当前路径：Classes/PHPExcel/Chart/DataSeries.php
<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2015 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category    PHPExcel
 * @package        PHPExcel_Chart
 * @copyright    Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license        http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    ##VERSION##, ##DATE##
 */


/**
 * PHPExcel_Chart_DataSeries
 *
 * @category    PHPExcel
 * @package        PHPExcel_Chart
 * @copyright    Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Chart_DataSeries
{
    const TYPE_BARCHART        = 'barChart';
    const TYPE_BARCHART_3D     = 'bar3DChart';
    const TYPE_LINECHART       = 'lineChart';
    const TYPE_LINECHART_3D    = 'line3DChart';
    const TYPE_AREACHART       = 'areaChart';
    const TYPE_AREACHART_3D    = 'area3DChart';
    const TYPE_PIECHART        = 'pieChart';
    const TYPE_PIECHART_3D     = 'pie3DChart';
    const TYPE_DOUGHTNUTCHART  = 'doughnutChart';
    const TYPE_DONUTCHART      = self::TYPE_DOUGHTNUTCHART;    //    Synonym
    const TYPE_SCATTERCHART    = 'scatterChart';
    const TYPE_SURFACECHART    = 'surfaceChart';
    const TYPE_SURFACECHART_3D = 'surface...