@@ -227,35 +227,14 @@ class Learner1D(BaseLearner):

         real = y is not None

         if real:

-            # Add point to the real data dict and pop from the unfinished

-            # data_interp dict.

+            # Add point to the real data dict

             self.data[x] = y

-            self.data_interp.pop(x, None)

             if self._vdim is None:

                 try:

                     self._vdim = len(np.squeeze(y))

                 except TypeError:

                     self._vdim = 1

-

-            # Invalidate interpolated neighbors of new point

-            i = self.data.bisect_left(x)

-            if i == 0:

-                x_left = self.data.iloc[0]

-                for _x in self.data_interp:

-                    if _x < x_left:

-                        self.data_interp[_x] = None

-            elif i == len(self.data):

-                x_right = self.data.iloc[-1]

-                for _x in self.data_interp:

-                    if _x > x_right:

-                        self.data_interp[_x] = None

-            else:

-                x_left, x_right = self.data.iloc[i-1], self.data.iloc[i]

-                for _x in self.data_interp:

-                    if x_left < _x < x_right:

-                        self.data_interp[_x] = None

-

         else:

             # The keys of data_interp are the unknown points

             self.data_interp[x] = None