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diff --git a/admin/survey/excel/PHPExcel/Chart/DataSeriesValues.php b/admin/survey/excel/PHPExcel/Chart/DataSeriesValues.php
deleted file mode 100644
index 223aa82..0000000
--- a/admin/survey/excel/PHPExcel/Chart/DataSeriesValues.php
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@@ -1,321 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 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 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version	1.7.8, 2012-10-12

- */

-

-

-/**

- * PHPExcel_Chart_DataSeriesValues

- *

- * @category	PHPExcel

- * @package		PHPExcel_Chart

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Chart_DataSeriesValues

-{

-

-	const DATASERIES_TYPE_STRING	= 'String';

-	const DATASERIES_TYPE_NUMBER	= 'Number';

-

-	private static $_dataTypeValues = array(

-		self::DATASERIES_TYPE_STRING,

-		self::DATASERIES_TYPE_NUMBER,

-	);

-

-	/**

-	 * Series Data Type

-	 *

-	 * @var	string

-	 */

-	private $_dataType = null;

-

-	/**

-	 * Series Data Source

-	 *

-	 * @var	string

-	 */

-	private $_dataSource = null;

-

-	/**

-	 * Format Code

-	 *

-	 * @var	string

-	 */

-	private $_formatCode = null;

-

-	/**

-	 * Series Point Marker

-	 *

-	 * @var	string

-	 */

-	private $_marker = null;

-

-	/**

-	 * Point Count (The number of datapoints in the dataseries)

-	 *

-	 * @var	integer

-	 */

-	private $_pointCount = 0;

-

-	/**

-	 * Data Values

-	 *

-	 * @var	array of mixed

-	 */

-	private $_dataValues = array();

-

-	/**

-	 * Create a new PHPExcel_Chart_DataSeriesValues object

-	 */

-	public function __construct($dataType = self::DATASERIES_TYPE_NUMBER, $dataSource = null, $formatCode = null, $pointCount = 0, $dataValues = array(), $marker = null)

-	{

-		$this->setDataType($dataType);

-		$this->_dataSource = $dataSource;

-		$this->_formatCode = $formatCode;

-		$this->_pointCount = $pointCount;

-		$this->_dataValues = $dataValues;

-		$this->_marker = $marker;

-	}

-

-	/**

-	 * Get Series Data Type

-	 *

-	 * @return	string

-	 */

-	public function getDataType() {

-		return $this->_dataType;

-	}

-

-	/**

-	 * Set Series Data Type

-	 *

-	 * @param	string	$dataType	Datatype of this data series

-	 *								Typical values are:

-	 *									PHPExcel_Chart_DataSeriesValues::DATASERIES_TYPE_STRING

-	 *										Normally used for axis point values

-	 *									PHPExcel_Chart_DataSeriesValues::DATASERIES_TYPE_NUMBER

-	 *										Normally used for chart data values

-	 * @return	PHPExcel_Chart_DataSeriesValues

-	 */

-	public function setDataType($dataType = self::DATASERIES_TYPE_NUMBER) {

-		if (!in_array($dataType, self::$_dataTypeValues)) {

-    		throw new PHPExcel_Chart_Exception('Invalid datatype for chart data series values');

-		}

-		$this->_dataType = $dataType;

-

-		return $this;

-	}

-

-	/**

-	 * Get Series Data Source (formula)

-	 *

-	 * @return	string

-	 */

-	public function getDataSource() {

-		return $this->_dataSource;

-	}

-

-	/**

-	 * Set Series Data Source (formula)

-	 *

-	 * @param	string	$dataSource

-	 * @return	PHPExcel_Chart_DataSeriesValues

-	 */

-	public function setDataSource($dataSource = null, $refreshDataValues = true) {

-		$this->_dataSource = $dataSource;

-

-		if ($refreshDataValues) {

-			//	TO DO

-		}

-

-		return $this;

-	}

-

-	/**

-	 * Get Point Marker

-	 *

-	 * @return string

-	 */

-	public function getPointMarker() {

-		return $this->_marker;

-	}

-

-	/**

-	 * Set Point Marker

-	 *

-	 * @param	string	$marker

-	 * @return	PHPExcel_Chart_DataSeriesValues

-	 */

-	public function setPointMarker($marker = null) {

-		$this->_marker = $marker;

-

-		return $this;

-	}

-

-	/**

-	 * Get Series Format Code

-	 *

-	 * @return	string

-	 */

-	public function getFormatCode() {

-		return $this->_formatCode;

-	}

-

-	/**

-	 * Set Series Format Code

-	 *

-	 * @param	string	$formatCode

-	 * @return	PHPExcel_Chart_DataSeriesValues

-	 */

-	public function setFormatCode($formatCode = null) {

-		$this->_formatCode = $formatCode;

-

-		return $this;

-	}

-

-	/**

-	 * Get Series Point Count

-	 *

-	 * @return	integer

-	 */

-	public function getPointCount() {

-		return $this->_pointCount;

-	}

-

-	/**

-	 * Identify if the Data Series is a multi-level or a simple series

-	 *

-	 * @return	boolean

-	 */

-	public function isMultiLevelSeries() {

-		if (count($this->_dataValues) > 0) {

-			return is_array($this->_dataValues[0]);

-		}

-		return null;

-	}

-

-	/**

-	 * Return the level count of a multi-level Data Series

-	 *

-	 * @return	boolean

-	 */

-	public function multiLevelCount() {

-		$levelCount = 0;

-		foreach($this->_dataValues as $dataValueSet) {

-			$levelCount = max($levelCount,count($dataValueSet));

-		}

-		return $levelCount;

-	}

-

-	/**

-	 * Get Series Data Values

-	 *

-	 * @return	array of mixed

-	 */

-	public function getDataValues() {

-		return $this->_dataValues;

-	}

-

-	/**

-	 * Get the first Series Data value

-	 *

-	 * @return	mixed

-	 */

-	public function getDataValue() {

-		$count = count($this->_dataValues);

-		if ($count == 0) {

-			return null;

-		} elseif ($count == 1) {

-			return $this->_dataValues[0];

-		}

-		return $this->_dataValues;

-	}

-

-	/**

-	 * Set Series Data Values

-	 *

-	 * @param	array	$dataValues

-	 * @param	boolean	$refreshDataSource

-	 *					TRUE - refresh the value of _dataSource based on the values of $dataValues

-	 *					FALSE - don't change the value of _dataSource

-	 * @return	PHPExcel_Chart_DataSeriesValues

-	 */

-	public function setDataValues($dataValues = array(), $refreshDataSource = TRUE) {

-		$this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($dataValues);

-		$this->_pointCount = count($dataValues);

-

-		if ($refreshDataSource) {

-			//	TO DO

-		}

-

-		return $this;

-	}

-

-	private function _stripNulls($var) {

-		return $var !== NULL;

-	}

-

-	public function refresh(PHPExcel_Worksheet $worksheet, $flatten = TRUE) {

-        if ($this->_dataSource !== NULL) {

-        	$calcEngine = PHPExcel_Calculation::getInstance();

-			$newDataValues = PHPExcel_Calculation::_unwrapResult(

-			    $calcEngine->_calculateFormulaValue(

-			        '='.$this->_dataSource,

-			        NULL,

-			        $worksheet->getCell('A1')

-			    )

-			);

-			if ($flatten) {

-				$this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($newDataValues);

-			} else {

-				$cellRange = explode('!',$this->_dataSource);

-				if (count($cellRange) > 1) {

-					list(,$cellRange) = $cellRange;

-				}

-

-				$dimensions = PHPExcel_Cell::rangeDimension(str_replace('$','',$cellRange));

-				if (($dimensions[0] == 1) || ($dimensions[1] == 1)) {

-					$this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($newDataValues);

-				} else {

-					$newArray = array_values(array_shift($newDataValues));

-					foreach($newArray as $i => $newDataSet) {

-						$newArray[$i] = array($newDataSet);

-					}

-

-					foreach($newDataValues as $newDataSet) {

-						$i = 0;

-						foreach($newDataSet as $newDataVal) {

-							array_unshift($newArray[$i++],$newDataVal);

-						}

-					}

-					$this->_dataValues = $newArray;

-				}

-			}

-			$this->_pointCount = count($this->_dataValues);

-		}

-

-	}

-

-}