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 (count > 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];
    }
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 (count > 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 (min == Infinity) {
                min = 0;
            }
            
            if (max == -Infinity) {
                max = count - 1;
            }
        } else {
            min = max = 0;
        }
        return [min, max];
    }
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 ( count > 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 ] ; }
Calculate the min and max values for this series's xField.
@return {Array} [min, max]
Calculate the min and max values for this series s xField .