ENH: added a SetNumberOfRows() method.

Filtering/vtkTable.cxx

@@ -35,7 +35,7 @@
 // Standard functions
 //
 
-vtkCxxRevisionMacro(vtkTable, "1.29");
+vtkCxxRevisionMacro(vtkTable, "1.30");
 vtkStandardNewMacro(vtkTable);
 vtkCxxSetObjectMacro(vtkTable, RowData, vtkDataSetAttributes);
 
@@ -179,6 +179,15 @@ vtkIdType vtkTable::GetNumberOfRows()
   return 0;
 }
 
+//----------------------------------------------------------------------------
+void vtkTable::SetNumberOfRows( vtkIdType n )
+{
+  if( this->RowData )
+    {
+      this->RowData->SetNumberOfTuples( n );
+    }
+}
+
 //----------------------------------------------------------------------------
 vtkVariantArray* vtkTable::GetRow(vtkIdType row)
 {

Filtering/vtkTable.h

@@ -90,6 +90,11 @@ public:
   // Get the number of rows in the table.
   vtkIdType GetNumberOfRows();
 
+  // Description:
+  // Set the number of rows in the table. Note that memory allocation might be performed
+  // as a result of this, but no memory will be released. 
+  void SetNumberOfRows(const vtkIdType );
+
   // Description:
   // Get a row of the table as a vtkVariantArray which has one entry for each column.
   // NOTE: This version of the method is NOT thread safe.
@@ -124,7 +129,6 @@ public:
   // Get the number of columns in the table.
   vtkIdType GetNumberOfColumns();
 
-  // Description:
   // Get the name of a column of the table.
   const char* GetColumnName(vtkIdType col);