MPAndroidChart refresh graph every X inputs

Question

How to refresh graph dynamic?

Init Chart.

    final LineData mLineData = mChart.getData();

    final ILineDataSet[] xSet = {mLineData.getDataSetByIndex(0)};

    final int xSetArrayItem = 0;

    if (xSet[xSetArrayItem] == null) {
        xSet[xSetArrayItem] = createSet("Ecg", getResources().getColor(android.R.color.holo_red_dark));
        mLineData.addDataSet(xSet[xSetArrayItem]);
    }

After this I'm doing subscribe for real data and putting it into graph.

mLineData.addEntry(new Entry(xValue++, ecgModel.getBody().getData()[i]), 0);

mLineData.notifyDataChanged();

// let the chart know it's data has changed
   mChart.notifyDataSetChanged();
// limit the number of visible entries
   mChart.setVisibleXRangeMaximum(200);
// move to the latest entry
  mChart.moveViewToX(xValue);

And Problem is I don't want to scroll X Axis. I want to put for example 400 inputs clear graph and let chart draw new 400 inputs.

Something like this:

       if (xValue == 400) {
           xValue = 0;
           mLineData.clearValues();
           mChart.invalidate();
         }

- But this clearing graph but then nothing is draw on chart.

score 0 · Answer 1 · edited Jun 08 '20 at 09:13

0

try this,

yVals.clear();
xLabel.clear();
set = new BarDataSet(yVals, "");
ArrayList<IBarDataSet> dataSets = new ArrayList<>();
dataSets.add(set);
data = new BarData(dataSets);
ArrayList<Float> count = reportPojo.getCounts();
for (int i = 0; i < count.size(); i++) {
    float val = count.get(i);
    yVals.add(new BarEntry(i, val));
}
for (String label : reportPojo.getLabels()) {
    xLabel.add(label);
}
chart.setData(data);
set.notifyDataSetChanged();
chart.getData().notifyDataChanged();
chart.notifyDataSetChanged();
chart.invalidate();
return set;

edited Jun 08 '20 at 09:13

Twinkle

37
11

answered May 10 '18 at 15:47

g7pro

817
1
6
11

And where is dynamic refresh here? You are drawing chart after data is ready. – Esperanz0 May 10 '18 at 15:55
i too couldn't find a way so i used this instead notifying this chart is crashing mine also i was using in a recycler view. – g7pro May 10 '18 at 16:09

MPAndroidChart refresh graph every X inputs

1 Answers1