Category: Android | Fast, Native Chart Controls for WPF, iOS, Android and Xamarin

0 votes

21 views

Android SciChartLegend xamarin ios android

Hello.

I am working on Xamarin Android project with C#. Since having a legend within the chart causes problems with too many axis’ (no scrolling is available thus selecting different series in a legend becomes unavailable) and having a legend outside of chart area, anywhere we desire, would be of a preference, is there a tutorial on how could I achieve such a thing? Our project needs this functionality for both Android and iOS.

Would be grateful if anyone could help out with this issue.

Thank you in advance!

pauzu asked 3 days ago
last active 2 days ago

0 votes

1 answer

33 views

ClipMode on Y axis?

Android #clip

Hi…..
I could be able to set clip mode for X axis in ZoomPanModifier(), In the same way I would like to set clip mode Y axis but I couldn’t.
Is there is a way to do that?

sci chart asked 7 days ago
last active 2 days ago

0 votes

4 answers

44 views

SC_DROID-476

Android

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

Cheers

TJ Cook asked 2 weeks ago
last active 1 week ago

0 votes

1 answer

46 views

When I import .jar library after importing Scichart .aar libraries my .jar library generates an error

Android lib

When I import my own .jar library after importing Scichart .aar libraries(core and data) my own .jar library generates an error(Error: findLibrary returned null). How can I overcome that error.

hamza kiani asked 2 weeks ago
last active 2 weeks ago

0 votes

0 answers

48 views

On Meizu X8 mobile phone, why does the axle label display change line? How to solve it?

Android

On Meizu X8 mobile phone, why does the axle label display change line? How to solve it?

IAxis yAxis = sciChartBuilder.newNumericAxis().withAxisAlignment(AxisAlignment.Left).withIsLabelCullingEnabled(false).withGrowBy(0.05d, 0.05d).withDrawMajorBands(false).withMaxAutoTicks(5).withDrawMajorTicks(true).withDrawMinorTicks(false).withAutoRangeMode(AutoRange.Always).build();
    yAxis.setTextFormatting(" 0.0");
    yAxis.setTickProvider(new CalendatTickProvider(6));
    Collections.addAll(surface.getYAxes(), yAxis);

Huang haiyan asked 3 weeks ago

0 votes

1 answer

44 views

How can we append finite data in AnimatingLineChartFragment(Android)?

Android line chart animation

Hi,
I am working on Scichart android appliication.By default it is appending infinite Yvalues which are randomly generated one by one. I want to append finite data in AnimatingLineChartFragment() but it will not accept it, like when I append arrayList of yValue it will generate an error and ask to add Collections.singleton(t) on 1st argument .Afterwards when I run the programme it works fine but when Fifo Capacity ends it starts to draw last line again and again. Plz help me that how can Animate Lines on my data?

hamza kiani asked 3 weeks ago
last active 3 weeks ago

0 votes

1 answer

63 views

Why (Tutorial 09 - Linking Multiple Charts (Android)) is not working properly?

Android multichart

Why Scichart for Android Tutorial 09 – Linking Multiple Charts is not working properly?
The Upper surface is working properley but lower surface is not rendering data.
https://www.scichart.com/documentation/android/v2.x/webframe.html#Tutorial%2009%20-%20Linking%20Multiple%20Charts.html

hamza kiani asked 4 weeks ago
last active 3 weeks ago

0 votes

1 answer

77 views

How can I handle Onclick event on Scichart surface?

Android onclick

I am working on Scichart Android application .I am using two Scichart surfaces on a single activity ,I want to handle click event on scichart surface so that,whenever I click on surface it will start a new activity which contains a single Scichart.

hamza kiani asked 4 weeks ago
last active 4 weeks ago

0 votes

3 answers

80 views

How can I make Hours of Service chart in Android?

Android HOS Graph

I am developing an Android application for ELD. I have also explored the graph options SciChart is offering but I could not see a very similar graph to the image I have attached.
Please help me in choosing an appropriate type graph. It would be more helpful if you could name type of the graph I have attached.
enter image description here

Obaid Rehman asked 4 weeks ago
last active 2 weeks ago

0 votes

1 answer

69 views

Weird behavior recyclerview recycle

Android

Hi!

I’ve put a couple of charts in a recyclerview based on this example. I’m using a custome theme that’s basically just a white background and grey gridlines. When the charts get recycled (after scrolling them out of view and then back) they start to look weird. Does anyone know what is causing this behavior? I’ve tried two different versions of SciChart, screenshots attached below. Additionally I used to only get some random black squares like this in version 2.0.0.1654, but I can’t seem to reproduce that now.

Chart normally:
Regular Chart

After recycle in version 2.0.0.1654:
After recycle version 2.0.0.1654

After recycle in version 2.5.0.2540:
After recycle version 2.5.0.2540

Konrad Morzkowski asked 1 month ago
last active 1 month ago

0 votes

0 answers

81 views

My candle stick chart does not display its candles correctly. What is the problem?

Android

I’ve made a candle stick chart.
It is displayed correctly on data of 1 to 23 minute in time series.
But for data above 23 minute in time series, it is not displayed correctly.
I attach a screen shot.
I’ve looked through all the data on chart with debugging, the data are all correct.
But the candles of the chart is not consistent to the data.
For the data below 23 minute in time series, it is all right.
I could not find the problem from my code.
The following is a part of my code for setting data on the chart.
private void setChartData(SmChartData chart_data) {
try {
if (chart_data == null)
return;

        chartType = chart_data.chartType;
        chartCycle = chart_data.cycle;


        final IRange visibleRange = surface.getXAxes().get(0).getVisibleRange();

        if (getSeriesType() == SmSeriesType.CandleStick || getSeriesType() == SmSeriesType.Ohlc) {
            if (ohlcDataSeries != null) {
                ohlcDataSeries.clear();
                ohlcDataSeries.append(chart_data.getDate(), chart_data.getOpen(), chart_data.getHigh(), chart_data.getLow(), chart_data.getClose());
                visibleRange.setMinMaxDouble(0, ohlcDataSeries.getCount() - 1);


            }
        } else {
            if (xyDataSeries != null) {
                xyDataSeries.clear();
                xyDataSeries.append(chart_data.getDate(), chart_data.getClose());
                visibleRange.setMinMaxDouble(0, xyDataSeries.getCount() - 1);
            }
        }

        // 주문의 위치를 다시 찾아 준다.
        refreshOrderAnnotation();
    } catch (Exception e) {
        String msg = e.getMessage();
    }
}

What is the problem?
Please let me know why It is not display its candles correctly for some time series values.
Thank you very much.

Shiwan Sung asked 1 month ago
last active 1 month ago

0 votes

1 answer

110 views

How to properly update chart

Android

Hi,

every time we update the chart, the lines jump around and it seems we need to have a delay before calling zoomExtents() for it to work properly – but even with 500ms delay, zoomExtents still does not work always (see 0:27 of below video- what helped was manually moving the chart). We want a smooth transition when changing timescale. My guess is we are misusing the library somehow, but after thorough reading through the docs we could still not fix this.

Here is a video showcasing this problem:

https://screencast-o-matic.com/watch/cqiUjxOkV6

Here is the code that updates the surface. Basically we clear the Renderable Series of surface before we show new data. Full code where we make charts (on each update) is seen here:

// OHLC Chart Data
ohlcData.append(ohlcSeries.getDateData(), ohlcSeries.getOpenData(), ohlcSeries.getHighData(), ohlcSeries.getLowData(), ohlcSeries.getCloseData());

// Bollinger Upper Band
XyDataSeries<Date, Double> bollUpper = sciChartBuilder.newXyDataSeries(Date.class, Double.class).withSeriesName("BBU").build();
bollUpper.append(ohlcSeries.getDateData(), upperBB_data);
BaseRenderableSeries seriesBBU = sciChartBuilder.newLineSeries().withDataSeries(bollUpper).withStrokeStyle(Color.rgb(70,130,180), 1f).withYAxisId(PRICES).build();
seriesBBU.setClipToBounds(true);

//* ... some more lines and indicators built here ... */

// clear surface on update
if(!surfaceOhlc.getRenderableSeries().isEmpty())
    surfaceOhlc.getRenderableSeries().clear(); 

// create series
seriesMA.setIsVisible(SharedPreferencesInstance.getBoolean("advanced_chart_show_ma", true));
seriesEMA.setIsVisible(SharedPreferencesInstance.getBoolean("advanced_chart_show_ema", true));
seriesBBU.setIsVisible(SharedPreferencesInstance.getBoolean("advanced_chart_show_boll", true));
seriesBBL.setIsVisible(SharedPreferencesInstance.getBoolean("advanced_chart_show_boll", true));
seriesBBM.setIsVisible(SharedPreferencesInstance.getBoolean("advanced_chart_show_boll", true));

surfaceOhlc.getRenderableSeries().add(sciChartBuilder.newCandlestickSeries().withDataSeries(ohlcData).withSeriesInfoProvider(new CustomOHLCSeriesInfoProvider()).withYAxisId(PRICES).build()); // todo : setClipToRounds(true)
surfaceOhlc.getRenderableSeries().add(seriesBBU);
surfaceOhlc.getRenderableSeries().add(seriesBBL);
surfaceOhlc.getRenderableSeries().add(seriesBBM);
surfaceOhlc.getRenderableSeries().add(seriesEMA);
surfaceOhlc.getRenderableSeries().add(seriesMA);

surfaceOhlc.getAnnotations().add(annPrice);

Primoz asked 2 months ago
last active 2 months ago

0 votes

0 answers

121 views

How can I update xAxis labels?

Android

Hello.
I am working on a stock chart with socket.
When received a new data, it is added to the chart,
but the labels of xAxis do not update their datetimes.
And I touch the surface of the chart,
then the labels of xAxis are updated.
What is wrong?
I attach some parts of my code.
Please let me know the correct way that I can update automatically the labels of x axis when a new data is added to.

The function for the x Axis creation
void setYAxis() {
yAxis = sciChartBuilder.newNumericAxis().withGrowBy(0d, 0.1d).withAxisAlignment(AxisAlignment.Right).withAutoRangeMode(AutoRange.Always).build();

    PenStyle tickStyle = new SolidPenStyle(_chartSetting.tickStyle, true, 2, null);
    BrushStyle bandStyle = new SolidBrushStyle(_chartSetting.bandStyle);
    PenStyle gridlineStyle2 = new SolidPenStyle(_chartSetting.gridlineStyle2, true, 2, null);
    // PenStyle gridlineStyle = new SolidPenStyle(_chartSetting.gridlineStyle, true, 1, new float[]{10, 10});
    PenStyle gridlineStyle = new SolidPenStyle(_chartSetting.gridlineStyle, true, 1, null);

    yAxis.setAxisBandsStyle(bandStyle);
    yAxis.setDrawMajorBands(true);
    //yAxis.setMinorTickLineStyle(tickStyle);
    yAxis.setMajorTickLineStyle(tickStyle);


    yAxis.setMajorGridLineStyle(gridlineStyle);
    yAxis.setMinorGridLineStyle(gridlineStyle2);
    String yFormat = "%.2f";
    if (chartData != null) {
        SmSymbolManager symbolManager = SmSymbolManager.getInstance();
        SmSymbol symbol = symbolManager.findSymbol(chartData.symbolCode);
        yFormat = "%.";
        if (symbol != null)
            yFormat += Integer.toString(symbol.decimal);
        else
            yFormat += Integer.toString(2);
        yFormat += "f";
    }
    yAxis.setLabelProvider(new NumericLabelProviderEx(yFormat));

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

    if (_style == "mock_left" || _style == "mock_right") {
        yAxis.setVisibility(View.GONE);
    }

    if (_style == "mock_main") {
        yAxis.setVisibility(View.VISIBLE);
        yAxis.setAxisAlignment(AxisAlignment.Left);
    }
}

The callback function for the new data arrival.
private synchronized Action1 onNewPrice() {
return new Action1() {
@Override
public void execute(final PriceBar price) {
if (symbolCode.compareTo(price.getSymbolCode()) != 0 ||
lastPrice == null ||
lastPrice.getDate() == price.getDate())
return;

            DateFormat dateFormat = new SimpleDateFormat("yyyy-mm-dd hh:mm:ss");
            String strDate = dateFormat.format(price.getDate());

            //Log.d("TAG", "onNewPrice:  -> " + price.getSymbolCode() + "::" + strDate);

            if (getSeriesType() == SmSeriesType.CandleStick || getSeriesType() == SmSeriesType.Ohlc) {
                ((IOhlcDataSeries) dataSeries).append(price.getDate(), price.getOpen(), price.getHigh(), price.getLow(), price.getClose());
            } else {
                ((IXyDataSeries) dataSeries).append(price.getDate(), price.getClose());
            }

            IRange dataRange = xAxis.getDataRange();

            final IRange visibleRange = surface.getXAxes().get(0).getVisibleRange();
            if (visibleRange.getMaxAsDouble() > dataSeries.getCount()) {
                visibleRange.setMinMaxDouble(visibleRange.getMinAsDouble() + 1, visibleRange.getMaxAsDouble() + 1);
                xAxis.updateAxisMeasurements();
            }

            getActivity().runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    ohlcAxisMarker.setBackgroundColor(price.getClose() >= price.getOpen() ? STOKE_UP_COLOR : STROKE_DOWN_COLOR);
                }
            });

            //smaAxisMarker.setY1(smaLastValue);
            ohlcAxisMarker.setY1(price.getClose());

            lastPrice = price;
        }
    };
}

Shiwan Sung asked 2 months ago

0 votes

1 answer

185 views

How can I compile the source code?

Android

Hi! I’ve purchased your products including source code. I need to modify some of your code and have tried in many ways, but I have not compiled your source codes successfully. I am working on it on my Mac Osx, using android studio version of Android Gradle Plugin Version 3.1.0 and Gradle Version 4.4. I’ve got these errors, but I could not find any hints to solve this problem from your QnA site and google. The messages are following. Please let me know how to compile your source code properly. The source codes I have is SciChart_Android_v2.5.0.2540_SDK. Thank you for your good products and service.

Build command failed.

Error while executing process /Users/shiwansung/Library/Android/sdk/ndk-bundle/ndk-build with arguments {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/Android.mk NDK_APPLICATION_MK=/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/Application.mk APP_ABI=x86_64 NDK_ALL_ABIS=x86_64 NDK_DEBUG=1 APP_PLATFORM=android-19 NDK_OUT=/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/build/intermediates/ndkBuild/debug/lib -j4 /Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/build/intermediates/ndkBuild/debug/obj/local/x86_64/libdata.so}

[x86_64] Compile++ : data <= SciListUtil.cpp

[x86_64] Compile++ : data <= arrayOperations.cpp

[x86_64] Compile++ : data <= NativePointResamplerFactory.cpp

[x86_64] Compile++ : data <= resampling.cpp

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

MAKE_NATIVE(double, double)

^

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:23:96: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMinMax(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex,jint viewportWidth, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: variable has incomplete type ‘void’

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:23:16: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMinMax(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex,jint viewportWidth, jboolean isCategoryData)\

:359:1: note: expanded from here

Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double

^

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: expected ‘;’ after top level declarator

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:23:98: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMinMax(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex,jint viewportWidth, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:28:104: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void JNICALL Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ResampleWithoutReduction(JNIEnv *env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:33:96: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMax(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex, jint viewportWidth, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:38:96: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMin(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex, jint viewportWidth, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:43:96: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMid(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex, jint viewportWidth, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:48:96: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ReducePointsMinMaxUnevenlySpaced(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex, jdouble minXInclusive, jdouble maxXInclusive, jint viewportWidth, jboolean isCategoryData)\

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:59:1: error: pasting formed ‘Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_double##’, an invalid preprocessing token

/Users/shiwansung/Downloads/SciChart_Android_v2.5.0.2540_Source/data/src/main/jni/NativePointResamplerFactory.cpp:53:96: note: expanded from macro ‘MAKE_NATIVE’

JNIEXPORT void Java_com_scichart_data_numerics_pointresamplers_NativePointResamplerFactory_##TX####TY##ResampleInClusterMode(JNIEnv* env, jclass, jobject resampledSeries, j##TX##Array xColumn, j##TY##Array yColumn, jint startIndex, jint endIndex, jint viewportWidth, jboolean isCategoryData)\