/** 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);
}
}