CODEWITHSUNDEEP
javaandroidgraphbar-chartmpandroidchart
ankit
ankit

Reputation: 125

Show only some values in MPAndroidChart

I have an array of y values that I am displaying over the dates of a month. To simplify, for the first week of April, I would have the values {0,200,0,0,500,0,100} over the x values {1,2,3,4,5,6,7}. I am able to display them as a bar chart using MPAndroidChart. I am also able to hide and display the values over each bar using 

barChart.getData().setDrawValues(true); //or false when I want to hide

However, I want to display only the number that are non-zero, how would I be able to do so? Any pointers would be appreciated!

I tried creating my formatter the following way:

public class MyYAxisValueFormatter implements IAxisValueFormatter {

        private DecimalFormat mFormat;

        public MyYAxisValueFormatter() {
        // format values to 1 decimal digit
            mFormat = new DecimalFormat("###,###,##0.0");
        }

        @Override
        public String getFormattedValue(float value, AxisBase axis) {
            String val = "";

            if(value != 0)
                val = String.valueOf(value);

            return mFormat.format(value) + " $";
        }
    }

and called it using this in my main function:

YAxis yAxis = barChart.getAxisLeft();
yAxis.setValueFormatter(new MyYAxisValueFormatter());

However the values of zero are still displayed.

Upvotes: 0

Views: 3349

Answers (2)

Akshay Nandwana
Akshay Nandwana

Reputation: 1292

Try making your own IValueFormatter Interface

public class MyYAxisValueFormatter implements IValueFormatter {

        private DecimalFormat mFormat;

        public MyYAxisValueFormatter() {
        // format values to 1 decimal digit
            mFormat = new DecimalFormat("###,###,##0.0");
        }

        @Override
        public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
            // "value" represents the position of the label on the axis (x or y)
             if(value > 0) {
               return mFormat.format(value);
             } else {
               return "";
             }
        }
    }

try setting value formatter to your barchart.

bar.setValueFormatter(new MyYAxisValueFormatter ());

Upvotes: 2

Android Geek
Android Geek

Reputation: 9225

try this:

private class MyValueFormatter implements ValueFormatter {

    @Override
    public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
        // write your logic here
        if(value > 0)
            return value+"";
        else
            return "";
    }
}

OR

try this likn it helps you

https://github.com/PhilJay/MPAndroidChart/issues/2402

Upvotes: 0

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