Java LineDataSet類代碼示例

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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;
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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;
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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;
    }
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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;
    }
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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);
    }
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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);
    }
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
/**
 * 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);
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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);
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
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;
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
@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();
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
private LineDataSet createSet(String label) {
    LineDataSet set = new LineDataSet(null, label);
    set.setAxisDependency(YAxis.AxisDependency.LEFT);
    int color;
    if (label.equals(pm1Label)) {
        color = Color.BLUE;
    } else if (label.equals(pm25Label)) {
        color = Color.RED;
    } else {
        color = Color.BLACK;
    }
    set.setColor(color);
    set.setLineWidth(2f);
    set.setDrawValues(false);
    set.setDrawCircles(false);
    set.setMode(LineDataSet.Mode.LINEAR);
    return set;
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
/**
 * 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);
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
/**
     * 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);
    }
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
/**
 * Creates a data set with the given label and color. Highlights and drawing of values and
 * circles are disabled, as that is common for many cases.
 *
 * @param label The label to assign to the new data set.
 * @param color The line color to set for the new data set.
 */
private LineDataSet createDataSet(String label, int color) {
    // A legend is enabled on the chart view in the graph fragment. The legend is created
    // automatically, but requires a unique labels and colors on each data set.
    final LineDataSet dataSet = new LineDataSet(null, label);

    // A dashed line can make peaks inaccurate. It also makes the graph look too "busy". It
    // is OK for some uses, such as progressions of best times, but that is left to the caller
    // to change once this new data set is returned.
    //
    // If graphing only times for a session, there will be fewer, and a thicker line will look
    // well. However, if all times are graphed, a thinner line will probably look better, as
    // the finer details will be more visible.
    dataSet.setLineWidth(getLineWidth());
    dataSet.setColor(color);
    dataSet.setHighlightEnabled(false);

    dataSet.setDrawCircles(false);
    dataSet.setDrawValues(false);

    return dataSet;
}
 

import com.github.mikephil.charting.data.LineDataSet; //導入依賴的package包/類
private LineDataSet createSet() {

        LineDataSet set = new LineDataSet(null, getString(R.string.app_name));
        set.setAxisDependency(YAxis.AxisDependency.LEFT);
        set.setColor(ColorTemplate.getHoloBlue());
        set.setCircleColor(Color.WHITE);
        set.setLineWidth(1f);
        set.setCircleRadius(1.5f);
        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;
    }