Re: [Numpy-discussion] chirp-z

On Sat, May 26, 2007 at 10:37:41PM -0600, Charles R Harris wrote: > I have been looking around for chirp-z code with a useable license. There is > the original fortran version by Rader et. al. out there, as well as a package > from FreeBSD at > http://ftp2.at.freebsd.org/pub/FreeBSD/distfiles/fxt-2

Re: [Numpy-discussion] chirp-z

> I'm a moderator on a French programming forum, and in the algorithm > area, there are people that even don't know the FFT algorithm that > want to make complicated thing with it, it is bound to fail. I suppose > that indicating this "limitation" in the docstring is enough, so that > people make

Re: [Numpy-discussion] chirp-z

Matthieu Brucher wrote: > > There really aren't any transparent fast fft convolutions in > SciPy. The closest thing is in signaltools, fftconvolve, and if > you ask it to convolve, say, sequences whose length add up to > 7902, then it will do a size 7901 transform. > > > BTW, is thi

Re: [Numpy-discussion] chirp-z

Charles R Harris wrote: > > > On 5/27/07, *Matthieu Brucher* <[EMAIL PROTECTED] > > wrote: > > Hi, > > Isn't the chirp transform only two cross-correlations ? And for a > fast one, there is a module in SciPy, and I think that kind of > operation belongs mo

Re: [Numpy-discussion] chirp-z

There really aren't any transparent fast fft convolutions in SciPy. The closest thing is in signaltools, fftconvolve, and if you ask it to convolve, say, sequences whose length add up to 7902, then it will do a size 7901 transform. BTW, is this really a glitch ? I think there is two schools th

Re: [Numpy-discussion] chirp-z

Umm, no, There really aren't any transparent fast fft convolutions in SciPy. The closest thing is in signaltools, fftconvolve, and if you ask it to convolve, say, sequences whose length add up to 7902, then it will do a size 7901 transform. Because 7901 is prime this takes about 300 times as lon

Re: [Numpy-discussion] Numpy 1.0.3 install problem. Help!

On Sun, May 27, 2007 at 12:29:30PM -0600, Travis Oliphant wrote: > Yang, Lu wrote: > > Thanks, Travis. I don't have problem building other applications on the > > same platform. > > Are there any files in the extracted /numpy-1.0.3 that I can modify the > > path of the C > > compiler? I have chec

[Numpy-discussion] APL2007: Arrays and Objects

I'd like to see some NumPy/SciPy participation in this. I'm thinking of submitting a "Python as a Tool of Thought" paper, playing off of Ken Iverson's Turing Award Lecture "Notation as a Tool of Thought". A NumPy/SciPy tutorial would be valuable as well. # Steve ==

Re: [Numpy-discussion] chirp-z

On 5/27/07, Matthieu Brucher <[EMAIL PROTECTED]> wrote: Hi, Isn't the chirp transform only two cross-correlations ? And for a fast one, there is a module in SciPy, and I think that kind of operation belongs more to Scipy than Numpy ;) Umm, no, There really aren't any transparent fast fft co

Re: [Numpy-discussion] Vista installer?

Charles R Harris wrote: > > > On 5/24/07, *Ryan Krauss* <[EMAIL PROTECTED] > > wrote: > > I am trying to use Numpy/Scipy for a class I am teaching this summer. > I have one student running Vista. Is there an installer that works > for Vista? Running the exe

Re: [Numpy-discussion] Numpy 1.0.3 install problem. Help!

Yang, Lu wrote: > Thanks, Travis. I don't have problem building other applications on the same > platform. > Are there any files in the extracted /numpy-1.0.3 that I can modify the path > of the C > compiler? I have checked all the files in it withouth luck. > The C-compiler that is used is t

Re: [Numpy-discussion] complex arrays and ctypes

Hello On Sun, 27 May 2007, Sven Schreiber wrote: > Hi, > I am wondering whether it's possible to pass (and get back) arrays of > complex floats via ctypes. > > To be concrete, I have managed to access lapack's dgges (Fortran) > function using ctypes (thanks to a related example on this list), an

[Numpy-discussion] complex arrays and ctypes

Hi, I am wondering whether it's possible to pass (and get back) arrays of complex floats via ctypes. To be concrete, I have managed to access lapack's dgges (Fortran) function using ctypes (thanks to a related example on this list), and now I would like to do the same with the complex version zgge

Re: [Numpy-discussion] Median / mean functionality confusing?

Matthew Brett schrieb: > Can I resurrect this thread then by agreeing with Chris, and my > original post, that it would be better if median had the same behavior > as mean, accepting axis and dtype as inputs? Well I'm not a developer but I guess there is a backwards-compatibility issue here. I mea

Re: [Numpy-discussion] Numpy 1.0.3 install problem. Help!

Thanks, Travis. I don't have problem building other applications on the same platform. Are there any files in the extracted /numpy-1.0.3 that I can modify the path of the C compiler? I have checked all the files in it withouth luck. Thanks a lot. Quoting Travis Oliphant <[EMAIL PROTECTED]>: >

Re: [Numpy-discussion] chirp-z

Sorry, not cross-correlation, convolution, too early in the morning here... 2007/5/27, Matthieu Brucher <[EMAIL PROTECTED]>: Hi, Isn't the chirp transform only two cross-correlations ? And for a fast one, there is a module in SciPy, and I think that kind of operation belongs more to Scipy than

Re: [Numpy-discussion] chirp-z

Hi, Isn't the chirp transform only two cross-correlations ? And for a fast one, there is a module in SciPy, and I think that kind of operation belongs more to Scipy than Numpy ;) Matthieu 2007/5/27, Charles R Harris <[EMAIL PROTECTED]>: All, I have been looking around for chirp-z code with a