hello, I was using version 4.2 before, but today I updated to version 4.4. I was using the updateCurrentPoint function in the CustomRolloverModifier in my project, but this function has changed in version 4.3. How can I use the updateCurrentPoint function in version 4.4?

0 votes
668 views

Hello, I am a new developer who continues to develop scichart. In the currentPoint (or its name may be different) created after clicking in the developed application, the changes made on the graphic (changing the data, changing the graphic type, zooming in or out of the graphic, etc.), leaving these points where they are, breaks the graphic. In these cases, I need to either remove the point or make it move with the graph. how can I do that? I am developing with java. I uploaded the problem I encountered as a gif, you can understand it more clearly when you watch it.

0 votes
665 views

Hi. For example, I set yAxis VisibleRange(-100, 100), but I need to see only 3 gridlines: -100, 0 and 100. I cannot find how to remove other gridlines.

1 vote
775 views

Hello,
I was following the tutorial for building my first Chart for adroid.
I Download the newes version SciChart_ Android_v4.4.* and copy the lib in my FIles.
Since this went way to quick i opend the lib and it was empty, no .aar files.
I downloadet the adroid .zip again and still no .aar files in lib.
Then i downloadet the 4.3 version and there they are: aar files!

My Question: how do i get those files of the latest version?

0 votes
0 answers
842 views

Can I get a scroll offset of a chart and scroll a horizontal recycler simultaneously with the same offset?

0 votes
944 views

Hi,

When using splinerenderable series, there visual issues (as if the data points are unsorted) with the spline line at certain zoom levels.
If you zoom in past a certain point, the spline line corrects itself, showing that the data points are sorted in order.
See the attached screenshot and project replicating the issue.
This issue may be related to other issues currently active:

0 votes
0 answers
831 views

Hi,

Our current chart setup is as follows: 2 charts, each with 2 line series (~23k data points per line series – datetime [x-axis], double[y-axis]), data is added to the line series in real-time and all data is retained (never deleted). Both charts share a motion events group (pinchzoom, rollover, xaxisdrag, zoomextents).
Of the 2 Line series, each line series can be removed or added to the chart at random.

We noticed that an index out of bounds error occurs if you quickly add/remove a new line series (plus data) and start zooming in/out quickly, as much as possible. – easiest way to replicate issue. In some cases, if you zoom in with an already loaded lines series, the error still comes up.
See attached txt logs.

I considered completely disabling chart interaction (by disabling chart modifiers) before adding or removing a line series, however, this caused other issues such as vertical annotations being removed.

0 votes
819 views

Hi,

Our current chart setup is as follows: 2 charts, each with 2 line series (~23k data points per line series – datetime [x-axis], double[y-axis]), data is added to the line series in real-time and all data is retained (never deleted). Both charts share a motion events group (pinchzoom, rollover, xaxisdrag, zoomextents).

If you zoom in to the furthest zoom possible, the chart/app starts to act extremely sluggish, then crashes eventually. – see attached txt file for logs.

Questions:

  1. Is there a method to tackle this from a performance perspective and still enable zooming to the utmost limit?
  2. If 1.) is not possible, is it possible to enact a zoom limit on the charts?

Other solution suggestions are welcome.

0 votes
1k views

We are working on an android based ELD application. We are looking for a ELD graph. Is it possible to accomplish this using SCICHART?

  • saiesh raut asked 10 months ago
  • last active 6 months ago
0 votes
953 views

Is there an API of extension that would enable time-based average (e.g. average 10 minutes worth of data points) down-sampling of measurements?
Or is resorting to pre-filter provided data points the only option?

0 votes
757 views

I have a strange padding in the end of the chart. I set drawLabels false and added annotations to it. And added makerPoint for the last point. So everything is clipped by this padding.

You can see this on the screenshot in the attachment

0 votes
796 views

I want to format my labels after tapping a radio button. But the major labels with the “dd mm” pattern and the minor labels with the “HH:mm” pattern. If I check the radio button in the radio button group the labels will format with the others formats. It works with TradeChartAxisLabelProvider but I can’t handle it with my own formats. What I have to use?

0 votes
834 views

What is the best way to form List with my formatted dates in the View Model and just put in my implementation of CategoryLabelProviderBase?

Can an AxisBase implementation help me in this case?

0 votes
0 answers
851 views

I have a strange margin in the end of the chart. But AxisMarkerAnnotations don’t have this margin. Only series and HorizontalLineAnnotation. Look at the picture:

enter image description here

Where did it come from?

And maybe I can add margins to max and mix values?

0 votes
911 views

I am looking to customize the shape of the rollover vertical line (Android) – particularly, make it dashed and potentially increase the line thickness.
I saw that this is possible for WPF (https://www.scichart.com/questions/wpf/crosshair-cursormodifier-color-and-thickness), but was not able to find any information for Android.

Is this styling capable in Android?

0 votes
835 views

I have a chart and a radio button group. When I click a button an app will load new data. And it works ok. But sometimes my chart doesn’t scroll to start when data is changed. I changed visibleRange for it. It can be fixed with postDelayed method but is there any good way to fix it?

My code:

enter link description here

0 votes
992 views

I get an error when I scroll my chart. I didn’t change my code. It worked yesterday and it doesn’t today. I just started getting:

VisibleRange was restored to its last valid value. The range class com.scichart.data.model.DoubleRange (Min = 0.0, Max = 307.0) either is not valid or it doesn’t satisfy MinimalZoomConstrain or MaximumZoomConstrain. To provide fallback value please override AxisCore#coerceVisibleRange(IRange) method

I tried to make my MinimalZoomConstrain to zero and MaximumZoomConstrain to maximum. But it didn’t help me. I tried override coerceVisibleRange but I don’t kwon how

My code when chart points received in attachment

1 vote
0 answers
946 views

Hello there,
I am testing your 3D chart by creating single chart and adding multi data on condition.Whenever adding new data I clear previous.
surfaceCommon3D.getRenderableSeries().clear();
surfaceCommon3D.getChartModifiers().clear();

Issues is when first data add tooltip working properly and after adding new data then checking tooltip value Application will crash and show this error:
java.lang.ArrayIndexOutOfBoundsException: index
at com.scichart.core.model.DoubleValues.get(SourceFile:6)
at com.scichart.charting3d.visuals.renderableSeries.hitTest.MeshSeriesInfo3D.update(SourceFile:10)

here is my tooltip snippet code:
TooltipModifier3D t1 = new TooltipModifier3D();
t1.setReceiveHandledEvents(true);
t1.setExecuteOnPointerCount(1);
surfaceCommon3D.getChartModifiers().add(new ModifierGroup3D(t1));

SurfaceMeshRenderableSeries3D snippet code:
rs = sciChart3DBuilder.newSurfaceMeshSeries3D()
.withDataSeries(ds)
.withDrawMeshAs(DrawMeshAs.SolidWireframe)
.withStroke(blackColor)
.withContourStroke(stroke)
.withStrokeThicknes(1f)
.withDrawSkirt(false)
.withMeshColorPalette(new GradientColorPalette(colors, stops))
.withMetadataProvider(new SurfaceMeshMetadataProvider3D(pnl_time_spot_Z_3d, xSize, “common3DChartLayout”))
.withSeriesInfoProvider(new CustomSeriesInfo3DProvider1(fromModel, xSize))
.build();

UpdateSuspender.using(surfaceCommon3D, new Runnable() {
@Override
public void run() {
surfaceCommon3D.setCamera(camera);
surfaceCommon3D.setXAxis(xAxis);
surfaceCommon3D.setYAxis(yAxis);
surfaceCommon3D.setZAxis(zAxis);
surfaceCommon3D.getRenderableSeries().add(rs);
surfaceCommon3D.invalidate();
}
});

I am Requesting you to solved my issues ASAP.
Thanks in Advance

0 votes
0 answers
901 views

Hello there,
I am testing your 3d chart in demo project but I added X,Y and Z data, also added tool-tip to check the value

final TooltipModifier3D tooltipModifier3D = new TooltipModifier3D();
tooltipModifier3D.setIsEnabled(true);
tooltipModifier3D.setMarkerPlacement(Placement.TopRight);
tooltipModifier3D.setExecuteOnPointerCount(1);
tooltipModifier3D.setCrosshairMode(CrosshairMode.Lines);
surfaceCommon3D.getChartModifiers().add(tooltipModifier3D);

And also implement custom tool-tip UI.

The Issues is when I hover cursor on chart it not showing exact position on tool-tip. I attach SS png you can check it,
SS showing my cursor is on position x=6 but on tooltip it showing x=2.Waiting for your reply.

Thanks You

0 votes
941 views

I want to make my labels positions in the centre of axis (y axis which is transparent). Only three labels have to be showed. On the same height with the min, max and actual points. How can I achieve this.

enter image description here

0 votes
972 views

I looked at this answer for WPF.

https://stackoverflow.com/questions/10231627/convert-pixels-to-cm-in-wpf

Is there a similar option to get the dimensions in mm on Android?

0 votes
0 answers
1k views

Hello there,
I am testing SciChartSurface3D its working fine but when I do some changes with height in chart layout it not render properly and getting error:

E/emuglGLESv2_enc: a vertex attribute index out of boundary is detected. Skipping corresponding vertex attribute. buf=0xeb0966f0
E/emuglGLESv2_enc: Out of bounds vertex attribute info: clientArray? 1 attribute 1 vbo 129 allocedBufferSize 672 bufferDataSpecified? 1 wantedStart 0 wantedEnd 889012

I am requesting to please check this error.

0 votes
0 answers
892 views

Hello

Is it possible do detect taps/selection/click over Axis Titles?

Thanks!

0 votes
0 answers
893 views

Hello

Is it possible do detect taps/selection/click over the PointMarkers?

Thanks!

0 votes
954 views

Hello,

I am having trouble determining the parameters to pass to ModifierTouchEventArgs when overriding GestureModifierBase in the latest SciChart versions. I can’t figure out where to get the now required source and target values – the super class returns null when asked.. Code snippet below…

class MyCustomGestureModifier() : GestureModifierBase() {
    override fun onLongPress(e: MotionEvent?) {
    super.onLongPress(e)

    /* This worked in SciChart v4.2.0.4557, but no longer does due to ModifierTouchEvents now requiring source and target
    val args = ModifierTouchEventArgs()
    args.e = e
    args.isHandled = false
    args.isMaster = true
    args.isInSourceBounds = true
     */

    // create touch event args for rollover modifier
    // 4.3.0.4646 wants additional parameters for source and target
    val orgEvent = originalTouchEvent // this is null, so where should we get source and target?
    val args = ModifierTouchEventArgs(orgEvent.source, orgEvent.target)
    args.e = e
    args.isHandled = false

    rolloverModifier.onTouch(args)

    args.clear()
}

In case it helps, the above snippet is based on a previous discussion at https://www.scichart.com/questions/android/separating-rollover-tootips-and-pan-drag

Thank you.

  • C Bolton asked 1 year ago
  • last active 1 year ago
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