Re: [Numpy-discussion] Dealing with roundoff error

2010-03-29 Thread Mike Sarahan
Sun, Mar 28, 2010 at 12:44 PM, Friedrich Romstedt wrote: > 2010/3/28 Mike Sarahan : >> I have run into some roundoff problems trying to line up some >> experimental spectra.  The x coordinates are given in intervals of 0.1 >> units.  I read the data in from a text file using np.l

[Numpy-discussion] Dealing with roundoff error

2010-03-27 Thread Mike Sarahan
Hi all, I have run into some roundoff problems trying to line up some experimental spectra. The x coordinates are given in intervals of 0.1 units. I read the data in from a text file using np.loadtxt(). I think Robert's post here explains why the problem exists: http://mail.scipy.org/pipermail/

Re: [Numpy-discussion] FFT's & IFFT's on images

2008-07-02 Thread Mike Sarahan
Beautiful! Thanks Stefan! It was the PIL bug. Thanks for all the replies. -Mike On Thu, 2008-07-03 at 01:00 +0200, Stéfan van der Walt wrote: > Hi Mike > > 2008/7/3 Mike Sarahan <[EMAIL PROTECTED]>: > > I agree that the components are very small, and in a numeric sense,

Re: [Numpy-discussion] FFT's & IFFT's on images

2008-07-02 Thread Mike Sarahan
0200, Stéfan van der Walt wrote: > Hi Mike > > 2008/7/2 Mike Sarahan <[EMAIL PROTECTED]>: > > I'm trying to do phase reconstruction on images which involves switching > > back and forth between Fourier space and real space. I'm trying to test > > numpy (&

[Numpy-discussion] FFT's & IFFT's on images

2008-07-02 Thread Mike Sarahan
each value (<1). I'm using Image.fromarray to convert arrays to images, and I'm working with 8-bit grayscale images. Any help is much appreciated! Thanks, Mike Sarahan ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion