From 095060ea73bcfcddcd2338a34c42feb56124d7b2 Mon Sep 17 00:00:00 2001
From: Emmanuel Christophe <emmanuel.christophe@orfeo-toolbox.org>
Date: Fri, 5 Dec 2008 16:27:51 +0800
Subject: [PATCH] ENH: Adding example for point set reader
---
Examples/IO/CMakeLists.txt | 3 +
Examples/IO/LidarReaderExample.cxx | 101 +++++++++++++++++++++++++++++
2 files changed, 104 insertions(+)
create mode 100644 Examples/IO/LidarReaderExample.cxx
diff --git a/Examples/IO/CMakeLists.txt b/Examples/IO/CMakeLists.txt
index ffd0465a66..378ebee063 100644
--- a/Examples/IO/CMakeLists.txt
+++ b/Examples/IO/CMakeLists.txt
@@ -61,6 +61,9 @@ TARGET_LINK_LIBRARIES(DEMToImageGenerator OTBProjections OTBIO OTBCommon ITKComm
ADD_EXECUTABLE(DEMToOrthoImageGenerator DEMToOrthoImageGenerator.cxx )
TARGET_LINK_LIBRARIES(DEMToOrthoImageGenerator OTBProjections OTBIO OTBCommon ITKCommon ITKIO otbossim )
+ADD_EXECUTABLE(LidarReaderExample LidarReaderExample.cxx )
+TARGET_LINK_LIBRARIES(LidarReaderExample OTBIO OTBCommon ITKCommon ITKIO otbossim )
+
IF(ITK_USE_REVIEW)
ADD_EXECUTABLE(LidarToImageExample LidarToImageExample.cxx )
TARGET_LINK_LIBRARIES(LidarToImageExample OTBIO OTBCommon ITKCommon ITKIO otbossim )
diff --git a/Examples/IO/LidarReaderExample.cxx b/Examples/IO/LidarReaderExample.cxx
new file mode 100644
index 0000000000..5309b7b7f6
--- /dev/null
+++ b/Examples/IO/LidarReaderExample.cxx
@@ -0,0 +1,101 @@
+/*=========================================================================
+
+ Program: ORFEO Toolbox
+ Language: C++
+ Date: $Date$
+ Version: $Revision$
+
+
+ Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
+ See OTBCopyright.txt for details.
+
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the above copyright notices for more information.
+
+=========================================================================*/
+
+// Software Guide : BeginCommandLineArgs
+// INPUTS: {srs.las}
+// Software Guide : EndCommandLineArgs
+
+
+// Software Guide : BeginLatex
+//
+// This example describes how to read a lidar data file and to display the basic
+// information about it. Here, OTB make use of libLAS.
+//
+// The first step toward the use of these filters is to include the proper header files.
+//
+// Software Guide : EndLatex
+
+// Software Guide : BeginCodeSnippet
+#include "otbPointSetFileReader.h"
+#include "itkPointSet.h"
+#include <fstream>
+int main(int argc, char * argv[])
+{
+// Software Guide : EndCodeSnippet
+
+// Software Guide : BeginLatex
+//
+// We need now to declare the data types that we will be using and instanciate the
+// reader (which is a \doxygen{otb}{PointSetFileReader}).
+//
+// Software Guide : EndLatex
+
+// Software Guide : BeginCodeSnippet
+ typedef itk::PointSet <double, 2> PointSetType;
+ typedef otb::PointSetFileReader<PointSetType> PointSetFileReaderType;
+ PointSetFileReaderType::Pointer reader = PointSetFileReaderType::New();
+
+ reader->SetFileName(argv[1]);
+ reader->Update();
+// Software Guide : EndCodeSnippet
+
+// Software Guide : BeginLatex
+//
+// We can already display some interesting information such as the
+// data extension and the number of points:
+//
+// Software Guide : EndLatex
+
+ // Software Guide : BeginCodeSnippet
+ std::cout << "*** Data area *** " << std::endl;
+ std::cout << std::setprecision(15);
+ std::cout << " - Easting min: " << reader->GetMinX() << std::endl;
+ std::cout << " - Easting max: " << reader->GetMaxX() << std::endl;
+ std::cout << " - Northing min: " << reader->GetMinY() << std::endl;
+ std::cout << " - Northing max: " << reader->GetMaxY() << std::endl;
+ std::cout << "Data points: " << reader->GetNumberOfPoints() << std::endl;
+ // Software Guide : EndCodeSnippet
+
+
+ // Software Guide : BeginLatex
+//
+// We can also loop on the point to see each point with its coordinates and
+// value. Be careful here, data set can have hundred of thousands of points:
+//
+// Software Guide : EndLatex
+
+ // Software Guide : BeginCodeSnippet
+ PointSetType::Pointer data = reader->GetOutput();
+
+ unsigned long nPoints = data->GetNumberOfPoints();
+
+ for(unsigned long i=0; i < nPoints; ++i)
+ {
+ PointSetType::PointType point;
+ data->GetPoint(i,&point);
+ std::cout << point << " : ";
+ PointSetType::PixelType value;
+ data->GetPointData(i,&value);
+ std::cout << value << std::endl;
+ }
+
+ return EXIT_SUCCESS;
+}
+// Software Guide : EndCodeSnippet
+
+
--
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