Java Code Examples for com.github.mikephil.charting.data.ChartData#generateXVals()

protected BarData generateBarData(int dataSets, float range, int count) {
        
        ArrayList<IBarDataSet> sets = new ArrayList<IBarDataSet>();
        
        for(int i = 0; i < dataSets; i++) {
           
            ArrayList<BarEntry> entries = new ArrayList<BarEntry>();
            
//            entries = FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "stacked_bars.txt");
            
            for(int j = 0; j < count; j++) {        
                entries.add(new BarEntry((float) (Math.random() * range) + range / 4, j));
            }
            
            BarDataSet ds = new BarDataSet(entries, getLabel(i));
            ds.setColors(ColorTemplate.VORDIPLOM_COLORS);
            sets.add(ds);
        }
        
        BarData d = new BarData(ChartData.generateXVals(0, count), sets);
        d.setValueTypeface(tf);
        return d;
    }
 

protected ScatterData generateScatterData(int dataSets, float range, int count) {
    
    ArrayList<IScatterDataSet> sets = new ArrayList<IScatterDataSet>();
    
    ScatterShape[] shapes = ScatterChart.getAllPossibleShapes();
    
    for(int i = 0; i < dataSets; i++) {
       
        ArrayList<Entry> entries = new ArrayList<Entry>();
        
        for(int j = 0; j < count; j++) {        
            entries.add(new Entry((float) (Math.random() * range) + range / 4, j));
        }
        
        ScatterDataSet ds = new ScatterDataSet(entries, getLabel(i));
        ds.setScatterShapeSize(12f);
        ds.setScatterShape(shapes[i % shapes.length]);
        ds.setColors(ColorTemplate.COLORFUL_COLORS);
        ds.setScatterShapeSize(9f);
        sets.add(ds);
    }
    
    ScatterData d = new ScatterData(ChartData.generateXVals(0, count), sets);
    d.setValueTypeface(tf);
    return d;
}
 

protected LineData generateLineData() {
        
//        DataSet ds1 = new DataSet(n, "O(n)");  
//        DataSet ds2 = new DataSet(nlogn, "O(nlogn)"); 
//        DataSet ds3 = new DataSet(nsquare, "O(n\u00B2)");
//        DataSet ds4 = new DataSet(nthree, "O(n\u00B3)");
        
        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);
        
//        sets.add(FileUtils.dataSetFromAssets(getActivity().getAssets(), "n.txt"));
//        sets.add(FileUtils.dataSetFromAssets(getActivity().getAssets(), "nlogn.txt"));
//        sets.add(FileUtils.dataSetFromAssets(getActivity().getAssets(), "square.txt"));
//        sets.add(FileUtils.dataSetFromAssets(getActivity().getAssets(), "three.txt"));
        
        int max = Math.max(sets.get(0).getEntryCount(), sets.get(1).getEntryCount());
        
        LineData d = new LineData(ChartData.generateXVals(0, max),  sets);
        d.setValueTypeface(tf);
        return d;
    }
 

protected LineData getComplexity() {
    
    ArrayList<ILineDataSet> sets = new ArrayList<ILineDataSet>();
    
    LineDataSet ds1 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "n.txt"), "O(n)");
    LineDataSet ds2 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "nlogn.txt"), "O(nlogn)");
    LineDataSet ds3 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "square.txt"), "O(n\u00B2)");
    LineDataSet ds4 = new LineDataSet(FileUtils.loadEntriesFromAssets(getActivity().getAssets(), "three.txt"), "O(n\u00B3)");
    
    ds1.setColor(ColorTemplate.VORDIPLOM_COLORS[0]);
    ds2.setColor(ColorTemplate.VORDIPLOM_COLORS[1]);
    ds3.setColor(ColorTemplate.VORDIPLOM_COLORS[2]);
    ds4.setColor(ColorTemplate.VORDIPLOM_COLORS[3]);
    
    ds1.setCircleColor(ColorTemplate.VORDIPLOM_COLORS[0]);
    ds2.setCircleColor(ColorTemplate.VORDIPLOM_COLORS[1]);
    ds3.setCircleColor(ColorTemplate.VORDIPLOM_COLORS[2]);
    ds4.setCircleColor(ColorTemplate.VORDIPLOM_COLORS[3]);
    
    ds1.setLineWidth(2.5f);
    ds1.setCircleRadius(3f);
    ds2.setLineWidth(2.5f);
    ds2.setCircleRadius(3f);
    ds3.setLineWidth(2.5f);
    ds3.setCircleRadius(3f);
    ds4.setLineWidth(2.5f);
    ds4.setCircleRadius(3f);
    
    
    // load DataSets from textfiles in assets folders
    sets.add(ds1);        
    sets.add(ds2);
    sets.add(ds3);
    sets.add(ds4);
    
    LineData d = new LineData(ChartData.generateXVals(0, ds1.getEntryCount()), sets);
    d.setValueTypeface(tf);
    return d;
}
 

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState)
{
    CombinedChart chart = (CombinedChart) view.findViewById(R.id.recording_chart);

    pitchDataSet = new LineDataSet(mListener.startingPitchEntries(), getResources().getString(R.string.progress));
    // generate x value strings
    // [1, 2, 3,... basically random numbers as the recorded pitch is based on processor speed]
    List<String> xVals = ChartData.generateXVals(0, pitchDataSet.getEntryCount());
    chartData = new CombinedData(xVals);

    pitchDataSet.setColor(getResources().getColor(R.color.canvas_dark));
    pitchDataSet.setDrawCircles(false);
    pitchDataSet.setLineWidth(2f);
    pitchDataSet.setDrawValues(false);
    pitchDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);

    pitchData = new LineData(xVals, pitchDataSet);
    chartData.setData(pitchData);

    genderBarData = new BarData(xVals, GraphLayout.getOverallRange(this.getContext(), xVals.size()));
    // Bug with chart lib that throws exception for empty bar charts so must skip adding it on init
    // if were coming from the live pitch graph.
    if (!xVals.isEmpty())
        chartData.setData(genderBarData);

    chart.setData(chartData);

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

    GraphLayout.FormatChart(chart);

    super.onViewCreated(view, savedInstanceState);
}