I have a problem with BarChart.. I have a 7 item on list. For example
final int[] a = {5,2,10,4,7,8,13};
final String[] b= {"January","February","March","April","May","June","Jully"};
So I want to show by pieces on Barchart. For example first 5 items show and when I click the button than 2 items remaining show in Barchart. Images is,
Than I want when I click the "WAFAW" button barchart is,
But my code working is,
So it means dont show the bar..How can I do that? Thanks for now..
My Code is,
final BarChart barChart = (BarChart) findViewById(R.id.chart);
Button button = (Button) findViewById(R.id.button);
final int[] a = {5,2,10,4,7,8,13};
final String[] b= {"January","February","March","April","May","June","Jully"};
final ArrayList<BarEntry> entries = new ArrayList<>();
final ArrayList<String> labels = new ArrayList<String>();
for(int i=0 ; i<5;i++){
entries.add(new BarEntry(a[i],i));
labels.add(b[i]);
}
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
entries.clear();
labels.clear();
for(int i=5; i<a.length;i++){
entries.add(new BarEntry(a[i],i));
labels.add(b[i]);
}
BarDataSet dataset = new BarDataSet(entries, "# of Calls");
barChart.getXAxis().setPosition(XAxis.XAxisPosition.TOP);
BarData data = new BarData(labels, dataset);
dataset.setColors(ColorTemplate.COLORFUL_COLORS);
barChart.setData(data);
barChart.animateY(3000);
}
});
BarDataSet dataset = new BarDataSet(entries, "# of Calls");
barChart.getXAxis().setPosition(XAxis.XAxisPosition.TOP);
BarData data = new BarData(labels, dataset);
dataset.setColors(ColorTemplate.COLORFUL_COLORS);
barChart.setData(data);
barChart.animateY(3000);
As far as I know there is no simple solution on how to select which bars to display. It depends on how dynamically you want/need to solve it.
The best solution I can think of would be keeing an array of bars to show like:
final int[] show_arr = {0,1,2,3,4,5};
and when onClick() is called you change the array to
final int[] show_arr = {5,7};
and then you run through the whole plotting routine again.
But you add the entries with looping through show_arr
I know this is not a super nice solution, but at least you only have to code the vector hard and can reuse all the other parts.
You can use below code for the same :
https://github.com/blackfizz/EazeGraph
https://github.com/HackPlan/AndroidCharts
Related
I'm using MPandroidCharts in android application to make a bar chart it data from NodeJs server my code works fine but I found that when I change nbs of data (number of articles "on XAxe" < 5) the label nb and size still the some ( max 5 elements) that make my graph Not understood, I need a solution plz
to understand my situation plz look at pictures:
My code:
ArrayList<BarEntry> entries = new ArrayList<>();
final ArrayList<String> months = new ArrayList<>();
Log.d("liste size ",product_List.size()+"");
for(int i=0; i<product_List.size();i++){
Log.d("get List nb ",product_List.get(i).getId());
Log.d("get List produit ",product_List.get(i).getProduit());
months.add(i,product_List.get(i).getProduit());
int nb = Integer.parseInt(product_List.get(i).getId());
entries.add(new BarEntry(i, nb));
}
BarDataSet barDataSet = new BarDataSet(entries, "Produits");
barDataSet.setBarBorderWidth(0.9f);
barDataSet.setColors(ColorTemplate.COLORFUL_COLORS);
BarData barData = new BarData(barDataSet);
XAxis xAxis = barChart.getXAxis();
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
IndexAxisValueFormatter formatter = new IndexAxisValueFormatter(months);
xAxis.setGranularity(1f);
xAxis.setValueFormatter(formatter);
barChart.setData(barData);
barChart.setFitBars(true);
barChart.animateY(5000);
barChart.invalidate();
One more thing, if I when to clear chart data and make others by a button which code I need to use.
I have created an Pie chart which I want to spin randomly and stop on click.
Then my android program needs to read which value is above.
I already got this:
PieDataSet dataSet = new PieDataSet(yvalues, "");
ArrayList<String> xVals = new ArrayList<String>();
ArrayList<Integer> colors = new ArrayList<Integer>();
pieChart.setDrawHoleEnabled(false);
pieChart.animateXY(1400, 1400);
pieChart.getLegend().setEnabled(false);
pieChart.setDrawSliceText(false);
dataSet.setDrawValues(false);
xVals.add("Correct");
xVals.add("Wrong");
colors.add(Color.rgb(115, 255, 134));
colors.add(Color.rgb(255, 115, 115));
dataSet.setColors(colors);
pieChart.setDescription("");
PieData data = new PieData(xVals, dataSet);
data.setValueFormatter(new PercentFormatter());
data.setValueTextSize(18f);
data.setValueTextColor(Color.BLACK);
pieChart.setData(data);
pieChart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
pieChart.spin( 500,0,-360f, Easing.EasingOption.EaseInOutQuad);
}
});
I don't know how to spin this chart on click and stop it randomly.
Then I need to get the value of the chart which is spinned.
You can use this library.
(Easy and simple implementation of PieChart with Scatter)
This library will fulfill all the requirements you have mentioned above.
https://android-arsenal.com/details/1/4492
I am using MPAndroid Chart library to draw BarChart.
But not getting how to draw bars with real time data in on button click.
Can anyone please help me in this.
Thanks.
After getting data store that in List(graphData). Then,
BarChart barChart;
/*List to store real time data*/
private List<Integer> graphData = new ArrayList<>();
/*List of String which contains X-axis values */
ArrayList<String> xAxisValuesList = new ArrayList<>();
// create BarEntry for group
ArrayList<BarEntry> group = new ArrayList<>();
for (int i = 0; i < graphData.size(); i++) {
Log.d(TAG, "generating for:" + graphData.get(i));
group.add(new BarEntry(graphData.get(i), i));
}
// creating dataset for group
BarDataSet barDataSet = new BarDataSet(group, "Label");
// combined all dataset into an arraylist
ArrayList<BarDataSet> dataSets = new ArrayList<>();
dataSets.add(barDataSet);
// initialize the Bardata with argument labels and dataSet
BarData barData = new BarData(xAxisValuesList, dataSets);
barChart.setData(barData);
I created a graph app using MP android chart, i used it to plot two different line data sets . But my problem is that the value labels for the xaxis appear on the top of the graph . I need a way to make it to the bottom . below is my code
final LineChart linechart = (LineChart)findViewById(R.id.idlinechart);
//created list enties to hold the values
List<Entry> valuesCompany1 = new ArrayList<>(); List<Entry> valuesCompany2 = new ArrayList<>();
//created entry values to be entered into the lsit entry b
Entry c1e1 = new Entry(0f, 100000f); valuesCompany1.add(c1e1);
Entry c1e2 = new Entry (1f, 140000f);valuesCompany1.add(c1e2);
Entry c1e3 = new Entry(2f,90000f);valuesCompany1.add(c1e3);
Entry c1e4 = new Entry (3f, 150000f); valuesCompany1.add(c1e4);
Entry c2e1 = new Entry(0f, 50000f); valuesCompany2.add(c2e1);
Entry c2e2 = new Entry (1f, 50000f);valuesCompany2.add(c2e2);
Entry c2e3 = new Entry(2f,150000f);valuesCompany2.add(c2e3);
Entry c2e4 = new Entry (3f, 110000f); valuesCompany2.add(c2e4);
//so now we create line data to hold the list
LineDataSet linedatasetComp1 = new LineDataSet(valuesCompany1, "company 1");
linedatasetComp1.setAxisDependency(YAxis.AxisDependency.LEFT);
linedatasetComp1.setColor(Color.BLUE);
LineDataSet linedatasetComp2 = new LineDataSet(valuesCompany2, "company 2");
linedatasetComp2.setAxisDependency(YAxis.AxisDependency.LEFT);
linedatasetComp2.setColor(Color.RED);
List<ILineDataSet> iLinedata = new ArrayList<ILineDataSet>();
iLinedata.add(linedatasetComp1); //adding the line data sets into the line data list
iLinedata.add(linedatasetComp2);
//setting the Ilinedata list into line data
LineData linedata = new LineData(iLinedata);
//setting the line data into line chart
linechart.setData(linedata);
linechart.invalidate(); //refreshing the line chart
//Saving the picture to galery
Button savebutton = (Button)findViewById(R.id.button);
savebutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
linechart.saveToGallery("new Line chart", 150);
Toast.makeText(getApplicationContext(), "graph saved ", Toast.LENGTH_LONG).show();
}
});
final String[] Quaters = {"Q1", "Q2", "Q3", "Q4"};
IAxisValueFormatter valueFormater = new IAxisValueFormatter() {
#Override
public String getFormattedValue(float value, AxisBase axis) {
return Quaters[(int) value];
}
#Override
public int getDecimalDigits() {
return 0;
}
};
XAxis xAxis = linechart.getXAxis();
xAxis.setGranularity(1f);
xAxis.setValueFormatter(valueFormater);
Description desc = new Description();
desc.setText("A graph comparing revenuews of two companies ");
desc.setEnabled(true);
desc.setPosition(0,0);
desc.setTextColor(Color.BLACK);
linechart.setDescription(desc);
I don't know if LineChart has that option, but in case it does you just have to get the XAxis adjust the Position like this:
linechart.getXAxis().setPosition(XAxis.XAxisPosition.BOTTOM);
Hope it helps!
Use MPAndroid chart version 2.2.4 or above and use the code
mChart.getXAxis().setPosition(XAxis.XAxisPosition.BOTTOM);
as said by Ponchotg
I created a Piechart with MPandroidchart for my app. The chart works great. The problem is that the original data contains 4 data entry but the chart only show 3. Can somebody help? What is the limitation for this?
My PieChart
Hi Thank you so much for getting me back. The xVals and yVals are from SQLite database. xVals{30-,30-45,46-60,60-} String and yVals(6,14,13,3) float.
My codes are posted here:
private void AddDataCYNewCustomersAge(){
DataBaseHelper databasehelper = new DataBaseHelper (NewCustomerReportCurrentYear.this);
PieChart ageChart = new PieChart(this);
ageChart = (PieChart)findViewById(R.id.agechart);
//get yVals and datasets of marriage chart
ArrayList<Entry> yValsageCounts = new ArrayList<Entry>();
for(int i = 0;i < databasehelper.yDataIncomeCounts().size(); i++)
yValsageCounts.add(new Entry(databasehelper.yDataAgeCounts().get(i), i));
//get xVals of marriage chart
ArrayList<String> xValsage = new ArrayList<String>();
for(int i = 0;i < databasehelper.xDataAge().size();i++)
xValsage.add(databasehelper.xDataAge().get(i));
PieDataSet ageCounts = new PieDataSet(yValsageCounts, "");
//set yvals attribute
ageCounts.setSliceSpace(3);
ageCounts.setSelectionShift(5);
//add many colors
ageCounts.setColors(new int[]{R.color.Fuchsia, R.color.Aqua,R.color.Yellow,R.color.LightSeaGreen,R.color.Blue}, this);
// configue pie chart
ageChart.setUsePercentValues(true);
ageChart.setRotationEnabled(true);
ageChart.setRotationAngle(0);
ageChart.setDescriptionPosition(350, 550);
ageChart.setDrawHoleEnabled(true);
ageChart.setHoleColor(Color.TRANSPARENT);
ageChart.setHoleRadius(13);
ageChart.setTransparentCircleRadius(18);
ageChart.getLegend().setPosition(Legend.LegendPosition.RIGHT_OF_CHART);
//ageChart.getLegend().setXEntrySpace(3);
// ageChart.getLegend().setYEntrySpace(3);
ageChart.getLegend().setTextColor(Color.BLUE);
ageChart.setDescription("Income");
ageChart.setDescriptionTextSize(13);
ageChart.setDescriptionColor(Color.BLUE);
//get income chart data
PieData ageData = new PieData(xValsage,ageCounts);
ageData.setValueFormatter(new PercentFormatter());
ageData.setValueTextSize(11);
ageData.setValueTextColor(Color.BLUE);
ageChart.setData(ageData);
//refresh data
ageChart.invalidate();
}