question: protected void calculateFormatter ( float min , float max ) { float reference = 0f ; if ( mData == null || mData . getXValCount ( ) < 2 ) { reference = Math . max ( Math . abs ( min ) , Math . abs ( max ) ) ; } else { reference = Math . abs ( max - min ) ; } int digits = Utils . getDecimals ( reference ) ; mDefaultFormatter = new DefaultValueFormatter ( digits ) ; }
target:  calculates the required number of digits for the values that might be drawn in the chart (if enabled), and creates the default-value-formatter