1 files changed, 144 insertions, 0 deletions
diff --git a/manuals_and_examples/examples/c++/avg-cell-red.cc b/manuals_and_examples/examples/c++/avg-cell-red.cc
new file mode 100644
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+++ b/manuals_and_examples/examples/c++/avg-cell-red.cc
@@ -0,0 +1,144 @@
+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community 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 General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+/*************************************************************
+ *
+ *
+ * PURPOSE: 
+ * Example program for computing the avg cell value 
+ * for each image in a given 2-D RGB collection.
+ *
+ *
+ ************************************************************/
+
+#include <iostream>
+
+// Linux needs this for template instantiation
+#ifdef EARLY_TEMPLATE
+#define __EXECUTABLE__
+#ifdef __GNUG__
+#include "raslib/template_inst.hh"
+#endif
+#endif
+
+
+// rasdl generated data type file:
+// (contains predefined RGB pixel structure)
+#include "basictypes.hh"
+
+
+int main( int ac, char** av )
+{   
+  char rasmgrName[255];
+  int  rasmgrPort;
+  char baseName[255];
+  char collName[255];
+  char userName[255];
+  char userPass[255];
+  
+  double sum;
+   
+  if( ac != 7 )
+  {
+    cout << "Usage: avg-cell-red rasmgr_name rasmgr_port base_name collection_name user_name user_passwd" << endl;
+    return -1;
+  }
+
+  strcpy( rasmgrName, av[1] );
+  rasmgrPort = strtoul( av[2], NULL, 0);
+  strcpy( baseName,   av[3] );
+  strcpy( collName,   av[4] );
+  strcpy( userName,   av[5] );
+  strcpy( userPass,   av[6] );
+
+  r_Database                           database;
+  r_Transaction                        transaction;
+  r_Ref< r_Set< r_Ref< r_Marray< RGBPixel > > > > image_set;
+  r_Iterator< r_Ref< r_Marray< RGBPixel > > > iter;
+  r_Ref< r_Marray< RGBPixel > >               image;
+  r_Range                              i,j;
+  long 	                               pixelcount;
+
+  try
+  {
+    database.set_servername( rasmgrName, rasmgrPort );
+    database.set_useridentification( userName, userPass );
+  
+    cout << "Opening database " << baseName
+         << " on " << rasmgrName << "... " << flush;
+    database.open( baseName );
+    cout << "OK" << endl;
+  
+    cout << "Starting read-only transaction ... " << flush;
+    transaction.begin( r_Transaction::read_only );
+    cout << "OK" << endl;
+  
+    cout << "Looking up collection " << collName << " ..." << flush;
+    image_set = database.lookup_object( collName );
+    cout << "OK" << endl;
+ 
+    cout << "Collection contains " << image_set->cardinality() 
+         << " entries" << endl;
+
+    iter = image_set->create_iterator();
+    for( iter.reset(); iter.not_done(); iter++ )
+    {
+      RGBPixel pixel;
+      image = *iter;
+      sum = 0.0;
+      for ( i=image->spatial_domain()[0].low(); i<=image->spatial_domain()[0].high(); i++ )
+      {
+        for ( j=image->spatial_domain()[1].low(); j<=image->spatial_domain()[1].high(); j++ )
+        {
+          pixel = (*image)[ r_Point(i,j) ];
+          sum += pixel.red;
+        }
+      }
+      pixelcount = 
+        ( image->spatial_domain()[0].high() - image->spatial_domain()[0].low() + 1 )
+      * ( image->spatial_domain()[1].high() - image->spatial_domain()[1].low() + 1 );
+      cout << "  avg over " << pixelcount
+           << " red pixels is "
+           << sum / pixelcount
+           << endl << flush;   
+    }
+
+    cout << "Committing transaction ... " << flush;
+    transaction.commit();
+    cout << "OK" << endl;
+  
+    cout << "Closing database ... " << flush;
+    database.close();
+    cout << "OK" << endl;
+  }
+  catch( r_Error& errorObj )
+  {
+    cerr << errorObj.what() << endl;
+    return -1;
+  }
+    
+  return 0;
+}
+
+/* 
+ * end of avg-cell-red.cc
+ */