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

private LineData generateLineData() {

        LineData d = new LineData();

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

        for (int index = 0; index < count; 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 LineDataSet createSet() {

        LineDataSet set = new LineDataSet(null, "Dynamic Data");
        set.setAxisDependency(AxisDependency.LEFT);
        set.setColor(ColorTemplate.getHoloBlue());
        set.setCircleColor(Color.WHITE);
        set.setLineWidth(2f);
        set.setCircleRadius(4f);
        set.setFillAlpha(65);
        set.setFillColor(ColorTemplate.getHoloBlue());
        set.setHighLightColor(Color.rgb(244, 117, 117));
        set.setValueTextColor(Color.WHITE);
        set.setValueTextSize(9f);
        set.setDrawValues(false);
        return set;
    }
 

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;
    }
 

private LineDataSet createSet() {

        LineDataSet set = new LineDataSet(null, "Dynamic Data");
        set.setAxisDependency(AxisDependency.LEFT);
        set.setColor(ColorTemplate.getHoloBlue());
        set.setCircleColor(Color.WHITE);
        set.setLineWidth(2f);
        set.setCircleRadius(4f);
        set.setFillAlpha(65);
        set.setFillColor(ColorTemplate.getHoloBlue());
        set.setHighLightColor(Color.rgb(244, 117, 117));
        set.setValueTextColor(Color.WHITE);
        set.setValueTextSize(9f);
        set.setDrawValues(false);
        return set;
    }
 

private void addDataSet() {

        LineData data = chart.getData();

        if (data == null) {
            chart.setData(new LineData());
        } else {
            int count = (data.getDataSetCount() + 1);
            int amount = data.getDataSetByIndex(0).getEntryCount();

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

            for (int i = 0; i < amount; i++) {
                values.add(new Entry(i, (float) (Math.random() * 50f) + 50f * count));
            }

            LineDataSet set = new LineDataSet(values, "DataSet " + count);
            set.setLineWidth(2.5f);
            set.setCircleRadius(4.5f);

            int color = colors[count % colors.length];

            set.setColor(color);
            set.setCircleColor(color);
            set.setHighLightColor(color);
            set.setValueTextSize(10f);
            set.setValueTextColor(color);

            data.addDataSet(set);
            data.notifyDataChanged();
            chart.notifyDataSetChanged();
            chart.invalidate();
        }
    }
 

private void setData(int count, float range) {

        // now in hours
        long now = TimeUnit.MILLISECONDS.toHours(System.currentTimeMillis());

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

        // count = hours
        float to = now + count;

        // increment by 1 hour
        for (float x = now; x < to; x++) {

            float y = getRandom(range, 50);
            values.add(new Entry(x, y)); // add one entry per hour
        }

        // create a dataset and give it a type
        LineDataSet set1 = new LineDataSet(values, "DataSet 1");
        set1.setAxisDependency(AxisDependency.LEFT);
        set1.setColor(ColorTemplate.getHoloBlue());
        set1.setValueTextColor(ColorTemplate.getHoloBlue());
        set1.setLineWidth(1.5f);
        set1.setDrawCircles(false);
        set1.setDrawValues(false);
        set1.setFillAlpha(65);
        set1.setFillColor(ColorTemplate.getHoloBlue());
        set1.setHighLightColor(Color.rgb(244, 117, 117));
        set1.setDrawCircleHole(false);

        // create a data object with the data sets
        LineData data = new LineData(set1);
        data.setValueTextColor(Color.WHITE);
        data.setValueTextSize(9f);

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

private void setupDatasetWithDefaultValues(LineDataSet dataSet) {
    dataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    dataSet.setColor(ColorTemplate.getHoloBlue());
    dataSet.setValueTextColor(ColorTemplate.getHoloBlue());
    dataSet.setLineWidth(1.5f);
    dataSet.setDrawCircles(false);
    dataSet.setDrawValues(false);
    dataSet.setFillAlpha(65);
    dataSet.setFillColor(ColorTemplate.getHoloBlue());
    dataSet.setHighLightColor(Color.rgb(244, 117, 117));
    dataSet.setDrawCircleHole(false);
}
 

/**
 * 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.
    final LineDataSet mainDataSet = createDataSet(allLabel, allColor);

    mainDataSet.setDrawCircles(getDrawCircle());
    mainDataSet.setCircleRadius(getCircleRadius());
    mainDataSet.setCircleColor(allColor);
    mainDataSet.setColor(getLineColor(allColor));

    chartData.addDataSet(mainDataSet);

    // 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);
}
 

private void addDataSet() {

        LineData data = mChart.getData();
        
        if(data != null) {

            int count = (data.getDataSetCount() + 1);

            // create 10 y-vals
            ArrayList<Entry> yVals = new ArrayList<Entry>();
            
            if(data.getXValCount() == 0) {
                // add 10 x-entries
                for (int i = 0; i < 10; i++) {
                    data.addXValue("" + (i+1));
                }
            }

            for (int i = 0; i < data.getXValCount(); i++) {
                yVals.add(new Entry((float) (Math.random() * 50f) + 50f * count, i));
            }

            LineDataSet set = new LineDataSet(yVals, "DataSet " + count);
            set.setLineWidth(2.5f);
            set.setCircleRadius(4.5f);

            int color = mColors[count % mColors.length];

            set.setColor(color);
            set.setCircleColor(color);
            set.setHighLightColor(color);
            set.setValueTextSize(10f);
            set.setValueTextColor(color);

            data.addDataSet(set);
            mChart.notifyDataSetChanged();
            mChart.invalidate();   
        }
    }
 

private void drawBrightnessChart() {
    final String brightnessCurveString = brightnessCurveData.toString();
    List<Entry> entries = new ArrayList<>();

    // "u" marks the start of the brightness curve data
    int startIndex = brightnessCurveString.indexOf("u") + 1;
    int endIndex = brightnessCurveString.indexOf("end");
    if (endIndex == -1) endIndex = brightnessCurveString.length();

    String[] brightnessStrings =
            brightnessCurveString.substring(startIndex, endIndex).trim().split("\n");
    for (String str : brightnessStrings) {
        String[] arr = str.split(" ");
        final float timestampMs = Integer.parseInt(arr[0]) / 1000f;
        final float brightness = Integer.parseInt(arr[1]);
        entries.add(new Entry(timestampMs, brightness));
    }
    LineDataSet dataSet = new LineDataSet(entries, "Brightness");
    dataSet.setColor(Color.BLACK);
    dataSet.setValueTextColor(Color.BLACK);
    dataSet.setCircleColor(Color.BLACK);
    dataSet.setCircleRadius(1.5f);
    dataSet.setCircleColorHole(Color.DKGRAY);
    LineData lineData = new LineData(dataSet);
    brightnessChart.setData(lineData);
    final Description desc = new Description();
    desc.setText("Screen Brightness [digital level 0-1023] vs. Time [ms]");
    desc.setTextSize(12f);
    brightnessChart.setDescription(desc);
    brightnessChart.getLegend().setEnabled(false);
    brightnessChart.invalidate();
    brightnessChartLayout.setVisibility(View.VISIBLE);
}
 

private void drawWaveformChart() {
    final short[] wave = AudioTest.getRecordedWave();
    List<Entry> entries = new ArrayList<>();
    int frameRate = audioTest.getOptimalFrameRate();
    for (int i = 0; i < wave.length; i++) {
        float timeStamp = (float) i / frameRate * 1000f;
        entries.add(new Entry(timeStamp, (float) wave[i]));
    }
    LineDataSet dataSet = new LineDataSet(entries, "Waveform");
    dataSet.setColor(Color.BLACK);
    dataSet.setValueTextColor(Color.BLACK);
    dataSet.setCircleColor(ContextCompat.getColor(getContext(), R.color.DarkGreen));
    dataSet.setCircleRadius(1.5f);
    dataSet.setCircleColorHole(Color.DKGRAY);
    LineData lineData = new LineData(dataSet);
    chart.setData(lineData);

    LimitLine line = new LimitLine(audioTest.getThreshold(), "Threshold");
    line.setLineColor(Color.RED);
    line.setLabelPosition(LimitLine.LimitLabelPosition.LEFT_TOP);
    line.setLineWidth(2f);
    line.setTextColor(Color.DKGRAY);
    line.setTextSize(10f);
    chart.getAxisLeft().addLimitLine(line);

    final Description desc = new Description();
    desc.setText("Wave [digital level -32768 to +32767] vs. Time [ms]");
    desc.setTextSize(12f);
    chart.setDescription(desc);
    chart.getLegend().setEnabled(false);
    chart.invalidate();
    chartLayout.setVisibility(View.VISIBLE);
}
 

private LineDataSet createDataSet() {
    LineDataSet powerDataset = new LineDataSet(null, "watts");
    powerDataset.setColor(ContextCompat.getColor(context, R.color.chartBlue));
    powerDataset.setValueTextColor(ContextCompat.getColor(context, R.color.lightGrey));
    powerDataset.setDrawCircles(false);
    powerDataset.setDrawFilled(true);
    powerDataset.setFillColor(ContextCompat.getColor(context, R.color.chartBlue));
    powerDataset.setDrawValues(false);
    powerDataset.setValueTextSize(R.integer.chartValueTextSize);
    powerDataset.setHighlightEnabled(false);
    return powerDataset;
}
 

private void setChartValues(List<ItemHourlyDB> itemHourlyDBList) {
  List<Entry> entries = new ArrayList<>();
  int i = 0;
  if (AppUtil.isRTL(this)) {
    int j = itemHourlyDBList.size() - 1;
    while (j >= 0) {
      entries.add(new Entry(i, (float) itemHourlyDBList.get(j).getTemp()));
      i++;
      j--;
    }
  } else {
    for (ItemHourlyDB itemHourlyDB : itemHourlyDBList) {
      entries.add(new Entry(i, (float) itemHourlyDB.getTemp()));
      i++;
    }
  }
  LineDataSet dataSet = new LineDataSet(entries, "Label"); // add entries to dataset
  dataSet.setLineWidth(4f);
  dataSet.setCircleRadius(7f);
  dataSet.setHighlightEnabled(false);
  dataSet.setCircleColor(Color.parseColor("#33b5e5"));
  dataSet.setValueTextSize(12);
  dataSet.setValueTextColor(Color.WHITE);
  dataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
  dataSet.setValueTypeface(typeface);
  dataSet.setValueFormatter(new ValueFormatter() {
    @Override
    public String getFormattedValue(float value) {
      return String.format(Locale.getDefault(), "%.0f", value);
    }
  });
  LineData lineData = new LineData(dataSet);
  chart.getDescription().setEnabled(false);
  chart.getAxisLeft().setDrawLabels(false);
  chart.getAxisRight().setDrawLabels(false);
  chart.getXAxis().setDrawLabels(false);
  chart.getLegend().setEnabled(false);   // Hide the legend

  chart.getXAxis().setDrawGridLines(false);
  chart.getAxisLeft().setDrawGridLines(false);
  chart.getAxisRight().setDrawGridLines(false);
  chart.getAxisLeft().setDrawAxisLine(false);
  chart.getAxisRight().setDrawAxisLine(false);
  chart.getXAxis().setDrawAxisLine(false);
  chart.setScaleEnabled(false);
  chart.setData(lineData);
  chart.animateY(1000);
}
 

void setGraphData(JSONArray currencyRateTrends) {
    ArrayList<Entry> values = new ArrayList<>();

    for (int i = 0; i < currencyRateTrends.length(); i++) {
        try {
            values.add(new Entry(i, (float) currencyRateTrends.getDouble(i)));
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    LineDataSet lineDataSet = new LineDataSet(values, GRAPH_LABEL_NAME);
    lineDataSet.setDrawIcons(false);
    lineDataSet.setColor(Color.RED);
    lineDataSet.setCircleColor(Color.BLUE);
    lineDataSet.setCircleRadius(1f);
    lineDataSet.setLineWidth(1f);
    lineDataSet.setCircleRadius(3f);
    lineDataSet.setDrawCircleHole(true);
    lineDataSet.setValueTextSize(10f);
    lineDataSet.setValueTextColor(Color.BLACK);
    lineDataSet.setDrawFilled(true);
    lineDataSet.setFormSize(10.f);
    if (Utils.getSDKInt() >= 18) {
        // fill drawable only supported on api level 18 and above
        Drawable drawable = ContextCompat.getDrawable(this, R.drawable.fade_green);
        lineDataSet.setFillDrawable(drawable);
    } else {
        lineDataSet.setFillColor(Color.BLACK);
    }

    ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
    dataSets.add(lineDataSet);

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

    // set data
    graph.setData(data);

}
 

private void updateLineChart() {
    LineChart lineChart = getLineChart();
    if(lineChart == null) {
        return;
    }
    if(freqLeqStats.isEmpty()) {
        return;
    }
    float YMin = Float.MAX_VALUE;
    float YMax = Float.MIN_VALUE;

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

    // Read all white noise values for indexing before usage
    int idStep = 0;
    double referenceLevel = freqLeqStats.get(0).whiteNoiseLevel.getGlobaldBaValue();
    for(LinearCalibrationResult result : freqLeqStats) {
        ArrayList<Entry> yMeasure = new ArrayList<Entry>();
        int idfreq = 0;
        for (LeqStats leqStat : result.measure) {
            float dbLevel = (float)leqStat.getLeqMean();
            YMax = Math.max(YMax, dbLevel);
            YMin = Math.min(YMin, dbLevel);
            yMeasure.add(new Entry(dbLevel, idfreq++));
        }
        LineDataSet freqSet = new LineDataSet(yMeasure, String.format(Locale.getDefault(),"%d dB",
                (int)(result.whiteNoiseLevel.getGlobaldBaValue() - referenceLevel)));
        freqSet.setColor(ColorTemplate.COLORFUL_COLORS[idStep % ColorTemplate.COLORFUL_COLORS.length]);
        freqSet.setFillColor(ColorTemplate.COLORFUL_COLORS[idStep % ColorTemplate.COLORFUL_COLORS.length]);
        freqSet.setValueTextColor(Color.WHITE);
        freqSet.setCircleColorHole(ColorTemplate.COLORFUL_COLORS[idStep % ColorTemplate.COLORFUL_COLORS.length]);
        freqSet.setDrawValues(false);
        freqSet.setDrawFilled(true);
        freqSet.setFillAlpha(255);
        freqSet.setDrawCircles(true);
        freqSet.setMode(LineDataSet.Mode.LINEAR);
        dataSets.add(freqSet);
        idStep++;
    }


    ArrayList<String> xVals = new ArrayList<String>();
    double[] freqs = FFTSignalProcessing.computeFFTCenterFrequency(AudioProcess.REALTIME_SAMPLE_RATE_LIMITATION);
    for (double freqValue : freqs) {
        xVals.add(Spectrogram.formatFrequency((int)freqValue));
    }

    // create a data object with the datasets
    LineData data = new LineData(xVals, dataSets);
    lineChart.setData(data);
    YAxis yl = lineChart.getAxisLeft();
    yl.setAxisMinValue(YMin - 3);
    yl.setAxisMaxValue(YMax + 3);
    lineChart.invalidate();
}