Mpandroidchart: setting labels on x axis in line chart

[arunrajput1007]

I don't know how to set labels in x axis in the new version of mpandroidchart. Have gone through the examples but didn't find any.

[chenshuiluke]

Same here bro

[chenshuiluke]

I kind of figured it out:

package com.lukechenshui.chart;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.github.mikephil.charting.charts.LineChart;
import com.github.mikephil.charting.components.AxisBase;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.LineData;
import com.github.mikephil.charting.data.LineDataSet;
import com.github.mikephil.charting.formatter.AxisValueFormatter;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        LineChart chart = (LineChart) findViewById(R.id.chart);

        int[] numArr = {1,2,3,4,5,6};

        final HashMap<Integer, String>numMap = new HashMap<>();
        numMap.put(1, "first");
        numMap.put(2, "second");
        numMap.put(3, "third");
        numMap.put(4, "fourth");
        numMap.put(5, "fifth");
        numMap.put(6, "sixth");

        List<Entry> entries1 = new ArrayList<Entry>();

        for(int num : numArr){
            entries1.add(new Entry(num, num));
        }

        LineDataSet dataSet = new LineDataSet(entries1, "Numbers");


        LineData data = new LineData(dataSet);

        XAxis xAxis = chart.getXAxis();
        xAxis.setValueFormatter(new AxisValueFormatter() {

            @Override
            public String getFormattedValue(float value, AxisBase axis) {

                return numMap.get((int)value);
            }

            @Override
            public int getDecimalDigits() {
                return 0;
            }
        });
        chart.setData(data);
        chart.invalidate();

    }
}

[qacwnfq]

Can not resolve symbol AxisValueFormatter.
Did the api change again?

[noelrmrz]

It did. use IAxisValueFormatter
XAxis xAxis = chart.getXAxis(); xAxis.setValueFormatter(new IAxisValueFormatter() { @Override public String getFormattedValue(float value, AxisBase axis) { return null; } });

[shaktipm]

X axis value is not coming continuously. If I am using value 0 to 10 then it's coming as 0 ,2,4,6,8,10,
I am using IAxisValueFormatter to format x values.
In getFormattedValue(float value, AxisBase axis) methods values are coming as 0 ,2,4,6,8,10.
It should come as 0,1,2,3,4,5,6,7,8,9,10.
Can anyone help ?

[ulaai]

Try to put this line
xAxis.setLabelCount(numArr.length);
representing the number of your labels.

[FazalHussain]

how to set x axis value yearly basis

[Sameera08]

even I am having the same problem as @shaktipm . the float value is incrementing as 0,2,4,6,8,10 instead of 0,1,2,3,4 . I have five labels in my lables array. xAxis.setLabelCount(lables.length); does'nt show any effect the output is the same. can you please help

[moorthysubu]

Yes I'm also facing this issue. When dataset increases, getFormattedValue value getting as 0,2,4,6, then 0,3,6,9... and 0,5,10,15.. Can anyone help me to get it as 0 to N without any intermediate interval?

[df1994]

I think you can use xAxis.setGranularity(1.0f) or xAxis.setLabelCount(N, true)

[patzu]

Hi, please someone explains, when I have below numbers as an array of Entries:

Why I receive completely different numbers as an argument for below method?
How can I have chart with XAxis lables in direct line with circles?

@Override public String getFormattedValue(float value, AxisBase axis) {}

[Snehalsixthsense]

For the com.github.PhilJay:MPAndroidChart:v3.0.3

I am using a label list:

final List list_x_axis_name = new ArrayList<>();
list_x_axis_name.add("label1");
list_x_axis_name.add("label2");
list_x_axis_name.add("label3");
list_x_axis_name.add("label4");
list_x_axis_name.add("label5");

and setting the label like this:

BarChart chartBar = (BarChart) findViewById(R.id.chartBar);
XAxis xAxis = chartBar.getXAxis();
xAxis.setGranularity(1f);
xAxis.setCenterAxisLabels(true);
xAxis.setLabelRotationAngle(-90);
xAxis.setValueFormatter(new IAxisValueFormatter() {
 @override
 public String getFormattedValue(float value, AxisBase axis) {
  if (value >= 0) {
   if (value <= list_x_axis_name.size() - 1) {
    return list_x_axis_name.get((int) value);
   }
   return "";
  }
  return "";
 }
});

[almic]

Closing old issue. If anyone still has this question please open a new one.

[nvquangth]

Awesome!

[jonfabris]

xAxis.setLabelCount(lineData.entryCount, true);

2nd param must be true