Here is another implementation of the Chirp-Z transform in Python,
that handles complex numbers.
Regards
Stéfan
On Thu, Mar 15, 2007 at 11:53:49AM +0200, Nadav Horesh wrote:
> A long time ago I translated a free code of chirp z transform (zoom fft) into
> python.
> Attached here the source and tw
Sebastian Haase wrote:
> Hi!
> I use the wxPython PyShell.
> I like especially the feature that when typing a module and then the
> dot "." I get a popup list of all available functions (names) inside
> that module.
>
> Secondly, I think it really makes code clearer when one can see where
> a fun
Hi James
On Thu, Mar 15, 2007 at 06:01:55PM -0400, James Turner wrote:
> >Code snippets to illustrate the problem would be welcome.
>
> OK. I have had a go at producing a code snippet. I apologize that
> this is based on numarray rather than numpy, since I'm using STScI
> Python, but I think it s
Hello all
- Original Message -
From: "David Cournapeau" <[EMAIL PROTECTED]>
To: "Discussion of Numerical Python"
Sent: Friday, March 16, 2007 6:51 AM
Subject: Re: [Numpy-discussion] numpy.distutils, windows dll vs lib
> Robert Kern wrote:
>> David Cournapeau wrote:
>> Generally, you
David Cournapeau wrote:
> I don't use the library for linking: I only need to be able to load it
> dynamically through ctypes. What I did is simply overriding the
> calc_info method, in which I try to detect both library and header
> files. For the library, I do the following:
>
> # Look for t
On 3/15/07, Ray S <[EMAIL PROTECTED]> wrote:
"Charles R Harris" wrote:
>BTW, did the s/n you gave refer to the signal or to it's transform?
That is the time domain s/n, approximately...
Ah, good. The s/n for lines spectra in the transform will go up as the sqrt
of the number of sample poi
Hi!
I use the wxPython PyShell.
I like especially the feature that when typing a module and then the
dot "." I get a popup list of all available functions (names) inside
that module.
Secondly, I think it really makes code clearer when one can see where
a function comes from.
I have a default
imp
Robert Kern wrote:
> David Cournapeau wrote:
>> Hi,
>>
>> recently, I got some problems detecting a dynamic library (dll) with
>> numpy.distutils. Basically, I have a package which uses a class derived
>> from system_info from numpy.distutils to detect a dll I use through ctypes.
>> If on
David Cournapeau wrote:
> Hi,
>
> recently, I got some problems detecting a dynamic library (dll) with
> numpy.distutils. Basically, I have a package which uses a class derived
> from system_info from numpy.distutils to detect a dll I use through ctypes.
> If only the dll is present, my
Hi,
recently, I got some problems detecting a dynamic library (dll) with
numpy.distutils. Basically, I have a package which uses a class derived
from system_info from numpy.distutils to detect a dll I use through ctypes.
If only the dll is present, my numpy.distutils.system_info derived
"Charles R Harris" wrote:
>BTW, did the s/n you gave refer to the signal or to it's transform?
That is the time domain s/n, approximately...
Thanks to all for the replies, some digestion is needed.
Ray
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James Turner wrote:
> Sorry I accidentally broke this thread in 2 (see thread of March 9).
>
> I tried manually adding the right reference in the mail header to
> continue the same thread, but obviously got it wrong (I think because
> I replied to the digest email instead of starting a new one). N
Sorry I accidentally broke this thread in 2 (see thread of March 9).
I tried manually adding the right reference in the mail header to
continue the same thread, but obviously got it wrong (I think because
I replied to the digest email instead of starting a new one). Not
sure whether there is a bet
Hi Stefan,
Thanks for the suggestions!
> Is this related to
>
> http://projects.scipy.org/scipy/scipy/ticket/213
>
> in any way?
As far as I can see, the problems look different, but thanks for
the example of how to document this. I did confirm that your example
exhibits the same behaviour und
On Thu, Mar 15, 2007 at 11:23:36AM +0100, Francesc Altet wrote:
> El dj 15 de 03 del 2007 a les 06:01 -0400, en/na Brian Blais va
> escriure:
> > Hello,
> >
> > Can someone tell me what the preferred way to specify the type of an array?
> > I want
> > it to be a float array, no matter what is gi
On 3/15/07, Warren Focke <[EMAIL PROTECTED]> wrote:
On Wed, 14 Mar 2007, Charles R Harris wrote:
> On 3/14/07, Ray Schumacher <[EMAIL PROTECTED]> wrote:
> >
> > What I had been doing is a 2048 N full real_FFT with a Hann window,
and
> > further analyzing the side lobe/bin energy (via linear i
On 3/15/07, Ray S <[EMAIL PROTECTED]> wrote:
Hi Nadev,
>A long time ago I translated a free code of chirp z transform (zoom
fft)
>into python.
Thanks, I'll try it out.
I did, however read before on the differences:
From Numerix http://www.numerix-dsp.com/zoomfft.html:
"One common question is :
On Wed, 14 Mar 2007, Charles R Harris wrote:
> On 3/14/07, Ray Schumacher <[EMAIL PROTECTED]> wrote:
> >
> > What I had been doing is a 2048 N full real_FFT with a Hann window, and
> > further analyzing the side lobe/bin energy (via linear interp) to try to
> > more precisely determine the f wit
Hi Nadev,
>A long time ago I translated a free code of chirp z transform (zoom
fft)
>into python.
Thanks, I'll try it out.
I did, however read before on the differences:
From Numerix http://www.numerix-dsp.com/zoomfft.html:
"One common question is : Is the zoom FFT the same as the chirp
z-tr
Roberto De Almeida wrote:
> Hi, Steve.
>
> On 3/14/07, Steve Lianoglou <[EMAIL PROTECTED]> wrote:
>> I'm not sure what the problem is exactly, but is it weird that
>> there's something to do w/ 'i686' when you're running on a powerbook
>> being that the pbook is PowerPC?
>
> I managed to compile
Hi, Steve.
On 3/14/07, Steve Lianoglou <[EMAIL PROTECTED]> wrote:
> I'm not sure what the problem is exactly, but is it weird that
> there's something to do w/ 'i686' when you're running on a powerbook
> being that the pbook is PowerPC?
I managed to compile numpy by first compiling Python 2.5 as
Miguel Oliveira, Jr. wrote:
> Hi Eike!
>
> Yes, I did subscribe! Thanks once again for your reply... I'm sorry
> but I don't know exactly what you mean... Do you think I should replace
> t = arange(0, durSecs, 1.0/SRate)
> by
> t = linspace(0, durSecs, durSecs*SRate)?
>
> That won't work...
*H
Miguel Oliveira, Jr. wrote:
> Hi Robert,
>
> I'm expecting that the code generates a sine wave sound file in aiff
> format... Apparently the code worked before when arrayrange() was
> used...
Then the problem lies somewhere else; a number of other things changed between
Numeric and numpy. arr
I just had a need to append a column of 1's to an array, and given how
big numpy is on broadcasting I thought this might work:
column_stack((m1,m2, 1))
But it doesn't.
Is there any reason why that couldn't or shouldn't be made to work?
--bb
___
Nump
On 3/15/07, David Koch <[EMAIL PROTECTED]> wrote:
... NumPy equiv for Matlab B(A_idx, A_Idx)
Ok, I did like this:
A_Idx = array([1, 0])
B = random.randn(3,3)
rowInd = kron(ones((1, len(A_Idx)), int), A_Idx[:, newaxis])
colInd = kron(ones((len(A_Idx), 1), int), A_Idx)
B[rowInd, colInd] - re
On 3/14/07, Gael Varoquaux <[EMAIL PROTECTED]> wrote:
I definitely second this comment. Using arrays when you are trying to
append a lot of data is using the wrong data format. And the code is so
much more readable with lists.
Thank you,
I will consider it,
Next thing, I have
A_Idx = arr
El dj 15 de 03 del 2007 a les 06:01 -0400, en/na Brian Blais va
escriure:
> Hello,
>
> Can someone tell me what the preferred way to specify the type of an array?
> I want
> it to be a float array, no matter what is given (say, integers). I can do:
>
> a=numpy.array([1,2,3],numpy.dtype('float'
Hello all
I was poking around in the NumPy internals and I came across the
following code in PyArray_RemoveSmallest in arrayobject.c:
intp sumstrides[NPY_MAXDIMS];
...
for (i=0; ind; i++) {
sumstrides[i] = 0;
for (j=0; jnumiter; j++) {
sumstrides[i] = multi->iters[j]->strides[i
Hello,
Can someone tell me what the preferred way to specify the type of an array? I
want
it to be a float array, no matter what is given (say, integers). I can do:
a=numpy.array([1,2,3],numpy.dtype('float'))
or
a=numpy.array([1,2,3],type(1.0))
or perhaps many others. Is there a way that i
A long time ago I translated a free code of chirp z transform (zoom fft)
into python.
Attached here the source and two translations (probably one of the is
right)
Nadav.
On Wed, 2007-03-14 at 14:02 -0800, Ray S wrote:
> We'd like to do what most call a "zoom FFT"; we only are interested
> in
Hi Robert,
I'm expecting that the code generates a sine wave sound file in aiff
format... Apparently the code worked before when arrayrange() was
used...
Thanks!
M.
On 14 Mar 2007, at 17:31, Robert Kern wrote:
> Miguel Oliveira, Jr. wrote:
>> Hello,
>>
>> I've got a few codes that use "arr
Hi Eike!
Yes, I did subscribe! Thanks once again for your reply... I'm sorry
but I don't know exactly what you mean... Do you think I should replace
t = arange(0, durSecs, 1.0/SRate)
by
t = linspace(0, durSecs, durSecs*SRate)?
That won't work...
Maybe I am missing something?... The resulting f
Bill Baxter wrote:
> On 3/15/07, Bill Baxter <[EMAIL PROTECTED]> wrote:
>
>> Thanks, Sebastian. I'll take a look at Pyro. Hadn't heard of it.
>> I'm using just xmlrpclib with pickle right now.
>>
>
> I took a look at Pyro -- it looks nice.
> The only thing I couldn't find, though, is how
Bill, very cool. Also, thanks for showing me how Twisted can be used
like Pyro, more-or-less, I think. (If I understand your code from my 1
minute perusal.)
On Mac OS X, there's one issue I don't have time to follow any further:
sys.executable points to
/Library/Frameworks/Python.framework/Ve
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