Java Code Examples for com.github.mikephil.charting.data.LineDataSet#setCubicIntensity()

private LineData createChartData(int color) {
    List<Entry> entries = new ArrayList<>(1024);
    entries.add(new Entry(-2, 0));
    entries.add(new Entry(-1, 0));

    chartDataSet = new LineDataSet(entries, null);

    chartDataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
    chartDataSet.setCubicIntensity(0.1f);
    chartDataSet.setDrawCircles(false);
    chartDataSet.setDrawFilled(true);
    chartDataSet.setLineWidth(0f);
    chartDataSet.setColor(color);
    chartDataSet.setFillColor(color);
    chartDataSet.setFillAlpha(255);
    chartDataSet.setDrawHorizontalHighlightIndicator(false);
    chartDataSet.setDrawVerticalHighlightIndicator(false);
    chartDataSet.setFillFormatter(new CubicLineSampleFillFormatter());

    chartData = new LineData(chartDataSet);

    chartData.setDrawValues(false);

    return chartData;
}
 

/**
 * Style char lines (type, color, etc.).
 *
 * @param entries list of entries.
 * @return line data chart.
 */
private LineData styleChartLines(List<Entry> entries) {
    // Set styles
    LineDataSet lineDataSet = new LineDataSet(entries, "Recording");
    lineDataSet.setMode(LineDataSet.Mode.HORIZONTAL_BEZIER);
    lineDataSet.setCubicIntensity(0.2f);
    lineDataSet.setDrawValues(false);
    lineDataSet.setDrawCircles(false);
    lineDataSet.setLineWidth(1.8f);
    lineDataSet.setColor(ContextCompat.getColor(context, R.color.colorAccent));
    if (((int) lineDataSet.getYMax()) != 0) {
        lineDataSet.setDrawFilled(true);
        lineDataSet.setFillAlpha(255);
        // Fix bug with vectors in API < 21
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT){
            Drawable drawable = ResourcesCompat.getDrawable(context.getResources(),
                    R.drawable.chart_fade, null);
            lineDataSet.setFillDrawable(drawable);
        } else{
            lineDataSet.setFillColor(ContextCompat.getColor(context, R.color.colorPrimary));
        }
    }
    return new LineData(lineDataSet);
}
 

/**
 * 曲线赋值与设置
 *
 * @param context   上下文
 * @param yDataList y轴数据
 * @return LineData
 */
private static LineData setLineData(Context context, List<Entry> yDataList,
                                    String curveLable) {
    // y轴的数据集合
    LineDataSet lineDataSet = new LineDataSet(yDataList, curveLable);
    // 用y轴的集合来设置参数
    lineDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    // 不显示坐标点的数据
    lineDataSet.setDrawValues(false);
    // 显示坐标点的小圆点
    lineDataSet.setDrawCircles(false);
    // 定位线
    lineDataSet.setHighlightEnabled(false);
    // 线宽
    lineDataSet.setLineWidth(1f);
    // 显示的圆形大小
    lineDataSet.setCircleSize(2f);
    // 显示颜色
    lineDataSet.setColor(context.getApplicationContext().getResources().getColor(R.color.chart_color));
    // 圆形的颜色
    lineDataSet.setCircleColor(context.getApplicationContext().getResources().getColor(R.color.chart_color));
    // 高亮的线的颜色
    lineDataSet.setHighLightColor(context.getApplicationContext().getResources()
            .getColor(R.color.chart_color));
    // 设置填充的颜色

    Drawable drawable = ContextCompat.getDrawable(context, R.drawable.fade_color);
    lineDataSet.setFillDrawable(drawable);

    // 设置坐标点为空心环状
    lineDataSet.setDrawCircleHole(false);
    // lineDataSet.setValueTextSize(9f);
    lineDataSet.setFillAlpha(30);
    // 设置显示曲线和X轴围成的区域阴影
    lineDataSet.setDrawFilled(true);
    // 坐标轴在左侧
    lineDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    // 设置每条曲线图例标签名
    // lineDataSet.setLabel("标签");
    lineDataSet.setValueTextSize(14f);
    // 曲线弧度（区间0.05f-1f，默认0.2f）
    lineDataSet.setCubicIntensity(0.2f);
    // 设置为曲线显示,false为折线
    lineDataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
    lineDataSet.setValues(yDataList);
    // y轴的数据
    LineData lineData = new LineData(lineDataSet);
    return lineData;
}
 

private LineDataSet makeLineData(List<GlucoseData> glucoseDataList) {
    String title = "History";
    if (glucoseDataList.get(0).isTrendData()) title = "Trend";

    LineDataSet lineDataSet = new LineDataSet(new ArrayList<Entry>(), title);
    for (GlucoseData gd : glucoseDataList) {
        float x = convertDateToXAxisValue(gd.getDate());
        float y = gd.glucose();
        lineDataSet.addEntryOrdered(new Entry(x, y));
        /*
        Log.d(LOG_ID, String.format("%s: %s -> %s: %f -> %f",
                title,
                mFormatDateTime.format(new Date(gd.date)),
                mFormatDateTime.format(new Date(convertXAxisValueToDate(x))),
                x,
                y)
        );
        */
    }

    lineDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    lineDataSet.setDrawCircles(true);
    lineDataSet.setCircleRadius(2f);

    lineDataSet.setDrawCircleHole(false);
    lineDataSet.setDrawValues(false);

    lineDataSet.setDrawHighlightIndicators(true);

    int baseColor = PLOT_COLORS[mPlotColorIndex % NUM_PLOT_COLORS][0];
    int softColor = Color.argb(150, Color.red(baseColor), Color.green(baseColor), Color.blue(baseColor));
    int hardColor = PLOT_COLORS[mPlotColorIndex % NUM_PLOT_COLORS][1];
    if (glucoseDataList.get(0).isTrendData()) {
        lineDataSet.setColor(hardColor);
        lineDataSet.setLineWidth(2f);

        lineDataSet.setCircleColor(softColor);

        lineDataSet.setMode(LineDataSet.Mode.LINEAR);
    } else {
        lineDataSet.setColor(softColor);
        lineDataSet.setLineWidth(4f);

        lineDataSet.setCircleColor(hardColor);

        lineDataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
        lineDataSet.setCubicIntensity(0.1f);
    }

    return lineDataSet;
}
 

private void setData(int count, float range) {

        ArrayList<String> xVals = new ArrayList<String>();
        for (int i = 0; i < count; i++) {
            xVals.add((1990 +i) + "");
        }

        ArrayList<Entry> vals1 = new ArrayList<Entry>();

        for (int i = 0; i < count; i++) {
            float mult = (range + 1);
            float val = (float) (Math.random() * mult) + 20;// + (float)
                                                           // ((mult *
                                                           // 0.1) / 10);
            vals1.add(new Entry(val, i));
        }
        
        // create a dataset and give it a type
        LineDataSet set1 = new LineDataSet(vals1, "DataSet 1");
        set1.setDrawCubic(true);
        set1.setCubicIntensity(0.2f);
        //set1.setDrawFilled(true);
        set1.setDrawCircles(false); 
        set1.setLineWidth(1.8f);
        set1.setCircleRadius(4f);
        set1.setCircleColor(Color.WHITE);
        set1.setHighLightColor(Color.rgb(244, 117, 117));
        set1.setColor(Color.WHITE);
        set1.setFillColor(Color.WHITE);
        set1.setFillAlpha(100);
        set1.setDrawHorizontalHighlightIndicator(false);
        set1.setFillFormatter(new FillFormatter() {
            @Override
            public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
                return -10;
            }
        });
        
        // create a data object with the datasets
        LineData data = new LineData(xVals, set1);
        data.setValueTypeface(tf);
        data.setValueTextSize(9f);
        data.setDrawValues(false);

        // set data
        mChart.setData(data);
    }
 

@Override
void dataSetConfig(IDataSet<Entry> dataSet, ReadableMap config) {
    LineDataSet lineDataSet = (LineDataSet) dataSet;

    ChartDataSetConfigUtils.commonConfig(lineDataSet, config);
    ChartDataSetConfigUtils.commonBarLineScatterCandleBubbleConfig(lineDataSet, config);
    ChartDataSetConfigUtils.commonLineScatterCandleRadarConfig(lineDataSet, config);
    ChartDataSetConfigUtils.commonLineRadarConfig(lineDataSet, config);

    // LineDataSet only config
    if (BridgeUtils.validate(config, ReadableType.Number, "circleRadius")) {
        lineDataSet.setCircleRadius((float) config.getDouble("circleRadius"));
    }
    if (BridgeUtils.validate(config, ReadableType.Boolean, "drawCircles")) {
        lineDataSet.setDrawCircles(config.getBoolean("drawCircles"));
    }
    if (BridgeUtils.validate(config, ReadableType.Boolean, "drawCubic")) {
        lineDataSet.setDrawCubic(config.getBoolean("drawCubic"));
    }
    if (BridgeUtils.validate(config, ReadableType.Number, "drawCubicIntensity")) {
        lineDataSet.setCubicIntensity((float) config.getDouble("drawCubicIntensity"));
    }
    if (BridgeUtils.validate(config, ReadableType.String, "circleColor")) {
        lineDataSet.setCircleColor(Color.parseColor(config.getString("circleColor")));
    }
    if (BridgeUtils.validate(config, ReadableType.Array, "circleColors")) {
        lineDataSet.setCircleColors(BridgeUtils.parseColors(config.getArray("circleColors")));
    }
    if (BridgeUtils.validate(config, ReadableType.String, "circleColorHole")) {
        lineDataSet.setCircleColorHole(Color.parseColor(config.getString("circleColorHole")));
    }
    if (BridgeUtils.validate(config, ReadableType.Boolean, "drawCircleHole")) {
        lineDataSet.setDrawCircleHole(config.getBoolean("drawCircleHole"));
    }
    if (BridgeUtils.validate(config, ReadableType.Map, "dashedLine")) {
        ReadableMap dashedLine = config.getMap("dashedLine");
        float lineLength = 0;
        float spaceLength = 0;
        float phase = 0;

        if (BridgeUtils.validate(dashedLine, ReadableType.Number, "lineLength")) {
            lineLength = (float) dashedLine.getDouble("lineLength");
        }
        if (BridgeUtils.validate(dashedLine, ReadableType.Number, "spaceLength")) {
            spaceLength = (float) dashedLine.getDouble("spaceLength");
        }
        if (BridgeUtils.validate(dashedLine, ReadableType.Number, "phase")) {
            phase = (float) dashedLine.getDouble("phase");
        }

        lineDataSet.enableDashedLine(lineLength, spaceLength, phase);
    }
}
 

/**
 * Configure bees chart and the data.
 *
 * @param recordsList list of records.
 */
private void setupBeesChart(List<Record> recordsList) {
    // Setup data
    referenceTimestamp = recordsList.get(0).getTimestamp().getTime() / 1000;
    Record[] records = recordsList.toArray(new Record[recordsList.size()]);
    List<Entry> entries = new ArrayList<>();
    int maxNumBees = 0;
    for (Record record : records) {
        // Convert timestamp to seconds and relative to first timestamp
        long timestamp = record.getTimestamp().getTime() / 1000 - referenceTimestamp;
        int numBees = record.getNumBees();
        entries.add(new Entry(timestamp, numBees));
        // Get max num of bees
        if (numBees > maxNumBees) {
            maxNumBees = numBees;
        }
    }
    lastTimestamp = (long) entries.get(entries.size() - 1).getX();
    // Style char lines (type, color, etc.)
    LineDataSet lineDataSet = new LineDataSet(entries, getString(R.string.num_bees));
    lineDataSet.setMode(LineDataSet.Mode.HORIZONTAL_BEZIER);
    lineDataSet.setCubicIntensity(0.2f);
    lineDataSet.setDrawValues(false);
    lineDataSet.setDrawCircles(false);
    lineDataSet.setLineWidth(1.8f);
    lineDataSet.setColor(ContextCompat.getColor(getContext(), R.color.colorAccent));
    // General setup
    beesChart.setDrawGridBackground(false);
    beesChart.setDrawBorders(false);
    beesChart.setViewPortOffsets(80, 40, 80, 50);
    beesChart.getDescription().setEnabled(false);
    beesChart.getLegend().setEnabled(false);
    beesChart.setTouchEnabled(true);
    beesChart.setDragEnabled(false);
    beesChart.setScaleEnabled(false);
    beesChart.setPinchZoom(false);
    BeesMarkerView mv = new BeesMarkerView(getContext(), R.layout.recording_bees_marker_vew);
    mv.setChartView(beesChart);
    beesChart.setMarker(mv);
    beesChart.setNoDataText(getString(R.string.no_flight_act_data_available));
    // X axis setup
    IAxisValueFormatter xAxisFormatter = new HourAxisValueFormatter(referenceTimestamp);
    XAxis xAxis = beesChart.getXAxis();
    xAxis.setValueFormatter(xAxisFormatter);
    xAxis.setDrawGridLines(false);
    xAxis.setDrawAxisLine(false);
    xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
    xAxis.setTextColor(Color.BLACK);
    // Y axis setup
    YAxis leftAxis = beesChart.getAxisLeft();
    leftAxis.setAxisMaximum(maxNumBees > 40 ? maxNumBees + 2 : 40);
    leftAxis.setAxisMinimum(0);
    leftAxis.setDrawGridLines(true);
    leftAxis.setDrawAxisLine(false);
    YAxis rightAxis = beesChart.getAxisRight();
    rightAxis.setAxisMaximum(maxNumBees > 40 ? maxNumBees + 2 : 40);
    rightAxis.setAxisMinimum(0);
    rightAxis.setDrawGridLines(true);
    rightAxis.setDrawAxisLine(false);
    // Add data
    beesChart.setData(new LineData(lineDataSet));
}
 

@Override
    public void onViewCreated(View view, Bundle savedInstanceState)
    {
        CombinedChart chart = (CombinedChart) view.findViewById(R.id.progress_chart);
        this.recordings = new RecordingList(this.getContext());

        if (this.recordings != null)
        {
            List<String> dates = this.recordings.getDates();

            CombinedData data = new CombinedData(dates);

            LineDataSet dataSet = new LineDataSet(this.recordings.getGraphEntries(), getResources().getString(R.string.progress));
            LineData lineData = new LineData(dates, dataSet);
            BarData barData = new BarData(dates, GraphLayout.getOverallRange(this.getContext(), dates.size()));

            dataSet.setDrawCubic(true);
            dataSet.enableDashedLine(10, 10, 0);
            dataSet.setLineWidth(3f);
            dataSet.setDrawValues(false);

            dataSet.setCircleColor(getResources().getColor(R.color.canvas_dark));
            dataSet.setColor(getResources().getColor(R.color.canvas_dark));
            dataSet.setCircleSize(5f);

            dataSet.setCubicIntensity(0.05f);
            dataSet.setAxisDependency(YAxis.AxisDependency.LEFT);

            data.setData(lineData);
            data.setData(barData);
            chart.setData(data);
            GraphLayout.FormatChart(chart);

            chart.setTouchEnabled(true);
//            chart.setScaleEnabled(true);
            chart.setPinchZoom(true);
//            chart.setDoubleTapToZoomEnabled(true);

            chart.setDrawValueAboveBar(false);
            chart.setDrawOrder(new DrawOrder[]{
                    DrawOrder.BAR,
                    DrawOrder.BUBBLE,
                    DrawOrder.CANDLE,
                    DrawOrder.LINE,
                    DrawOrder.SCATTER
            });
        }

        super.onViewCreated(view, savedInstanceState);
    }
 

private void setupChart(List<String> labels, List<Entry> downData, List<Entry> totalData) {
    LineDataSet totalLineDataSet = new LineDataSet(totalData, "Uploaded");
    totalLineDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    totalLineDataSet.setDrawCircles(false);
    totalLineDataSet.setCubicIntensity(0.1f);
    totalLineDataSet.setMode(LineDataSet.Mode.HORIZONTAL_BEZIER);
    totalLineDataSet.setDrawFilled(true);
    totalLineDataSet.setDrawValues(false);
    totalLineDataSet.setColor(ContextCompat.getColor(this, R.color.data_usage_chart_upload));
    totalLineDataSet.setFillColor(ContextCompat.getColor(this, R.color.data_usage_chart_upload));
    totalLineDataSet.setFillAlpha(255);

    LineDataSet downLineDataSet = new LineDataSet(downData, "Downloaded");
    downLineDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    downLineDataSet.setDrawCircles(false);
    downLineDataSet.setCubicIntensity(0.1f);
    downLineDataSet.setMode(LineDataSet.Mode.HORIZONTAL_BEZIER);
    downLineDataSet.setDrawFilled(true);
    downLineDataSet.setDrawValues(false);
    downLineDataSet.setColor(ContextCompat.getColor(this, R.color.data_usage_chart_download));
    downLineDataSet.setFillColor(ContextCompat.getColor(this, R.color.data_usage_chart_download));
    downLineDataSet.setFillAlpha(255);

    List<ILineDataSet> downAndUp = new ArrayList<>();
    downAndUp.add(totalLineDataSet);
    downAndUp.add(downLineDataSet);

    LineData dataUsageLineData = new LineData(labels, downAndUp);
    chart.getAxisRight().setEnabled(true);
    chart.getAxisRight().setDrawAxisLine(true);
    chart.getAxisRight().setDrawGridLines(false);
    chart.getAxisRight().setDrawLabels(false);
    chart.getAxisLeft().setStartAtZero(true);
    chart.setData(dataUsageLineData);
    chart.setDescription("");
    chart.setScaleXEnabled(true);
    chart.setScaleYEnabled(false);
    chart.setPinchZoom(true);
    chart.setDoubleTapToZoomEnabled(true);
    chart.getData().setHighlightEnabled(false);
    chart.getAxisLeft().setValueFormatter((value, axis) -> value + " MB");
    // maximum viewable area is one day
    chart.setScaleMinima(downData.size() / 288f, 1f);
    // initially show the most recent 24 hours
    chart.centerViewTo(Math.max(downData.size() - 144, 0), chart.getYChartMax() / 2, YAxis.AxisDependency.LEFT);
    chart.setVisibility(View.VISIBLE);
    progressLayout.setVisibility(View.GONE);
}