From aebe5e38da4b0bb440002fd911148e95a7cbe75d Mon Sep 17 00:00:00 2001
From: Emmanuel Christophe <emmanuel.christophe@orfeo-toolbox.org>
Date: Wed, 20 Jan 2010 15:29:30 +0800
Subject: [PATCH] DOC: fix bug #0000144, additional explanations

---
 Examples/FeatureExtraction/ExtractRoadByStepsExample.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Examples/FeatureExtraction/ExtractRoadByStepsExample.cxx b/Examples/FeatureExtraction/ExtractRoadByStepsExample.cxx
index ce451b6866..815ac1171b 100755
--- a/Examples/FeatureExtraction/ExtractRoadByStepsExample.cxx
+++ b/Examples/FeatureExtraction/ExtractRoadByStepsExample.cxx
@@ -106,6 +106,9 @@ int main( int argc, char * argv[] )
   OutputVectorImageType> VectorRescalerType;
   typedef otb::MultiChannelExtractROI<unsigned char,unsigned char> ChannelExtractorType;
 
+  // The GenerateOutputInformation() information is required here so
+  // that the number of component per pixel is update and known to set
+  // up the maximum and minimum values for the rescaling filter
   multispectralReader->GenerateOutputInformation();
 
   OutputVectorImageType::PixelType minimum,maximum;
-- 
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