In my application, I need to display bar graphs. For that I am using MPAndroidChart library. Displayed the graph very well by using the following code.
This is the line added in gradle file
implementation 'com.github.PhilJay:MPAndroidChart:v2.2.4'
This is the activity
public class MainActivity2 extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
BarChart barChart = (BarChart) findViewById(R.id.barchart);
ArrayList<BarEntry> entries = new ArrayList<>();
entries.add(new BarEntry(38f, 0));
entries.add(new BarEntry(52f, 1));
entries.add(new BarEntry(65f, 2));
entries.add(new BarEntry(30f, 3));
entries.add(new BarEntry(85f, 4));
entries.add(new BarEntry(19f, 5));
entries.add(new BarEntry(75f, 6));
BarDataSet bardataset = new BarDataSet(entries, " ");
ArrayList<String> labels = new ArrayList<String>();
labels.add("Mon");
labels.add("Tue");
labels.add("Wed");
labels.add("Thus");
labels.add("Fri");
labels.add("Sat");
labels.add("Sun");
BarData data = new BarData(labels, bardataset);
barChart.setData(data); // set the data and list of lables into chart
bardataset.setValueFormatter(new MyValueFormatter());
bardataset.setColor(Color.rgb(102, 178, 255));
}
public class MyValueFormatter implements ValueFormatter {
#Override
public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
return "";
}
}
}
I am getting the bellow out put.
But in my application, I need to display Y-Axis values are like this 5, 10, 15, 20, 25, 30 ,35 instaed of 10, 20, 30, 40, 50 and X-axis values (Mon, Tue, Wed, ....) should display bottom of the screen.
How to do these two changes.
Thanks... In advance
For displaying X Axis values in bottom.
barChart.getXAxis().setPosition(XAxis.XAxisPosition.BOTTOM);
Related
I'm using latest version of MPAndroidChart. I'm trying to generate a grouped bar chart, following the example on this link, but without success. The problem is the xAxis. Altought I set fromX = 0 , bars don't begin fit to left axis. It has an space between the left vertical line and the beginig of the first bar.
Here is my code:
BarChart barChart = (BarChart) view.findViewById(R.id.chartDesgFam);
ArrayList<BarEntry> entries = new ArrayList<>();
entries.add(new BarEntry(0,4f));
entries.add(new BarEntry(1,8f));
entries.add(new BarEntry(2,6f));
entries.add(new BarEntry(3,12f));
entries.add(new BarEntry(4,18f));
entries.add(new BarEntry(5,9f));
ArrayList<BarEntry> entries2 = new ArrayList<>();
entries2.add(new BarEntry(0,5f));
entries2.add(new BarEntry(1,6f));
entries2.add(new BarEntry(2,12f));
entries2.add(new BarEntry(3,5f));
entries2.add(new BarEntry(4,14f));
entries2.add(new BarEntry(5,3f));
BarDataSet dataset = new BarDataSet(entries, "Serie 1");
dataset.setColor(Color.rgb(0, 0, 200));
BarDataSet dataset2 = new BarDataSet(entries2, "Serie 2");
dataset2.setColor(Color.rgb(200, 0, 0));
ArrayList<String> labels = new ArrayList<String>();
labels.add("January");
labels.add("February");
labels.add("March");
labels.add("April");
labels.add("May");
labels.add("June");
XAxis xAxis = barChart.getXAxis();
xAxis.setSpaceMin(0f);
xAxis.setDrawGridLines(false);
xAxis.setDrawLabels(true);
xAxis.setCenterAxisLabels(true);
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxis.setLabelCount(labels.size());
xAxis.setValueFormatter(new IAxisValueFormatter() {
#Override
public String getFormattedValue(float value, AxisBase axis) {
if (value>=0) {
if (value < labels.size() ) return labels.get((int) value);
else return "";
}
return "";
}
});
ArrayList<IBarDataSet> dataSets = new ArrayList<>();
dataSets.add(dataset);
dataSets.add(dataset2);
BarData data = new BarData(dataSets);
float groupSpace = 0.06f;
float barSpace = 0.02f; // x2 dataset
float barWidth = 0.45f; // x2 dataset
data.setBarWidth(barWidth);
barChart.setData(data);
barChart.groupBars(0, groupSpace, barSpace);
barChart.setFitBars(true);
barChart.invalidate();
In order to adjust the first bar to the left side, I need to put -0.2f in fromX parameter. I think It isn't for that, but I don't know why It doesn't begin from the left side. This is the result:
Please follow code below to get it fixed:
chart.getXAxis().setAxisMinimum(0);
chart.getXAxis().setAxisMaximum(0 + chart.getBarData().getGroupWidth(groupSpace, barSpace) * groupCount);
where groupCount is total number of entries you are having in your dataset. You can get that as:
data.getDataSetCount();
Is there anyway to set dynamically values to Yaxis using MPAndroidChart. I searched SO question but here I didn't get any answer. I have to set run-time values to Yaxis. I have also tried setGranularity() but this method is showing me error like can't resolve method setGranularity(float).Please help me.
you can try like this
private ArrayList<Entry> setYAxisValues(){
ArrayList<Entry> yVals = new ArrayList<Entry>();
//Change to your values
yVals.add(new Entry(0, 6));
yVals.add(new Entry(1, 4));
yVals.add(new Entry(2, 5));
yVals.add(new Entry(3, 4));
yVals.add(new Entry(4, 3));
yVals.add(new Entry(5, 2));
yVals.add(new Entry(6, 3));
yVals.add(new Entry(7, 4));
yVals.add(new Entry(8, 5));
yVals.add(new Entry(9, 3));
yVals.add(new Entry(10, 2));
yVals.add(new Entry(11,4));
return yVals;
}
private void setData() {
//call this method to set data
ArrayList<Entry> yVals = setYAxisValues();
LineDataSet set1;
// create a dataset and give it a type
set1 = new LineDataSet(yVals, "DataSet 1");
set1.setFillAlpha(110);
set1.setColor(Color.WHITE);
set1.setCircleColor(Color.WHITE);
set1.setLineWidth(1f);
set1.setCircleRadius(3f);
set1.setDrawCircleHole(false);
set1.setValueTextSize(9f);
ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
dataSets.add(set1); // add the datasets
// create a data object with the datasets
LineData data = new LineData(dataSets);
// set data to LineChart
mChart.setData(data);
mChart.setVisibleXRangeMaximum(4); // allow 20 values to be displayed at once on the x-axis, not more
mChart.moveViewToX(10);
}
I've been reading through the documentation for MPAndroidChart (using v3.0.1) and I can't seem to find a way to remove the labels on the bars
I would like to hide the values that are shown on top of each bar, OR change the values of them to something I can set manually. Either option would work well for my implementation.
I'm not sure if it is even possible to do either. I'm very new to android development any help would be great.
my code is:
public class MainActivity extends AppCompatActivity {
protected BarChart chart;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
chart = (BarChart) findViewById(R.id.chart1);
Description desc ;
Legend L;
L = chart.getLegend();
desc = chart.getDescription();
desc.setText(""); // this is the weirdest way to clear something!!
L.setEnabled(false);
YAxis leftAxis = chart.getAxisLeft();
YAxis rightAxis = chart.getAxisRight();
XAxis xAxis = chart.getXAxis();
xAxis.setPosition(XAxisPosition.BOTTOM);
xAxis.setTextSize(10f);
xAxis.setDrawAxisLine(true);
xAxis.setDrawGridLines(false);
leftAxis.setTextSize(10f);
leftAxis.setDrawLabels(false);
leftAxis.setDrawAxisLine(true);
leftAxis.setDrawGridLines(false);
rightAxis.setDrawAxisLine(false);
rightAxis.setDrawGridLines(false);
rightAxis.setDrawLabels(false);
BarData data = new BarData( setData());
data.setBarWidth(0.9f); // set custom bar width
chart.setData(data);
chart.setFitBars(true); // make the x-axis fit exactly all bars
chart.invalidate(); // refresh
chart.setScaleEnabled(false);
chart.setDoubleTapToZoomEnabled(false);
chart.setBackgroundColor(Color.rgb(255, 255, 255));
chart.animateXY(2000, 2000);
chart.setDrawBorders(false);
chart.setDescription(desc);
chart.setDrawValueAboveBar(true);
}
private BarDataSet setData() {
ArrayList<BarEntry> entries = new ArrayList<>();
entries.add(new BarEntry(0f, 30f));
entries.add(new BarEntry(1f, 80f));
entries.add(new BarEntry(2f, 60f));
entries.add(new BarEntry(3f, 50f));
entries.add(new BarEntry(4f, 70f));
entries.add(new BarEntry(5f, 60f));
BarDataSet set = new BarDataSet(entries, "");
set.setColor(Color.rgb(155, 155, 155));
set.setValueTextColor(Color.rgb(155,155,155));
return set;
}
}
Has anyone had any experience with this?
Github link for the library is here: https://github.com/PhilJay/MPAndroidChart
Simply create a new class and let it implement the IValueFormatter and return whatever you want to be displayed from the getFormattedValue(...) method like below.
public class MyValueFormatter implements IValueFormatter
{
#Override
public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler)
{
return "";
}
}
BarDataSet set = new BarDataSet(entries, "");
set.setValueFormatter(new MyValueFormatter());
set.setColor(Color.rgb(155, 155, 155));
set.setValueTextColor(Color.rgb(155, 155, 155));
You can find out more here.
For others coming through here looking for solutions, try setDrawValues on the data set instead.
BarDataSet dataSet = new BarDataSet(entries, "");
dataSet.setDrawValues(false);
I am trying to customize legend but not able to do so.My purpose is to give different legend labels.I ma using MPChart library to do so.
ArrayList<BarEntry> entries = new ArrayList<>();
entries.add(new BarEntry(4f, 0));
entries.add(new BarEntry(8f, 1));
entries.add(new BarEntry(6f, 2));
entries.add(new BarEntry(12f, 3));
entries.add(new BarEntry(18f, 4));
mColors.add(R.color.red);
mColors.add(R.color.text_color_gray);
mColors.add(R.color.text_color_blue);
mColors.add(R.color.green);
mColors.add(R.color.black);
BarDataSet dataset = new BarDataSet(entries, null);
ArrayList<String> labels = new ArrayList<String>();
labels.add("05");
labels.add("06");
labels.add("07");
labels.add("08");
labels.add("09");
BarData data = new BarData(labels, dataset);
Legend legend = mChart.getLegend();
legend.setEnabled(true);
legend.setPosition(Legend.LegendPosition.BELOW_CHART_CENTER);
legend.setForm(Legend.LegendForm.SQUARE);
legend.setColors(mColors);
legend.setLabels(mLabels);
mChart.setData(data);
mChart.animateY(2000);
LimitLine line = new LimitLine(10f);
YAxis yAxis = mChart.getAxisLeft();
yAxis.addLimitLine(line);
yAxis.setDrawAxisLine(true);
mChart.setDrawValueAboveBar(true);
mChart.setDrawBarShadow(false);
mChart.setVisibleXRange(4);
mChart.moveViewToX(2);
mChart.setDrawValueAboveBar(false);
mChart.invalidate();
Please let me know any solution for this.
you can custom your legend like this
LegendEntry legendEntryA = new LegendEntry();
legendEntryA.label = "a";
legendEntryA.formColor = Color.GREEN;
And add them to legend of the chart
legend.setCustom(Arrays.asList(legendEntryA, legendEntryB, legendEntryC, legendEntryD));
If you want to have 4 legend labels, you need 4 BarDataSet objects.
Having different colours will only group the different colours on the one legend that will be generated.
And you need to pass the colors to the DataSet and it will be mapped with the Legend.
Finally, your DataSets need a label which will be used for the legend. You can specify the label as second parameter in the constructor.
I am trying to add a static BarChart to the activity, but its covering whole screen. The code i am using is below -
MainActivity.java
BarChart bc = (BarChart) findViewById(R.id.chart);
ArrayList<BarEntry> entries = new ArrayList<>();
entries.add(new BarEntry(4f, 0));
entries.add(new BarEntry(8f, 1));
entries.add(new BarEntry(6f, 2));
entries.add(new BarEntry(12f, 3));
entries.add(new BarEntry(18f, 4));
entries.add(new BarEntry(9f, 5));
entries.add(new BarEntry(12f, 6));
entries.add(new BarEntry(10f, 7));
BarDataSet dataset = new BarDataSet(entries, "# of Calls");
ArrayList<String> labels = new ArrayList<String>();
labels.add("January");
labels.add("February");
labels.add("March");
labels.add("April");
labels.add("May");
labels.add("June");
labels.add("July");
labels.add("August");
bc=new BarChart(this);
BarData data = new BarData(labels, dataset);
setContentView(bc);
bc.setData(data);
MainActivity.xml
<com.github.mikephil.charting.charts.BarChart
android:layout_width="200dp"
android:layout_height="200dp"
android:id="#+id/chart"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="62dp">
</com.github.mikephil.charting.charts.BarChart>
Where i am going wrong?
Any suggestions
When you call setContentView() the layout parameters of the specified view are ignored, and set to the default MATCH_PARENT, so in your code setContentView(bc) will cause your BarChart to fill the entire screen.
One solution would be to place your static BarChart view under a ViewGroup, like LinearLayout, in activity_main.xml, and call setContentView(R.layout.activity_main).
EDIT:
Another thing, in your code you obtained the BarChart defined in your xml by doing:
BarChart bc = (BarChart) findViewById(R.id.chart);
Which is correct... but later on in your code, you made the above line pointless by assigning bcto another BarChart you instantiated:
bc=new BarChart(this);
So, remove this line and you should be able to see your BarChart.