[Numpy-discussion] 2D Fourier Transform with 1D functions

Hi all I know there exists a function for Fourier transforming 2D : fft2 But I'm trying to understand how this function works. As far as I know, first a column based transform is done and then a row based transform. This is what I've created for a test: *test = np.array([[1+0j,2+0j], [3+0j,

[Numpy-discussion] filtering rows from a numpy.ndarray

I've read in a datafile to an ndarray with this command: data=np.genfromtxt('n.txt', delimiter='\t', dtype=[('paramname','S26'), ('study','S26'), ('class','S10'), ('count','f4'), ('average','f4'), ('sd','f4')) I would like to filter the array to only rows where paramname == 'bmi'. What would

Re: [Numpy-discussion] filtering rows from a numpy.ndarray

Tue, 24 May 2011 11:41:28 +0200, Jan Wuyts wrote: bmidata=np.asarray([x for x in data if x['paramname']=='bmi'], dtype=data.dtype) Use indexing: bmidata = data[data['paramname'] == 'bmi'] ___ NumPy-Discussion mailing list

[Numpy-discussion] [ANN] Guaranteed solution of nonlinear equation(s)

Hi all, I have made my free solver interalg (http://openopt.org/interalg) be capable of solving nonlinear equations and systems of them. Unlike scipy optimize fsolve it doesn't matter which functions are involved - convex, nonconvex, multiextremum etc. Even some discontinuous funcs

Re: [Numpy-discussion] 2D Fourier Transform with 1D functions

Hi Chris On Tue, May 24, 2011 at 9:29 AM, Goo Creations goocreati...@gmail.com wrote: At this point I'm stuck, since I'm not sure how to do the row based transform on ownRes. Is there anyone out there who knows how to do this? NumPy's FFT supports an axis argument, so you can do In [29]: own

Re: [Numpy-discussion] 2D Fourier Transform with 1D functions

Thank you very much Stéfan!! 2011/5/24 Stéfan van der Walt ste...@sun.ac.za Hi Chris On Tue, May 24, 2011 at 9:29 AM, Goo Creations goocreati...@gmail.com wrote: At this point I'm stuck, since I'm not sure how to do the row based transform on ownRes. Is there anyone out there who

[Numpy-discussion] labeled axes

Hi all, I've read some discussions about adding labeled axes, and even ticks, to numpy arrays (such as in Luis' dataarray). I have recently found that the ability to label axes would be very helpful to me, but I'd like to keep the implementation as lightweight as possible. The reason I

[Numpy-discussion] Runtime error in numpy development version

I get the following runtime error when I import numpy: module compiled against ABI version 200 but this version of numpy is 109 (see below). Python 2.7.1 (r271:86832, May 20 2011, 14:41:42) [GCC 4.4.0 20090514 (Red Hat 4.4.0-6)] on linux2 Type help, copyright, credits or license for more

Re: [Numpy-discussion] Runtime error in numpy development version

Try removing numpy and openCV (and associated files) from /usr/local/lib/python2.7/dist-packages or wherever you originally compiled it too. Then rebuild numpy and openCV. Probably openCV was compiled with a different version of numpy at the time of compilation. Just a guess but removing and