[ADD #453] function that can return a WValue with double type for a

wvalueset.with any type.

src/dataHandler/WValueSet.h

@@ -176,6 +176,15 @@ public:
         return static_cast< double >( m_data[i] );
     }
 
+    /**
+     * \param i id of the WValue to retrieve
+     * \return The i-th WValue stored in this value set. There are size() such scalars.
+     */
+    virtual wmath::WValue< double > getWValueDouble( size_t i ) const
+    {
+        return wmath::WValue< double >( getWValue( i ) );
+    }
+
     /**
      * Get the i'th vector
      *

src/dataHandler/WValueSetBase.h

@@ -30,6 +30,7 @@
 
 #include <boost/variant.hpp>
 
+#include "../common/math/WValue.h"
 #include "WDataHandlerEnums.h"
 #include "WExportDataHandler.h"
 
@@ -86,6 +87,12 @@ public:
      */
     virtual double getScalarDouble( size_t i ) const = 0;
 
+    /**
+     * \param i id of the WValue to retrieve
+     * \return The i-th WValue stored in this value set. There are size() such scalars.
+     */
+    virtual wmath::WValue< double > getWValueDouble( size_t i ) const = 0;
+
     /**
      * \return Dimension of the values in this ValueSet
      */

src/dataHandler/test/WValueSetBase_test.h

@@ -92,6 +92,14 @@ public:
         return 255;
     }
 
+    /**
+     * \return The i-th WValue stored in this value set. There are size() such scalars.
+     */
+    virtual wmath::WValue< double > getWValueDouble( size_t /*i*/ ) const
+    {
+        return wmath::WValue< double >( size() );
+    }
+
     /**
      * This method returns the smallest value in the valueset. It does not handle vectors, matrices and so on well. It simply returns the
      * smallest value in the data array. This is especially useful for texture scaling or other statistic tools (histograms).