diff --git a/interp/grid/DD.py b/interp/grid/DD.py
deleted file mode 100644
index a107cc4..0000000
--- a/interp/grid/DD.py
+++ /dev/null
@@ -1,55 +0,0 @@
-from itertools import product
-
-import numpy as np
-
-from interp.grid.delaunay import dgrid as basegrid
-
-class rect_grid(basegrid):
-  def __init__(self, xres = 5, yres = 5):
-    xmin =  0.0
-    xmax =  1.0
-    xspan = xmax - xmin
-    xdel = xspan / float(xres - 1)
-
-    ymin =  0.0
-    ymay =  1.0
-    yspan = ymay - ymin
-    ydel = yspan / float(yres - 1)
-
-
-    verts = []
-    q     = np.zeros( xres * yres )
-    for x in xrange(xres):
-      cur_x = xmin + (x * xdel)
-      for y in xrange(yres):
-        cur_y = ymin + (y * ydel)
-        verts.append([cur_x, cur_y])
-
-    basegrid.__init__(self, verts, q)
-
-
-class random_grid(rect_grid):
-  def __init__(self, num_verts = 10):
-
-    appx_side_res = int(np.sqrt(num_verts))
-    delta = 1.0 / float(appx_side_res)
-
-    # load up corners:
-    verts = [i for i in product((0,1), repeat = 2)]
-
-    for x in xrange(1,appx_side_res):
-      cur_x = x * delta
-      for cur_y in (0, 1):
-        new_point = [cur_x, cur_y]
-        verts.append(new_point)
-
-    for y in xrange(1,appx_side_res):
-      cur_y = y * delta
-      for cur_x in (0, 1):
-        new_point = [cur_x, cur_y]
-        verts.append(new_point)
-
-    verts.extend(np.random.random((num_verts - 4*appx_side_res, 2)))
-
-    q = np.zeros(len(verts))
-    basegrid.__init__(self, np.array(verts), q)
diff --git a/interp/grid/DDD.py b/interp/grid/DDD.py
deleted file mode 100644
index 394cd6c..0000000
--- a/interp/grid/DDD.py
+++ /dev/null
@@ -1,73 +0,0 @@
-from itertools import product
-
-import numpy as np
-
-from interp.grid.delaunay import dgrid as basegrid
-
-class rect_grid(basegrid):
-  def __init__(self, xres = 5, yres = 5, zres = 5):
-    xmin  = 0.0
-    xmax  = 1.0
-    xspan = xmax - xmin
-    xdel  = xspan / float(xres - 1)
-
-    ymin  = 0.0
-    ymay  = 1.0
-    yspan = ymay - ymin
-    ydel  = yspan / float(yres - 1)
-
-    zmin  = 0.0
-    zmaz  = 1.0
-    zspan = zmaz - zmin
-    zdel  = zspan / float(zres - 1)
-
-    verts = []
-    q     = np.zeros(xres * yres * zres)
-    for x in xrange(xres):
-      cur_x = xmin + (x * xdel)
-      for y in xrange(yres):
-        cur_y = ymin + (y * ydel)
-        for z in xrange(zres):
-          cur_z = zmin + (z * zdel)
-          verts.append([cur_x, cur_y, cur_z])
-
-    basegrid.__init__(self, verts, q)
-
-
-
-class random_grid(rect_grid):
-  def __init__(self, num_verts = 100):
-    verts = []
-
-    appx_side_res = int(np.power(num_verts, 1/3.0))
-    delta = 1.0 / float(appx_side_res)
-
-    # populate all corners
-    verts = [i for i in product((0,1), repeat = 3)]
-
-
-    # populate the edges (bottom and top squares)
-    for z in (0,1):
-      for x in xrange(1, appx_side_res):
-        cur_x = x * delta
-        for cur_y in (0, 1):
-          new_point = [cur_x, cur_y, z]
-          verts.append(new_point)
-
-      for y in xrange(1, appx_side_res):
-        cur_y = y * delta
-        for cur_x in (0, 1):
-          new_point = [cur_x, cur_y, z]
-          verts.append(new_point)
-
-    # populate side edges
-    for x in (0,1):
-      for y in (0,1):
-        for z in xrange(1, appx_side_res):
-          cur_z = z * delta
-          verts.append((x,y,cur_z))
-
-    verts.extend(np.random.random((num_verts - 12 * appx_side_res, 3)))
-
-    q = np.zeros(len(verts))
-    basegrid.__init__(self, np.array(verts), q)