Java 类com.github.mikephil.charting.data.LineData 实例源码

private LineDataSet prepareInitData(@NonNull LineChart chart, @NonNull List<Entry> entries) {
    final LineDataSet set = new LineDataSet(entries, "Accuracy");

    set.setMode(LineDataSet.Mode.HORIZONTAL_BEZIER);
    set.setAxisDependency(YAxis.AxisDependency.LEFT);
    set.setLineWidth(2F);
    set.setDrawCircleHole(false);
    set.setDrawCircles(false);
    set.setHighlightEnabled(false);
    set.setDrawFilled(true);

    final LineData group = new LineData(set);
    group.setDrawValues(false);

    chart.setData(group);

    return set;
}

protected LineData generateLineData() {

    ArrayList<ILineDataSet> sets = new ArrayList<ILineDataSet>();

    LineDataSet ds1 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "sine.txt"), "Sine function");
    LineDataSet ds2 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "cosine.txt"), "Cosine function");

    ds1.setLineWidth(2f);
    ds2.setLineWidth(2f);

    ds1.setDrawCircles(false);
    ds2.setDrawCircles(false);

    ds1.setColor(ColorTemplate.VORDIPLOM_COLORS[0]);
    ds2.setColor(ColorTemplate.VORDIPLOM_COLORS[1]);

    // load DataSets from textfiles in assets folders
    sets.add(ds1);
    sets.add(ds2);

    LineData d = new LineData(sets);
    d.setValueTypeface(tf);
    return d;
}

private LineData generateLineData() {

        LineData d = new LineData();

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

        for (int index = 0; index < itemcount; index++)
            entries.add(new Entry(index + 0.5f, getRandom(15, 5)));

        LineDataSet set = new LineDataSet(entries, "Line DataSet");
        set.setColor(Color.rgb(240, 238, 70));
        set.setLineWidth(2.5f);
        set.setCircleColor(Color.rgb(240, 238, 70));
        set.setCircleRadius(5f);
        set.setFillColor(Color.rgb(240, 238, 70));
        set.setMode(LineDataSet.Mode.CUBIC_BEZIER);
        set.setDrawValues(true);
        set.setValueTextSize(10f);
        set.setValueTextColor(Color.rgb(240, 238, 70));

        set.setAxisDependency(YAxis.AxisDependency.LEFT);
        d.addDataSet(set);

        return d;
    }

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_linechart_noseekbar);

        mChart = (LineChart) findViewById(R.id.chart1);
        mChart.setOnChartValueSelectedListener(this);
        mChart.setDrawGridBackground(false);
        mChart.getDescription().setEnabled(false);

        // add an empty data object
        mChart.setData(new LineData());
//        mChart.getXAxis().setDrawLabels(false);
//        mChart.getXAxis().setDrawGridLines(false);

        mChart.invalidate();
    }

private void removeLastEntry() {

        LineData data = mChart.getData();

        if (data != null) {

            ILineDataSet set = data.getDataSetByIndex(0);

            if (set != null) {

                Entry e = set.getEntryForXValue(set.getEntryCount() - 1, Float.NaN);

                data.removeEntry(e, 0);
                // or remove by index
                // mData.removeEntryByXValue(xIndex, dataSetIndex);
                data.notifyDataChanged();
                mChart.notifyDataSetChanged();
                mChart.invalidate();
            }
        }
    }

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_colored_lines);

    mCharts[0] = (LineChart) findViewById(R.id.chart1);
    mCharts[1] = (LineChart) findViewById(R.id.chart2);
    mCharts[2] = (LineChart) findViewById(R.id.chart3);
    mCharts[3] = (LineChart) findViewById(R.id.chart4);

    mTf = Typeface.createFromAsset(getAssets(), "OpenSans-Bold.ttf");

    for (int i = 0; i < mCharts.length; i++) {

        LineData data = getData(36, 100);
        data.setValueTypeface(mTf);

        // add some transparency to the color with "& 0x90FFFFFF"
        setupChart(mCharts[i], data, mColors[i % mColors.length]);
    }
}

private void setData() {

        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();

        RealmLineDataSet<RealmDemoData> set = new RealmLineDataSet<RealmDemoData>(result, "xValue", "yValue");
        set.setMode(LineDataSet.Mode.CUBIC_BEZIER);
        set.setLabel("Realm LineDataSet");
        set.setDrawCircleHole(false);
        set.setColor(ColorTemplate.rgb("#FF5722"));
        set.setCircleColor(ColorTemplate.rgb("#FF5722"));
        set.setLineWidth(1.8f);
        set.setCircleRadius(3.6f);

        ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
        dataSets.add(set); // add the dataset

        // create a data object with the dataset list
        LineData data = new LineData(dataSets);
        styleData(data);

        // set data
        mChart.setData(data);
        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
    }

private void setData(int count, float range) {

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

        for (int i = 0; i < count; i++) {
            float xVal = (float) (Math.random() * range);
            float yVal = (float) (Math.random() * range);
            entries.add(new Entry(xVal, yVal));
        }

        // sort by x-value
        Collections.sort(entries, new EntryXComparator());

        // create a dataset and give it a type
        LineDataSet set1 = new LineDataSet(entries, "DataSet 1");

        set1.setLineWidth(1.5f);
        set1.setCircleRadius(4f);

        // create a data object with the datasets
        LineData data = new LineData(set1);

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

private void bindActivityChart() {
    LineData lineData = generateActivityLineData();
    lineChart.setData(lineData);
    int maxYData = (int) (Math.ceil(lineData.getYMax()) + 7200);
    lineChart.getAxisLeft().setAxisMaximum(maxYData);
    long referenceTime = new DateTime(stats.endDate).minusDays(6).getMillis();

    lineChart.getXAxis()
            .setValueFormatter(new FormatUtils().getBarXAxisValueFormatterInstance(referenceTime));

    CustomMarkerView customMarkerView = new CustomMarkerView(context, R.layout.marker_view, referenceTime);
    lineChart.setMarker(customMarkerView);
    customMarkerView.setChartView(lineChart);

    lineChart.animateX(1500, Easing.EasingOption.Linear);
}

private LineData generateA1cData() {
    ArrayList<String> xVals = new ArrayList<>();
    ArrayList<Entry> yVals = new ArrayList<>();

    for (int i = 0; i < presenter.getA1cReadings().size(); i++) {
        float val = Float.parseFloat(presenter.getA1cReadings().get(i).toString());
        yVals.add(new Entry(val, i));
    }

    xVals.clear();
    for (int i = 0; i < presenter.getA1cReadingsDateTime().size(); i++) {
        String date = presenter.convertDate(presenter.getA1cReadingsDateTime().get(i));
        xVals.add(date + "");
    }

    // create a data object with the datasets
    return new LineData(xVals,
            generateLineDataSet(yVals, getResources().getColor(R.color.glucosio_fab_HB1AC)));
}

private LineData generateKetonesData() {
    List<String> xVals = new ArrayList<>();
    List<Entry> yVals = new ArrayList<>();

    for (int i = 0; i < presenter.getKetonesReadings().size(); i++) {
        float val = Float.parseFloat(presenter.getKetonesReadings().get(i).toString());
        yVals.add(new Entry(val, i));
    }

    xVals.clear();
    for (int i = 0; i < presenter.getKetonesReadingsDateTime().size(); i++) {
        String date = presenter.convertDate(presenter.getKetonesReadingsDateTime().get(i));
        xVals.add(date + "");
    }

    // create a data object with the datasets
    return new LineData(xVals,
            generateLineDataSet(yVals, getResources().getColor(R.color.glucosio_fab_ketones)));
}

private LineData generateWeightData() {
    List<String> xVals = new ArrayList<>();
    List<Entry> yVals = new ArrayList<>();

    for (int i = 0; i < presenter.getWeightReadings().size(); i++) {
        float val = Float.parseFloat(presenter.getWeightReadings().get(i).toString());
        yVals.add(new Entry(val, i));
    }

    xVals.clear();
    for (int i = 0; i < presenter.getWeightReadingsDateTime().size(); i++) {
        String date = presenter.convertDate(presenter.getWeightReadingsDateTime().get(i));
        xVals.add(date + "");
    }

    // create a data object with the datasets
    return new LineData(xVals,
            generateLineDataSet(yVals, getResources().getColor(R.color.glucosio_fab_weight)));
}

private LineData generateCholesterolData() {
    List<String> xVals = new ArrayList<>();
    List<Entry> yVals = new ArrayList<>();

    for (int i = 0; i < presenter.getCholesterolReadings().size(); i++) {
        float val = Float.parseFloat(presenter.getCholesterolReadings().get(i).toString());
        yVals.add(new Entry(val, i));
    }

    xVals.clear();
    for (int i = 0; i < presenter.getCholesterolReadingsDateTime().size(); i++) {
        String date = presenter.convertDate(presenter.getCholesterolReadingsDateTime().get(i));
        xVals.add(date + "");
    }

    // create a data object with the datasets
    return new LineData(xVals,
            generateLineDataSet(yVals, getResources().getColor(R.color.glucosio_fab_cholesterol)));
}

/**
 * generates a random ChartData object with just one DataSet
 *
 * @return
 */

private LineData generateDataLine(float[] datas, String type) {

    ArrayList<Entry> entryList = new ArrayList<Entry>();
    for (int i = 0; i < datas.length; i++) {
        entryList.add(new Entry(i, datas[i]));
    }

    LineDataSet d1 = new LineDataSet(entryList, "DataSet :" + type);
    d1.setLineWidth(2.5f);
    Random r = new Random();
    d1.setHighLightColor(Color.rgb(r.nextInt(256), r.nextInt(256), r.nextInt(256)));
    d1.setDrawValues(false);

    ArrayList<ILineDataSet> sets = new ArrayList<>();
    sets.add(d1);

    return new LineData(sets);
}

private LineData buildLineData(List<Entry> seniors, List<Entry> engineer,
                               List<Entry> juniors, String[] jobTitles ){
    List<ILineDataSet> sets = new ArrayList<>();
    if (!seniors.isEmpty()){
        LineDataSet dSenior = buildLineDataSet(seniors, jobTitles[0]);
        sets.add(dSenior);
    }
    if (!engineer.isEmpty()){
        LineDataSet dEngineer = buildLineDataSet(engineer, jobTitles[1]);
        dEngineer.setColor(ColorTemplate.VORDIPLOM_COLORS[0]);
        dEngineer.setCircleColor(ColorTemplate.VORDIPLOM_COLORS[0]);
        sets.add(dEngineer);
    }
    if (!juniors.isEmpty()) {
        LineDataSet dJunior = buildLineDataSet(juniors, jobTitles[2]);
        dJunior.setColor(ColorTemplate.VORDIPLOM_COLORS[2]);
        dJunior.setCircleColor(ColorTemplate.VORDIPLOM_COLORS[2]);
        sets.add(dJunior);//add data
    }
    return  new LineData(sets);
}

private LineData generateLineData() {

        LineData d = new LineData();

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

        for (int index = 0; index < itemcount; index++)
            entries.add(new Entry(index + 0.5f, getRandom(15, 5)));

        LineDataSet set = new LineDataSet(entries, "Line DataSet");
        set.setColor(Color.rgb(240, 238, 70));
        set.setLineWidth(2.5f);
        set.setCircleColor(Color.rgb(240, 238, 70));
        set.setCircleRadius(5f);
        set.setFillColor(Color.rgb(240, 238, 70));
        set.setMode(LineDataSet.Mode.CUBIC_BEZIER);
        set.setDrawValues(true);
        set.setValueTextSize(10f);
        set.setValueTextColor(Color.rgb(240, 238, 70));

        set.setAxisDependency(YAxis.AxisDependency.LEFT);
        d.addDataSet(set);

        return d;
    }

private LineData getData(ArrayList<Entry> yVals) {
    LineDataSet set1 = new LineDataSet(yVals, "");
    set1.setLineWidth(1.45f);
    set1.setColor(Color.argb(240, 255, 255, 255));
    set1.setCircleColor(Color.WHITE);
    set1.setHighLightColor(Color.WHITE);
    set1.setFillColor(getResources().getColor(R.color.chartFilled));
    set1.setDrawCircles(false);
    set1.setDrawValues(false);
    set1.setDrawFilled(true);
    set1.setFillFormatter(new IFillFormatter() {
        @Override
        public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
            return priceChart.getAxisLeft().getAxisMinimum();
        }
    });

    LineData data = new LineData(set1);
    return data;
}

@BindingAdapter({"bind:items"})
public static void populateDiagram(LineChart view, List<SingleValue> items) {

    if (null == items || items.size() == 0) {
        return;
    }
    List<Entry> entries = new ArrayList<>();
    for (int i = 0; i < items.size(); i++) {
        final SingleValue item = items.get(i);
        final Entry entry = new Entry(i, (float) item.getValue(), item);
        entries.add(entry);
    }
    LineDataSet dataSet = new LineDataSet(entries, view.getContext().getString(R.string.currency_value));
    LineData lineData = new LineData(dataSet);

    formatXAxisLabels(view, items);
    view.setData(lineData);
    view.invalidate();
}

private void addEntry(String label, int value) {
    LineData data = chart.getData();
    if (data != null) {
        int index;
        if (label.equals(pm1Label)) {
            index = 0;
        } else if (label.equals(pm25Label)) {
            index = 1;
        } else {
            index = 2;
        }
        ILineDataSet set = data.getDataSetByIndex(index);

        if (set == null) {
            set = createSet(label);
            data.addDataSet(set);
        }

        data.addEntry(new Entry(set.getEntryCount(), value), index);
    }
}

@Override
public void update(ParticulateMatterSample sample) {
    if (!ready) {
        return;
    }
    LineData data = chart.getData();

    addEntry(pm1Label, sample.getPm1_0());
    addEntry(pm25Label, sample.getPm2_5());
    addEntry(pm10Label, sample.getPm10());

    data.notifyDataChanged();

    // let the chart know it's data has changed
    chart.notifyDataSetChanged();

    // limit the number of visible entries
    chart.setVisibleXRangeMaximum(120);

    // move to the latest entry
    chart.moveViewToX(data.getEntryCount());
}

/**
 * Adds the main data set for all times and the data set for the progression of record best
 * times among all times. The progression of best times are marked in a different color to the
 * main line of all time using circles lined with a dashed line. This will appear to connect
 * the lowest troughs along the main line of all times.
 *
 * @param chartData The chart data to which to add the new data sets.
 * @param allLabel  The label of the all-times line.
 * @param allColor  The color of the all-times line.
 * @param bestLabel The label of the best-times line.
 * @param bestColor The color of the best-times line.
 */
private void addMainDataSets(LineData chartData, String allLabel, int allColor,
                             String bestLabel, int bestColor) {
    // Main data set for all solve times.
    chartData.addDataSet(createDataSet(allLabel, allColor));

    // Data set to show the progression of best times along the main line of all times.
    final LineDataSet bestDataSet = createDataSet(bestLabel, bestColor);

    bestDataSet.enableDashedLine(3f, 6f, 0f);

    bestDataSet.setDrawCircles(true);
    bestDataSet.setCircleRadius(BEST_TIME_CIRCLE_RADIUS_DP);
    bestDataSet.setCircleColor(bestColor);

    bestDataSet.setDrawValues(false);
    bestDataSet.setValueTextColor(bestColor);
    bestDataSet.setValueTextSize(BEST_TIME_VALUES_TEXT_SIZE_DP);
    bestDataSet.setValueFormatter(new TimeChartValueFormatter());

    chartData.addDataSet(bestDataSet);
}

/**
     * Adds the data set for the average-of-N (AoN) times and the corresponding data set for the
     * single best average time for that value of "N". The best AoN times are not shown as a
     * progression; only one time is shown and it superimposed on its main AoN line, rendered in
     * the same color as a circle and with the value drawn on the chart.
     *
     * @param chartData The chart data to which to add the new data sets.
     * @param label     The label of the AoN line and best AoN time marker.
     * @param color     The color of the AoN line and best AoN time marker.
     */
    private void addAoNDataSets(LineData chartData, String label, int color) {
        // Main AoN data set for all AoN times for one value of "N".
        chartData.addDataSet(createDataSet(label, color));

        // Data set for the single best AoN time for this "N".
        final LineDataSet bestAoNDataSet = createDataSet(label, color);

        bestAoNDataSet.setDrawCircles(true);
        bestAoNDataSet.setCircleRadius(BEST_TIME_CIRCLE_RADIUS_DP);
        bestAoNDataSet.setCircleColor(color);

        // Drawing the value of the best AoN time for each "N" seems like it would be a good idea,
        // but the values are really hard because they appear over other chart lines and sometimes
        // over the values drawn for the best time progression. Disabling them is no great loss,
        // as the statistics table shows the same values, anyway. Just showing a circle to mark
        // the best AoN time looks well enough on its own.
        bestAoNDataSet.setDrawValues(false);
//        bestAoNDataSet.setValueTextColor(color);
//        bestAoNDataSet.setValueTextSize(BEST_TIME_VALUES_TEXT_SIZE_DP);
//        bestAoNDataSet.setValueFormatter(new TimeChartValueFormatter());

        chartData.addDataSet(bestAoNDataSet);
    }

private void addEntry(int db) {

        LineData data = mLineChart.getData();

        if (data != null) {

            ILineDataSet set = data.getDataSetByIndex(0);
            // set.addEntry(...); // can be called as well

            if (set == null) {
                set = createSet();
                data.addDataSet(set);
            }

            data.addEntry(new Entry(set.getEntryCount(), db), 0);
            data.notifyDataChanged();

            // let the chart know it's data has changed
            mLineChart.notifyDataSetChanged();

            // limit the number of visible entries
            mLineChart.setVisibleXRangeMaximum(60);
            //mLineChart.setVisibleYRange(30, AxisDependency.LEFT);

            // move to the latest entry
            mLineChart.moveViewToX(data.getEntryCount());

        }
    }

public LineData createLineChartData()
{
    mDashboardHelper = new DashboardHelper(getActivity());
    HashMap<String, ArrayList> holder = mDashboardHelper.generateBeaconTotalDurationPerDayMap();

    ArrayList<String> xValues = holder.get("dayOfThisMonth");
    ArrayList<Entry> entries = holder.get("totalDurationPerDay");

    LineDataSet set = new LineDataSet(entries, "");
    set.setCircleColor(0xFF2196f3);
    set.setCircleRadius(4f);
    set.setDrawCircleHole(false);
    set.setColor(0xFF2196f3);
    set.setLineWidth(2f);
    set.setDrawValues(false);

    return new LineData(xValues, set);
}

private void initWithDummyData() {
    ArrayList<String> xVals = new ArrayList<String>();
    for (int i = 0; i < 24; i++) {
        xVals.add((i) + ":00");
    }

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

    // create a dataset and give it a type (0)
    LineDataSet set1 = new LineDataSet(yVals, "DataSet");
    set1.setLineWidth(3f);
    set1.setCircleRadius(5f);

    ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
    dataSets.add(set1); // add the datasets

    // create a data object with the datasets
    LineData data = new LineData(xVals, dataSets);

    mChart.setData(data);
}

private LineData generateLineData() {

        LineData d = new LineData();

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

        for (int index = 0; index < itemcount; index++)
            entries.add(new Entry(getRandom(15, 10), index));

        LineDataSet set = new LineDataSet(entries, "Line DataSet");
        set.setColor(Color.rgb(240, 238, 70));
        set.setLineWidth(2.5f);
        set.setCircleColor(Color.rgb(240, 238, 70));
        set.setCircleRadius(5f);
        set.setFillColor(Color.rgb(240, 238, 70));
        set.setDrawCubic(true);
        set.setDrawValues(true);
        set.setValueTextSize(10f);
        set.setValueTextColor(Color.rgb(240, 238, 70));

        set.setAxisDependency(YAxis.AxisDependency.LEFT);

        d.addDataSet(set);

        return d;
    }

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_linechart_noseekbar);

        mChart = (LineChart) findViewById(R.id.chart1);
        mChart.setOnChartValueSelectedListener(this);
        mChart.setDrawGridBackground(false);
        mChart.setDescription("");

        // add an empty data object
        mChart.setData(new LineData());
//        mChart.getXAxis().setDrawLabels(false);
//        mChart.getXAxis().setDrawGridLines(false);

        mChart.invalidate();
    }

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_colored_lines);

    mCharts[0] = (LineChart) findViewById(R.id.chart1);
    mCharts[1] = (LineChart) findViewById(R.id.chart2);
    mCharts[2] = (LineChart) findViewById(R.id.chart3);
    mCharts[3] = (LineChart) findViewById(R.id.chart4);

    mTf = Typeface.createFromAsset(getAssets(), "OpenSans-Bold.ttf");

    LineData data = getData(36, 100);
    data.setValueTypeface(mTf);

    for (int i = 0; i < mCharts.length; i++)
        // add some transparency to the color with "& 0x90FFFFFF"
        setupChart(mCharts[i], data, mColors[i % mColors.length]);
}

/**
 * Called in the UI thread.
 */
private void pulse() {
    addEntries();

    LineData historyData = (LineData) mStepsPerMinuteHistoryChart.getData();
    if (historyData == null) {
        return;
    }

    historyData.notifyDataChanged();
    mTotalStepsData.notifyDataSetChanged();
    mStepsPerMinuteData.notifyDataSetChanged();
    mStepsPerMinuteHistoryChart.notifyDataSetChanged();

    renderCharts();

    // have to enable it again and again to keep it measureing
    GBApplication.deviceService().onEnableRealtimeHeartRateMeasurement(true);
}

private LineData getLineData(List<String> xVals, List<Entry> lineEntries) {
    final LineDataSet dataSet = new LineDataSet(lineEntries, getContext().getString(R.string.moving_average));

    final int color = ContextCompat.getColor(getContext(), R.color.brown);

    dataSet.setColor(color);
    dataSet.setLineWidth(2.5f);
    dataSet.setCircleColor(color);
    dataSet.setFillColor(color);
    dataSet.setDrawValues(true);
    dataSet.setValueTextSize(12);
    dataSet.setValueTextColor(color);

    // Format the value labels to two decimal places
    dataSet.setValueFormatter(new LineChartValueFormatter());

    return new LineData(xVals, dataSet);
}

private LineData generateLineData() {
    LineData d = new LineData();

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

    for (int index = 0; index < 3; index++)
        entries.add(new Entry(index + 0.5f, UtilsRG.getRandomNumberInRange(0, 1)));

    LineDataSet set = new LineDataSet(entries, "Line DataSet");
    set.setColor(R.color.colorPrimaryLight);
    set.setLineWidth(2.5f);
    set.setCircleColor(R.color.colorPrimaryLight);
    set.setCircleRadius(5f);
    set.setFillColor(R.color.colorPrimaryLight);
    set.setMode(LineDataSet.Mode.CUBIC_BEZIER);
    set.setDrawValues(true);
    set.setValueTextSize(10f);
    set.setValueTextColor(R.color.colorPrimaryLight);

    set.setAxisDependency(YAxis.AxisDependency.LEFT);
    d.addDataSet(set);

    return d;
}

/**
 * Create dataset to be displayed in chart legend
 * @return CombinedData representing dummy data for a legend
 */
private CombinedData buildDummyDataForLegend(){
  CombinedData combinedData = new CombinedData();
  float xIndex = 1.5f;
  float close = 13;
  float open = 26f;
  float shadowH = 30.33f;
  float shadowL = -2.05f;
  float average = 20f;
  CandleData candleData = generateCandleData(xIndex, shadowH, shadowL, open, close, "EMU HI/LO" );
  ScatterData scatterData = generateScatterData(average, "EMU Mean");

  LineData s1 = generateOceanHiLo(close, open, "Ocean HI/LO");
  combinedData.setData(s1);
  combinedData.setData(candleData);
  combinedData.setData(scatterData);
  return combinedData;
}

/**
 * Generate line data line data.
 *
 * @return the line data
 */
protected LineData generateLineData() {

    ArrayList<ILineDataSet> sets = new ArrayList<ILineDataSet>();

    LineDataSet ds1 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "sine.txt"), "Sine function");
    LineDataSet ds2 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "cosine.txt"), "Cosine function");

    ds1.setLineWidth(2f);
    ds2.setLineWidth(2f);

    ds1.setDrawCircles(false);
    ds2.setDrawCircles(false);

    ds1.setColor(ColorTemplate.VORDIPLOM_COLORS[0]);
    ds2.setColor(ColorTemplate.VORDIPLOM_COLORS[1]);

    // load DataSets from textfiles in assets folders
    sets.add(ds1);
    sets.add(ds2);

    LineData d = new LineData(sets);
    d.setValueTypeface(tf);
    return d;
}

protected LineData generateLineData() {

    ArrayList<ILineDataSet> sets = new ArrayList<ILineDataSet>();

    LineDataSet ds1 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "sine.txt"), "Sine function");
    LineDataSet ds2 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "cosine.txt"), "Cosine function");

    ds1.setLineWidth(2f);
    ds2.setLineWidth(2f);

    ds1.setDrawCircles(false);
    ds2.setDrawCircles(false);

    ds1.setColor(ColorTemplate.VORDIPLOM_COLORS[0]);
    ds2.setColor(ColorTemplate.VORDIPLOM_COLORS[1]);

    // load DataSets from textfiles in assets folders
    sets.add(ds1);
    sets.add(ds2);

    LineData d = new LineData(sets);
    d.setValueTypeface(tf);
    return d;
}

private void removeLastEntry() {

        LineData data = mChart.getData();

        if (data != null) {

            ILineDataSet set = data.getDataSetByIndex(0);

            if (set != null) {

                Entry e = set.getEntryForXValue(set.getEntryCount() - 1, Float.NaN);

                data.removeEntry(e, 0);
                // or remove by index
                // mData.removeEntryByXValue(xIndex, dataSetIndex);
                data.notifyDataChanged();
                mChart.notifyDataSetChanged();
                mChart.invalidate();
            }
        }
    }

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_colored_lines);

    mCharts[0] = (LineChart) findViewById(R.id.chart1);
    mCharts[1] = (LineChart) findViewById(R.id.chart2);
    mCharts[2] = (LineChart) findViewById(R.id.chart3);
    mCharts[3] = (LineChart) findViewById(R.id.chart4);

    mTf = Typeface.createFromAsset(getAssets(), "OpenSans-Bold.ttf");

    for (int i = 0; i < mCharts.length; i++) {

        LineData data = getData(36, 100);
        data.setValueTypeface(mTf);

        // add some transparency to the color with "& 0x90FFFFFF"
        setupChart(mCharts[i], data, mColors[i % mColors.length]);
    }
}

public void updateChart(float value, int index) {
  LineData data = messagesChart.getData();
  ILineDataSet set = data.getDataSetByIndex(index);

  if (set == null) {
    set = createSet(getLineColor(index));
    data.addDataSet(set);
  }

  data.addEntry(new Entry(set.getEntryCount(), value), index);
  data.notifyDataChanged();

  messagesChart.notifyDataSetChanged();
  messagesChart.setVisibleXRangeMaximum(getVisibleRange().getRange());
  messagesChart.moveViewToX(data.getEntryCount());
}

private void setData() {

        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();

        RealmLineDataSet<RealmDemoData> set = new RealmLineDataSet<RealmDemoData>(result, "xValue", "yValue");
        set.setMode(LineDataSet.Mode.CUBIC_BEZIER);
        set.setLabel("Realm LineDataSet");
        set.setDrawCircleHole(false);
        set.setColor(ColorTemplate.rgb("#FF5722"));
        set.setCircleColor(ColorTemplate.rgb("#FF5722"));
        set.setLineWidth(1.8f);
        set.setCircleRadius(3.6f);

        ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
        dataSets.add(set); // add the dataset

        // create a data object with the dataset list
        LineData data = new LineData(dataSets);
        styleData(data);

        // set data
        mChart.setData(data);
        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
    }

@Override
public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {

    float fillMin = 0f;
    float chartMaxY = dataProvider.getYChartMax();
    float chartMinY = dataProvider.getYChartMin();

    LineData data = dataProvider.getLineData();

    if (dataSet.getYMax() > 0 && dataSet.getYMin() < 0) {
        fillMin = 0f;
    } else {

        float max, min;

        if (data.getYMax() > 0)
            max = 0f;
        else
            max = chartMaxY;
        if (data.getYMin() < 0)
            min = 0f;
        else
            min = chartMinY;

        fillMin = dataSet.getYMin() >= 0 ? min : max;
    }

    return fillMin;
}

@Override
public void drawData(Canvas c) {

    int width = (int) mViewPortHandler.getChartWidth();
    int height = (int) mViewPortHandler.getChartHeight();

    if (mDrawBitmap == null
            || (mDrawBitmap.get().getWidth() != width)
            || (mDrawBitmap.get().getHeight() != height)) {

        if (width > 0 && height > 0) {

            mDrawBitmap = new WeakReference<Bitmap>(Bitmap.createBitmap(width, height, mBitmapConfig));
            mBitmapCanvas = new Canvas(mDrawBitmap.get());
        } else
            return;
    }

    mDrawBitmap.get().eraseColor(Color.TRANSPARENT);

    LineData lineData = mChart.getLineData();

    for (ILineDataSet set : lineData.getDataSets()) {

        if (set.isVisible())
            drawDataSet(c, set);
    }

    c.drawBitmap(mDrawBitmap.get(), 0, 0, mRenderPaint);
}