/** Add the data of a specific signal type of a specific point to chart. */ public void refreshChartOfSignal(MapPoint p, String signalTypeId) { LineChart chart = getChart(signalTypeId); ArrayList<LineDataSet> currentChartDataSets = new ArrayList<LineDataSet>(); for (SignalDataSet ds : p.getDataSetsOfSignal(signalTypeId)) { // Log.i("NewPointActivity", "addToGraph ("+p+"): "+signalTypeId+", // "+ds.getSignalSourceId()+", "+ds.getDate()+", "+ds.size()); LineDataSet chartDataSet = createChartDataSet(ds.getSignalSourceId(), ds.getDate()); for (SignalSample s : ds.getSamples()) { if (s == null) { // @todo Each dataset must have its own null value. // Here the null value is fixed -150f. chartDataSet.addEntry(new Entry(-150f, chartDataSet.getEntryCount())); } else { // Add the sample to chart line. DoubleSignalSample doubleSignalSample = (DoubleSignalSample) s; chartDataSet.addEntry( new Entry(doubleSignalSample.getValue().floatValue(), chartDataSet.getEntryCount())); } } // Add the line to chart. currentChartDataSets.add(chartDataSet); // Updates table. updateDataTable(ds); } refreshChart(chart, currentChartDataSets); }
/** * Refreshs a chart. * * @param chart * @param chartDataSets */ public void refreshChart(LineChart chart, ArrayList<LineDataSet> chartDataSets) { // Populates X List. // Identifies the biggets dataset. int maxSize = 0; for (LineDataSet dataSet : chartDataSets) if (dataSet.getEntryCount() > maxSize) maxSize = dataSet.getEntryCount(); ArrayList<String> xVals = new ArrayList<String>(); while (xVals.size() < maxSize) xVals.add((xVals.size() + 1) + ""); LineData chartData = new LineData(xVals, chartDataSets); chart.setData(chartData); chart.notifyDataSetChanged(); chart.invalidate(); }
private void addEntry() { LineData data = mLineChart.getData(); if (data != null) { LineDataSet set = data.getDataSetByIndex(0); if (set == null) { set = createSet(); data.addDataSet(set); } // add a new random value float a = r.nextFloat() * (2.00f + 2.00f) - 2.0f; System.out.println(a); data.addXValue(""); data.addEntry(new Entry(a, set.getEntryCount()), 0); mLineChart.notifyDataSetChanged(); mLineChart.setVisibleXRange(6, 0); mLineChart.moveViewToX(data.getXValCount() - 7); } }