Added python wrapper for add_points and remove_point methods.

src/python/pyflann/flann_ctypes.py

@@ -256,6 +256,29 @@ flannlib.flann_load_index_%(C)s.argtypes = [
 flann.load_index[%(numpy)s] = flannlib.flann_load_index_%(C)s
 """)
 
+flann.add_points = {}
+define_functions(r"""
+flannlib.flann_add_points_%(C)s.restype = None
+flannlib.flann_add_points_%(C)s.argtypes = [ 
+        FLANN_INDEX, # index_id
+        ndpointer(%(numpy)s, ndim = 2, flags='aligned, c_contiguous'), # dataset
+        c_int, # rows
+        c_int, # cols
+        c_float, # rebuild_threshhold
+]
+flann.add_points[%(numpy)s] = flannlib.flann_add_points_%(C)s
+""")
+
+flann.remove_point = {}
+define_functions(r"""
+flannlib.flann_remove_point_%(C)s.restype = None
+flannlib.flann_remove_point_%(C)s.argtypes = [ 
+        FLANN_INDEX, # index_id
+        c_uint, # point_id
+]
+flann.remove_point[%(numpy)s] = flannlib.flann_remove_point_%(C)s
+""")
+
 flann.find_nearest_neighbors = {}
 define_functions(r"""
 flannlib.flann_find_nearest_neighbors_%(C)s.restype = c_int

src/python/pyflann/index.py

@@ -211,6 +211,29 @@ class FLANN(object):
             c_char_p(to_bytes(filename)), pts, npts, dim)
         self.__curindex_data = pts
         self.__curindex_type = pts.dtype.type
+        
+    def add_points(self, pts, rebuild_threshold=2.0):
+        """
+        Adds points to pre-built index.
+
+        Params:
+            pts: 2D numpy array of points.\n
+            rebuild_threshold: reallocs index when it grows by factor of \
+                `rebuild_threshold`. A smaller value results is more space \
+                efficient but less computationally efficient. Must be greater \
+                than 1.           
+        """
+        if not pts.dtype.type in allowed_types:
+            raise FLANNException("Cannot handle type: %s"%pts.dtype)
+        pts = ensure_2d_array(pts,default_flags) 
+        npts, dim = pts.shape
+        flann.add_points[self.__curindex_type](self.__curindex, pts, npts, dim, rebuild_threshold)
+        
+    def remove_point(self, idx):
+        """
+        Removes a point from a pre-built index.         
+        """
+        flann.remove_point[self.__curindex_type](self.__curindex, idx)
 
     def nn_index(self, qpts, num_neighbors=1, **kwargs):
         """