diff --git a/Classes/PHPExcel/Worksheet/AutoFilter.php b/Classes/PHPExcel/Worksheet/AutoFilter.php
index 5d2360a..e84ff21 100644
--- a/Classes/PHPExcel/Worksheet/AutoFilter.php
+++ b/Classes/PHPExcel/Worksheet/AutoFilter.php
@@ -235,6 +235,7 @@ class PHPExcel_Worksheet_AutoFilter
 			$pColumn->setParent($this);
 			$this->_columns[$column] = $pColumn;
 		}
+		ksort($this->_columns);
 
 		return $this;
 	}
@@ -277,6 +278,8 @@ class PHPExcel_Worksheet_AutoFilter
 			$this->_columns[$toColumn] = $this->_columns[$fromColumn];
 			$this->_columns[$toColumn]->setParent($this);
 			unset($this->_columns[$fromColumn]);
+
+			ksort($this->_columns);
 		}
 
 		return $this;
@@ -350,6 +353,7 @@ class PHPExcel_Worksheet_AutoFilter
 	private static function _filterTestInCustomDataSet($cellValue,$ruleSet)
 	{
 		//	Blank cells are always ignored, so return a FALSE
+		//	TODO a rule of notEqual ' ' overrides this, unsure how to handle it at this point
 		if (($cellValue == '') || ($cellValue === NULL)) {
 			return FALSE;
 		}
@@ -583,7 +587,7 @@ class PHPExcel_Worksheet_AutoFilter
 		list($rangeStart,$rangeEnd) = PHPExcel_Cell::rangeBoundaries($this->_range);
 
 		//	The heading row should always be visible
-//		echo 'AutoFilter Heading Row ',$rangeStart[1],' is always SHOWN',PHP_EOL;
+		echo 'AutoFilter Heading Row ',$rangeStart[1],' is always SHOWN',PHP_EOL;
 		$this->_workSheet->getRowDimension($rangeStart[1])->setVisible(TRUE);
 
 		$columnFilterTests = array();
@@ -759,17 +763,17 @@ class PHPExcel_Worksheet_AutoFilter
 			}
 		}
 
-//		echo 'Column Filter Test CRITERIA',PHP_EOL;
-//		var_dump($columnFilterTests);
-//
+		echo 'Column Filter Test CRITERIA',PHP_EOL;
+		var_dump($columnFilterTests);
+
 		//	Execute the column tests for each row in the autoFilter range to determine show/hide,
 		for ($row = $rangeStart[1]+1; $row <= $rangeEnd[1]; ++$row) {
-//			echo 'Testing Row = ',$row,PHP_EOL;
+			echo 'Testing Row = ',$row,PHP_EOL;
 			$result = TRUE;
 			foreach($columnFilterTests as $columnID => $columnFilterTest) {
-//				echo 'Testing cell ',$columnID.$row,PHP_EOL;
+				echo 'Testing cell ',$columnID.$row,PHP_EOL;
 				$cellValue = $this->_workSheet->getCell($columnID.$row)->getCalculatedValue();
-//				echo 'Value is ',$cellValue,PHP_EOL;
+				echo 'Value is ',$cellValue,PHP_EOL;
 				//	Execute the filter test
 				$result = $result &&
 					call_user_func_array(
@@ -779,13 +783,13 @@ class PHPExcel_Worksheet_AutoFilter
 							$columnFilterTest['arguments']
 						)
 					);
-//				echo (($result) ? 'VALID' : 'INVALID'),PHP_EOL;
+				echo (($result) ? 'VALID' : 'INVALID'),PHP_EOL;
 				//	If filter test has resulted in FALSE, exit the loop straightaway rather than running any more tests
 				if (!$result)
 					break;
 			}
 			//	Set show/hide for the row based on the result of the autoFilter result
-//			echo (($result) ? 'SHOW' : 'HIDE'),PHP_EOL;
+			echo (($result) ? 'SHOW' : 'HIDE'),PHP_EOL;
 			$this->_workSheet->getRowDimension($row)->setVisible($result);
 		}
 
diff --git a/Tests/33chartcreate-area.php b/Tests/33chartcreate-area.php
new file mode 100644
index 0000000..0a00e65
--- /dev/null
+++ b/Tests/33chartcreate-area.php
@@ -0,0 +1,144 @@
+<?php
+
+/** Error reporting */
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+date_default_timezone_set('Europe/London');
+
+define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
+
+date_default_timezone_set('Europe/London');
+
+/**
+ * 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
+ * @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    ##VERSION##, ##DATE##
+ */
+
+/** Include path **/
+set_include_path(get_include_path() . PATH_SEPARATOR . '../Classes/');
+
+/** PHPExcel */
+include 'PHPExcel.php';
+
+$objPHPExcel = new PHPExcel();
+$objWorksheet = $objPHPExcel->getActiveSheet();
+$objWorksheet->fromArray(
+	array(
+		array('',	2010,	2011,	2012),
+		array('Q1',   12,   15,		21),
+		array('Q2',   56,   73,		86),
+		array('Q3',   52,   61,		69),
+		array('Q4',   30,   32,		0),
+	)
+);
+
+//	Set the Labels for each data series we want to plot
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$dataseriesLabels = array(
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$B$1', null, 1),	//	2010
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$C$1', null, 1),	//	2011
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$D$1', null, 1),	//	2012
+);
+//	Set the X-Axis Labels
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$xAxisTickValues = array(
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$A$2:$A$5', null, 4),	//	Q1 to Q4
+);
+//	Set the Data values for each data series we want to plot
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$dataSeriesValues = array(
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$B$2:$B$5', null, 4),
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$C$2:$C$5', null, 4),
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$D$2:$D$5', null, 4),
+);
+
+//	Build the dataseries
+$series = new PHPExcel_Chart_DataSeries(
+	PHPExcel_Chart_DataSeries::TYPE_AREACHART,				// plotType
+	PHPExcel_Chart_DataSeries::GROUPING_PERCENT_STACKED,	// plotGrouping
+	range(0, count($dataSeriesValues)-1),					// plotOrder
+	$dataseriesLabels,										// plotLabel
+	$xAxisTickValues,										// plotCategory
+	$dataSeriesValues										// plotValues
+);
+
+//	Set the series in the plot area
+$plotarea = new PHPExcel_Chart_PlotArea(null, array($series));
+//	Set the chart legend
+$legend = new PHPExcel_Chart_Legend(PHPExcel_Chart_Legend::POSITION_TOPRIGHT, null, false);
+
+$title = new PHPExcel_Chart_Title('Test Chart');
+$yAxisLabel = new PHPExcel_Chart_Title('Value ($k)');
+
+
+//	Create the chart
+$chart = new PHPExcel_Chart(
+	'chart1',		// name
+	$title,			// title
+	$legend,		// legend
+	$plotarea,		// plotArea
+	true,			// plotVisibleOnly
+	0,				// displayBlanksAs
+	null,			// xAxisLabel
+	$yAxisLabel		// yAxisLabel
+);
+
+//	Set the position where the chart should appear in the worksheet
+$chart->setTopLeftPosition('A7');
+$chart->setBottomRightPosition('H20');
+
+//	Add the chart to the worksheet
+$objWorksheet->addChart($chart);
+
+
+// Save Excel 2007 file
+echo date('H:i:s') , " Write to Excel2007 format" , EOL;
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->setIncludeCharts(TRUE);
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing file" , EOL;
+echo 'File has been created in ' , getcwd() , EOL;
diff --git a/Tests/33chartcreate-bar.php b/Tests/33chartcreate-bar.php
new file mode 100644
index 0000000..f80649d
--- /dev/null
+++ b/Tests/33chartcreate-bar.php
@@ -0,0 +1,147 @@
+<?php
+
+/** Error reporting */
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+date_default_timezone_set('Europe/London');
+
+define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
+
+date_default_timezone_set('Europe/London');
+
+/**
+ * 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
+ * @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    ##VERSION##, ##DATE##
+ */
+
+/** Include path **/
+set_include_path(get_include_path() . PATH_SEPARATOR . '../Classes/');
+
+/** PHPExcel */
+include 'PHPExcel.php';
+
+$objPHPExcel = new PHPExcel();
+$objWorksheet = $objPHPExcel->getActiveSheet();
+$objWorksheet->fromArray(
+	array(
+		array('',	2010,	2011,	2012),
+		array('Q1',   12,   15,		21),
+		array('Q2',   56,   73,		86),
+		array('Q3',   52,   61,		69),
+		array('Q4',   30,   32,		0),
+	)
+);
+
+//	Set the Labels for each data series we want to plot
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$dataseriesLabels = array(
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$B$1', null, 1),	//	2010
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$C$1', null, 1),	//	2011
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$D$1', null, 1),	//	2012
+);
+//	Set the X-Axis Labels
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$xAxisTickValues = array(
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$A$2:$A$5', null, 4),	//	Q1 to Q4
+);
+//	Set the Data values for each data series we want to plot
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$dataSeriesValues = array(
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$B$2:$B$5', null, 4),
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$C$2:$C$5', null, 4),
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$D$2:$D$5', null, 4),
+);
+
+//	Build the dataseries
+$series = new PHPExcel_Chart_DataSeries(
+	PHPExcel_Chart_DataSeries::TYPE_BARCHART,		// plotType
+	PHPExcel_Chart_DataSeries::GROUPING_CLUSTERED,	// plotGrouping
+	range(0, count($dataSeriesValues)-1),			// plotOrder
+	$dataseriesLabels,								// plotLabel
+	$xAxisTickValues,								// plotCategory
+	$dataSeriesValues								// plotValues
+);
+//	Set additional dataseries parameters
+//		Make it a horizontal bar rather than a vertical column graph
+$series->setPlotDirection(PHPExcel_Chart_DataSeries::DIRECTION_BAR);
+
+//	Set the series in the plot area
+$plotarea = new PHPExcel_Chart_PlotArea(null, array($series));
+//	Set the chart legend
+$legend = new PHPExcel_Chart_Legend(PHPExcel_Chart_Legend::POSITION_RIGHT, null, false);
+
+$title = new PHPExcel_Chart_Title('Test Chart');
+$yAxisLabel = new PHPExcel_Chart_Title('Value ($k)');
+
+
+//	Create the chart
+$chart = new PHPExcel_Chart(
+	'chart1',		// name
+	$title,			// title
+	$legend,		// legend
+	$plotarea,		// plotArea
+	true,			// plotVisibleOnly
+	0,				// displayBlanksAs
+	null,			// xAxisLabel
+	$yAxisLabel		// yAxisLabel
+);
+
+//	Set the position where the chart should appear in the worksheet
+$chart->setTopLeftPosition('A7');
+$chart->setBottomRightPosition('H20');
+
+//	Add the chart to the worksheet
+$objWorksheet->addChart($chart);
+
+
+// Save Excel 2007 file
+echo date('H:i:s') , " Write to Excel2007 format" , EOL;
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->setIncludeCharts(TRUE);
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing file" , EOL;
+echo 'File has been created in ' , getcwd() , EOL;
diff --git a/Tests/33chartcreate.php b/Tests/33chartcreate-column.php
similarity index 100%
rename from Tests/33chartcreate.php
rename to Tests/33chartcreate-column.php
diff --git a/Tests/33chartcreate-line.php b/Tests/33chartcreate-line.php
new file mode 100644
index 0000000..def7b3a
--- /dev/null
+++ b/Tests/33chartcreate-line.php
@@ -0,0 +1,144 @@
+<?php
+
+/** Error reporting */
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+date_default_timezone_set('Europe/London');
+
+define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
+
+date_default_timezone_set('Europe/London');
+
+/**
+ * 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
+ * @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    ##VERSION##, ##DATE##
+ */
+
+/** Include path **/
+set_include_path(get_include_path() . PATH_SEPARATOR . '../Classes/');
+
+/** PHPExcel */
+include 'PHPExcel.php';
+
+$objPHPExcel = new PHPExcel();
+$objWorksheet = $objPHPExcel->getActiveSheet();
+$objWorksheet->fromArray(
+	array(
+		array('',	2010,	2011,	2012),
+		array('Q1',   12,   15,		21),
+		array('Q2',   56,   73,		86),
+		array('Q3',   52,   61,		69),
+		array('Q4',   30,   32,		0),
+	)
+);
+
+//	Set the Labels for each data series we want to plot
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$dataseriesLabels = array(
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$B$1', null, 1),	//	2010
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$C$1', null, 1),	//	2011
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$D$1', null, 1),	//	2012
+);
+//	Set the X-Axis Labels
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$xAxisTickValues = array(
+	new PHPExcel_Chart_DataSeriesValues('String', 'Worksheet!$A$2:$A$5', null, 4),	//	Q1 to Q4
+);
+//	Set the Data values for each data series we want to plot
+//		Datatype
+//		Cell reference for data
+//		Format Code
+//		Number of datapoints in series
+//		Data values
+//		Data Marker
+$dataSeriesValues = array(
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$B$2:$B$5', null, 4),
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$C$2:$C$5', null, 4),
+	new PHPExcel_Chart_DataSeriesValues('Number', 'Worksheet!$D$2:$D$5', null, 4),
+);
+
+//	Build the dataseries
+$series = new PHPExcel_Chart_DataSeries(
+	PHPExcel_Chart_DataSeries::TYPE_LINECHART,		// plotType
+	PHPExcel_Chart_DataSeries::GROUPING_STACKED,	// plotGrouping
+	range(0, count($dataSeriesValues)-1),			// plotOrder
+	$dataseriesLabels,								// plotLabel
+	$xAxisTickValues,								// plotCategory
+	$dataSeriesValues								// plotValues
+);
+
+//	Set the series in the plot area
+$plotarea = new PHPExcel_Chart_PlotArea(null, array($series));
+//	Set the chart legend
+$legend = new PHPExcel_Chart_Legend(PHPExcel_Chart_Legend::POSITION_TOPRIGHT, null, false);
+
+$title = new PHPExcel_Chart_Title('Test Chart');
+$yAxisLabel = new PHPExcel_Chart_Title('Value ($k)');
+
+
+//	Create the chart
+$chart = new PHPExcel_Chart(
+	'chart1',		// name
+	$title,			// title
+	$legend,		// legend
+	$plotarea,		// plotArea
+	true,			// plotVisibleOnly
+	0,				// displayBlanksAs
+	null,			// xAxisLabel
+	$yAxisLabel		// yAxisLabel
+);
+
+//	Set the position where the chart should appear in the worksheet
+$chart->setTopLeftPosition('A7');
+$chart->setBottomRightPosition('H20');
+
+//	Add the chart to the worksheet
+$objWorksheet->addChart($chart);
+
+
+// Save Excel 2007 file
+echo date('H:i:s') , " Write to Excel2007 format" , EOL;
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->setIncludeCharts(TRUE);
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing file" , EOL;
+echo 'File has been created in ' , getcwd() , EOL;
diff --git a/Tests/runall.php b/Tests/runall.php
index 1e94a2a..d36cf81 100644
--- a/Tests/runall.php
+++ b/Tests/runall.php
@@ -72,7 +72,10 @@ $aTests = array(
 	, '31docproperties_write.php'
 	, '31docproperties_write-xls.php'
 	, '32chartreadwrite.php'
-	, '33chartcreate.php'
+	, '33chartcreate-area.php'
+	, '33chartcreate-bar.php'
+	, '33chartcreate-column.php'
+	, '33chartcreate-line.php'
 	, '34chartupdate.php'
 	, 'OOCalcReader.php'
 	, 'SylkReader.php'