FD_spatial_gradient

cuqi.pde.FD_spatial_gradient(sol, grid, times)

Time dependent observation map that computes the finite difference (FD) spatial gradient of a solution given at grid points (grid) and times (times). This map is supported for 1D spatial domains only.

Parameters:

• sol (np.ndarray) – The solution array of shape (number of grid points, number of time steps).

• grid (np.ndarray) – The spatial grid points of shape (number of grid points,).

• times (np.ndarray) – The discretized time steps of shape (number of time steps,).