From f65dfa951ecaf42e53c5e30a3d81356cc4ff2090 Mon Sep 17 00:00:00 2001
From: Mark Baker <mark@lange.demon.co.uk>
Date: Wed, 28 Mar 2012 12:02:24 +0000
Subject: [PATCH] Fix when format is not defined for data series values, thanks
 to pnomolos

git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@88558 2327b42d-5241-43d6-9e2a-de5ac946f064
---
 Classes/PHPExcel/Writer/Excel2007/Chart.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Classes/PHPExcel/Writer/Excel2007/Chart.php b/Classes/PHPExcel/Writer/Excel2007/Chart.php
index 35ca564d..e5bf00db 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Chart.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Chart.php
@@ -940,9 +940,11 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 						($groupType != PHPExcel_Chart_DataSeries::TYPE_PIECHART_3D) &&
 						($groupType != PHPExcel_Chart_DataSeries::TYPE_DONUTCHART)) {
 
-						$objWriter->startElement('c:formatCode');
-							$objWriter->writeRawData( $plotSeriesValues->getFormatCode() );
-						$objWriter->endElement();
+						if ($plotSeriesValues->getFormatCode() !== NULL) {
+							$objWriter->startElement('c:formatCode');
+								$objWriter->writeRawData( $plotSeriesValues->getFormatCode() );
+							$objWriter->endElement();
+						}
 					}
 
 					$objWriter->startElement('c:ptCount');