From f1f19691871cb85cda8e8fdc8c1f2479880936d1 Mon Sep 17 00:00:00 2001
From: Progi1984 <progi1984@gmail.com>
Date: Tue, 30 May 2017 13:45:23 +0200
Subject: [PATCH] #171 : PowerPoint2007 : Interval Unit in Axis-X

---
 samples/Sample_05_Chart_Line.php              | 26 ++++++++++++-------
 .../Writer/PowerPoint2007/PptCharts.php       |  7 +++++
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/samples/Sample_05_Chart_Line.php b/samples/Sample_05_Chart_Line.php
index c0c59ef44..b9b23e42a 100644
--- a/samples/Sample_05_Chart_Line.php
+++ b/samples/Sample_05_Chart_Line.php
@@ -35,15 +35,22 @@
 
 // Generate sample data for chart
 echo date('H:i:s') . ' Generate sample data for chart' . EOL;
-$seriesData = [
-    'Monday' => 12,
-    'Tuesday' => 15,
-    'Wednesday' => 13,
-    'Thursday' => 17,
-    'Friday' => 14,
-    'Saturday' => 9,
-    'Sunday' => 7,
-];
+$seriesData = array(
+    'Monday 01' => 12,
+    'Tuesday 02' => 15,
+    'Wednesday 03' => 13,
+    'Thursday 04' => 17,
+    'Friday 05' => 14,
+    'Saturday 06' => 9,
+    'Sunday 07' => 7,
+    'Monday 08' => 8,
+    'Tuesday 09' => 8,
+    'Wednesday 10' => 15,
+    'Thursday 11' => 16,
+    'Friday 12' => 14,
+    'Saturday 13' => 14,
+    'Sunday 14' => 13,
+);
 
 // Create templated slide
 echo EOL . date('H:i:s') . ' Create templated slide' . EOL;
@@ -71,6 +78,7 @@
 $shape->getView3D()->setPerspective(30);
 $shape->getLegend()->getBorder()->setLineStyle(Border::LINE_SINGLE);
 $shape->getLegend()->getFont()->setItalic(true);
+$shape->getPlotArea()->getAxisX()->setMajorUnit(5);
 
 // Create templated slide
 echo EOL . date('H:i:s') . ' Create templated slide' . EOL;
diff --git a/src/PhpPresentation/Writer/PowerPoint2007/PptCharts.php b/src/PhpPresentation/Writer/PowerPoint2007/PptCharts.php
index eab8f4b1f..ada5fb77b 100644
--- a/src/PhpPresentation/Writer/PowerPoint2007/PptCharts.php
+++ b/src/PhpPresentation/Writer/PowerPoint2007/PptCharts.php
@@ -2314,6 +2314,13 @@ protected function writeAxis(XMLWriter $objWriter, Chart\Axis $oAxis, string $ty
             $objWriter->startElement('c:lblOffset');
             $objWriter->writeAttribute('val', '100');
             $objWriter->endElement();
+
+            // c:majorUnit
+            if ($oAxis->getMajorUnit() != null) {
+                $objWriter->startElement('c:tickLblSkip');
+                $objWriter->writeAttribute('val', $oAxis->getMajorUnit());
+                $objWriter->endElement();
+            }
         }
 
         if (Chart\Axis::AXIS_Y == $typeAxis) {