nl_tokens: Calculate the min and max values for this series s xField .
pl_tokens: function ( ) { var me = this , chart = me . chart , store = chart . getChartStore ( ) , data = store . data . items , count = me . getRecordCount ( ) , i , ln , record , min , max , xField = me . xField , xValue ; if ( <mask> > 0 ) { min = Infinity ; max = - min ; for ( i = 0 , ln = data . length ; i < ln ; i ++ ) { record = data [ i ] ; xValue = record . get ( xField ) ; if ( xValue > max ) { max = xValue ; } if ( xValue < min ) { min = xValue ; } } // If we made no progress, treat it like a category axis if ( min == Infinity ) { min = 0 ; } if ( max == - Infinity ) { max = count - 1 ; } } else { min = max = 0 ; } return [ min , max ] ; }