[Numpy-discussion] simple rectangular grid

josef.pktd@gmai... josef.pktd@gmai...
Thu Apr 15 13:48:05 CDT 2010


On Thu, Apr 15, 2010 at 2:42 PM, Neal Becker <ndbecker2@gmail.com> wrote:
> Is there a simple way to create a rectangular grid, like this loopy code:
> (This is for a QAM256 constellation, btw):
>
> import numpy as np
>
> u = np.arange (-7.5, 8)
>
> const = np.empty ((16,16), dtype=complex)
>
> for ix in range (16):
>    for iy in range (16):
>        const[ix, iy] = u[ix] + 1j*u[iy]

>>> const2 = u[:,None] + 1j*u
>>> (const == const2).all()
True

Josef
>
>
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