+ constructor from base class in multiclass labels

shogun-toolbox · May 21, 2012 · 5f02a4a · 5f02a4a
1 parent e8a662e
commit 5f02a4a
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diff --git a/src/shogun/labels/MulticlassLabels.cpp b/src/shogun/labels/MulticlassLabels.cpp
@@ -21,6 +21,11 @@ CMulticlassLabels::CMulticlassLabels(CFile* loader) : CDenseLabels(loader)
 {
 }
 
+CMulticlassLabels::CMulticlassLabels(CLabels* const base_labels) : CDenseLabels()
+{
+	m_labels = ((CMulticlassLabels*) base_labels)->m_labels; 
+}
+
 bool CMulticlassLabels::is_valid()
 {       
     ASSERT(m_labels.vector);

diff --git a/src/shogun/labels/MulticlassLabels.h b/src/shogun/labels/MulticlassLabels.h
@@ -54,6 +54,12 @@ class CMulticlassLabels : public CDenseLabels
 		 */
 		CMulticlassLabels(CFile* loader);
 
+		/** constructor (can be used to downcast CLabels) 
+		 *
+		 * @param labs its dynamic type must be CMulticlassLabels
+		 */
+		CMulticlassLabels(CLabels* const base_labels);
+
 		/** is_valid checks if labeling is a multi-class labeling
 		 *
 		 * possible with subset