How can i compare two set of data using BarChart
of MPAndroidChart.
It should look like this image below:
I edited a code, I get from a sample project in github.
how can I put together 100f and 110f
value in one Xaxis
label Whole Number
Score score1 = new Score(100f, 0, "Whole Number");
mRealm.copyToRealm(score1);
Score score2 = new Score(110f, 0, "Whole Number");
mRealm.copyToRealm(score2);
Since there has been an update on BarData constructor you need to use following code:
BarChart barChart = (BarChart) view.findViewById(R.id.chart);
barChart.setDrawBarShadow(false);
barChart.setDrawValueAboveBar(true);
barChart.setDescription("");
barChart.setMaxVisibleValueCount(50);
barChart.setPinchZoom(false);
barChart.setDrawGridBackground(false);
XAxis xl = barChart.getXAxis();
xl.setGranularity(1f);
xl.setCenterAxisLabels(true);
xl.setValueFormatter(new AxisValueFormatter() {
@Override
public String getFormattedValue(float value, AxisBase axis) {
return String.valueOf((int) value);
}
@Override
public int getDecimalDigits() {
return 0;
}
});
YAxis leftAxis = barChart.getAxisLeft();
leftAxis.setValueFormatter(new AxisValueFormatter() {
@Override
public String getFormattedValue(float value, AxisBase axis) {
return String.valueOf((int) value);
}
@Override
public int getDecimalDigits() {
return 0;
}
});
leftAxis.setDrawGridLines(false);
leftAxis.setSpaceTop(30f);
leftAxis.setAxisMinValue(0f); // this replaces setStartAtZero(true
barChart.getAxisRight().setEnabled(false);
//data
float groupSpace = 0.04f;
float barSpace = 0.02f; // x2 dataset
float barWidth = 0.46f; // x2 dataset
// (0.46 + 0.02) * 2 + 0.04 = 1.00 -> interval per "group"
int startYear = 1980;
int endYear = 1985;
List<BarEntry> yVals1 = new ArrayList<BarEntry>();
List<BarEntry> yVals2 = new ArrayList<BarEntry>();
for (int i = startYear; i < endYear; i++) {
yVals1.add(new BarEntry(i, 0.4f));
yVals2.add(new BarEntry(i, 0.7f));
}
BarDataSet set1, set2;
if (barChart.getData() != null && barChart.getData().getDataSetCount() > 0) {
set1 = (BarDataSet)barChart.getData().getDataSetByIndex(0);
set2 = (BarDataSet)barChart.getData().getDataSetByIndex(1);
set1.setValues(yVals1);
set2.setValues(yVals2);
barChart.getData().notifyDataChanged();
barChart.notifyDataSetChanged();
} else {
// create 2 datasets with different types
set1 = new BarDataSet(yVals1, "Company A");
set1.setColor(Color.rgb(104, 241, 175));
set2 = new BarDataSet(yVals2, "Company B");
set2.setColor(Color.rgb(164, 228, 251));
ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
dataSets.add(set1);
dataSets.add(set2);
BarData data = new BarData(dataSets);
barChart.setData(data);
}
barChart.getBarData().setBarWidth(barWidth);
barChart.getXAxis().setAxisMinValue(startYear);
barChart.groupBars(startYear, groupSpace, barSpace);
barChart.invalidate();
That's how it will look like: