Sorry,
I have chosen the wrong title for this email. It should be a follow up
to the discussion 'Horizontal lines in diffraction image (NumPy FFT)'
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Hello,
> When you convolve two signals, of lengths N and M, you need to pad the
> FFTs to length (N+M-1) before multiplication.
> You can take a look at my linear position-invariant filtering code at:
> http://mentat.za.net/hg/filter
I understand your comments that I need zero padding when doi
Thanks Robert,
that is exactely what I was looking for.
Matthias
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On Tue, Jul 15, 2008 at 21:59, Matthias Hillenbrand
<[EMAIL PROTECTED]> wrote:
> Hello,
>
> I want to calculate the root of a numpy array with negative numbers.
> Here is an example:
>
> x = linspace(-10,10,100)
> h = zeros(100)
>
> h[where(abs(x) < 2)] = sqrt( abs(x) -2 )
> h[where(2 <= abs(x))]
Hello,
I want to calculate the root of a numpy array with negative numbers.
Here is an example:
x = linspace(-10,10,100)
h = zeros(100)
h[where(abs(x) < 2)] = sqrt( abs(x) -2 )
h[where(2 <= abs(x))] = 1j * sqrt( 2 - abs(x) )
Unfortunately I get the following error: Warning: invalid value
