added recarray conversion -- may still be copying

IPython/extensions/rmagic.py

@@ -184,6 +184,10 b' class RMagics(Magics):'
         '''
         outputs = line.split(' ')
         for output in outputs:
+            if self.r("is.data.frame({0})".format(output))[0]:
+                o = np.rec.fromarrays(self.r(output), names = tuple(self.r(output).names))
+                self.shell.push({output:self.Rconverter(o)})
+            else:
                 self.shell.push({output:self.Rconverter(self.r(output))})
 
 
@@ -371,7 +375,10 b' class RMagics(Magics):'
 
         if args.output:
             for output in ','.join(args.output).split(','):
-                # with self.shell, we assign the values to variables in the shell
+                if self.r("is.data.frame({0})".format(output))[0]:
+                    o = np.rec.fromarrays(self.r(output), names = tuple(self.r(output).names))
+                    self.shell.push({output:self.Rconverter(o)})
+                else:
                 self.shell.push({output:self.Rconverter(self.r(output))})
 
         for tag, disp_d in display_data: