symmetric boundary condition for 1d convolution

Question

Let h_0_2 = np.array([0.0625, 0., 0.25, 0., 0.375, 0., 0.25, 0., 0.0625]). In the 2D scenario I can specify the desired boundary with scipy.signal.convolve2d which is in my case the symmetrical boundary conditions. I haven't found the same option for 1D so I think I have to add the boundary condition 'manually'. To my understanding this can be basically achieved by adding a Hankel-matrix to np.convolve(h_0_2, v, 'same') where v is the array with which we want to convolve. Any idea how this would look like?

Answer 1

There is a convolve1d that lets you specify all sorts of things including boundary conditions in the scipy.ndimage module.