add new method...

modules/util/util.py

@@ -1331,4 +1331,8 @@ def downscale_2x(original, smoothing=False, samples_axis_first=False):
 
 
 def resample(x, y, z, x_min, x_max, y_min, y_max):
-    return RectBivariateSpline(x, y, z, [x_min, x_max, y_min, y_max])
+    z_intrp = []
+    for k in range(z.shape[0]):
+        z_k = z[k, :, :]
+        z_intrp.append(RectBivariateSpline(x, y, z_k, [x_min, x_max, y_min, y_max]))
+    return np.stack(z_intrp)