Re: [Numpy-discussion] NumPy 1.8.0rc2 release

ulian Taylor. Best, Andrew On Fri, Oct 25, 2013 at 7:52 PM, Nathaniel Smith wrote: > It's py3 only, see the discussion in #3977. > On 25 Oct 2013 17:45, "Charles R Harris" > wrote: > >> >> >> >> On Fri, Oct 25, 2013 at 7:07 AM, Andrew S

Re: [Numpy-discussion] NumPy 1.8.0rc2 release

Hi, I found an unexpected difference from numpy 1.7.1 and 1.8.0rc2 with Python 3.3.2 on Ubuntu 12.04 (amd64). Here is the test program: import numpy as np print(np.__version__) K = np.array([[ 0., 0., 0., 0.], [-0., 0., 0.

Re: [Numpy-discussion] Compiling for free on Windows32

Fadhley Salim wrote: > Thomasm, > > What want is the current latest Numpy as a win32 .egg file for Python > 2.4.4. I'm not bothered how I get there. We've been able to compile > * Dont care how I make it as long as it works! Are you aware that the reason numpy is not distributed as an .egg is so

Re: [Numpy-discussion] DVCS at PyCon

Eric Firing wrote: > Sure enough, that is what I was looking for. (gitweb doesn't seem to > have the annotate [or blame, in git-speak] option, or the graph.) > gitweb does, you have to turn it on, though... You need to add this to your gitweb.conf, though: $feature{'blame'}{'default'} = [1];

Re: [Numpy-discussion] DVCS at PyCon

Matthieu Brucher wrote: >> One thing about git-svn is that this is not really needed if you just >> use git and I installed git from source on many linuxes and clusters >> and it just works, as it is just pure C. I usually just use git-svn on >> my laptop/workstation, where I install the Debian/Ubu

Re: [Numpy-discussion] N-D array interface page is out of date

Gael Varoquaux wrote: > On Sun, Mar 08, 2009 at 10:18:11PM -0700, Andrew Straw wrote: >> OK, I now have a password (thanks Gaël), but I don't have edit >> permissions on that page. So I'm attaching a patch against that page >> source that incorporates the stuff that

Re: [Numpy-discussion] N-D array interface page is out of date

Andrew Straw wrote: > Pauli Virtanen wrote: >> Hi, >> >> Fri, 06 Mar 2009 09:16:33 -0800, Andrew Straw wrote: >>> I have updated http://numpy.scipy.org/array_interface.shtml to have a >>> giant warning first paragraph describing how that information is >

[Numpy-discussion] numpy.scipy.org

Hi all, I have been doing some editing of http://numpy.scipy.org . In general, however, lots of this page is redundant and outdated compared to lots of other documentation that has now sprung up. Shall we kill this page off, redirect it to another page, or continue updating it? (For this latter op

Re: [Numpy-discussion] N-D array interface page is out of date

Pauli Virtanen wrote: > Hi, > > Fri, 06 Mar 2009 09:16:33 -0800, Andrew Straw wrote: >> I have updated http://numpy.scipy.org/array_interface.shtml to have a >> giant warning first paragraph describing how that information is >> outdated. Additionally, I have updated

[Numpy-discussion] numpy documentation editor - retrieve password?

Hi, I created a login for the numpy documentation editor but cannot remember my password. Would it be possible to have it sent to me or a new one generated? It would be great to have a button on the website so that I could do this myself, but if that's too much pain, my username is AndrewStraw. T

Re: [Numpy-discussion] N-D array interface page is out of date

nsure everything is actually correct. Thanks, Andrew Stéfan van der Walt wrote: > 2009/2/3 Andrew Straw : > >> Can someone with appropriate permissions fix the page or give me the >> appropriate permissions so I can do it? I think even deleting the page >> is

Re: [Numpy-discussion] Cython numerical syntax revisited

Dag Sverre Seljebotn wrote: > This is NOT yet discussed on the Cython list; I wanted to check with > more numerical users to see if the issue should even be brought up there. > > The idea behind the current syntax was to keep things as close as > possible to Python/NumPy, and only provide some "

Re: [Numpy-discussion] is there a faster way to get a buffer interface than ndarray.tostring()?

Given what you're doing, may I also suggest having a look at http://code.astraw.com/projects/motmot/wxglvideo.html -Andrew Chris Colbert wrote: > As an update for any future googlers: > > the problem was with revpixels = pixeldata[::-1,:,;:-1] which apparently > returns an array that is discont

Re: [Numpy-discussion] small suggestion for numpy.testing utils

Darren, What's the difference between asanyarray(y) and array(y, copy=False, subok=True)? I thought asanyarray would also do what you want. -Andrew Darren Dale wrote: > On Sun, Feb 22, 2009 at 3:22 PM, Darren Dale > wrote: > > On Sun, Feb 22, 2009 at 3:17 PM, Dar

Re: [Numpy-discussion] parallel compilation of numpy

David Cournapeau wrote: > On Thu, Feb 19, 2009 at 3:24 PM, Andrew Straw wrote: > >> It's an interesting idea to build Python package distributions without >> distutils. For pure Python installables, if all you seek better is >> distutils, the bar seems fairly low

Re: [Numpy-discussion] parallel compilation of numpy

David Cournapeau wrote: >> * Integration with setuptools and eggs, which enables things like >> namespace packages. >> > > This is not. eggs are not specified, and totally implementation defined. > I tried some time ago to add an egg builder to scons, but I gave up. > And I don't think you can

Re: [Numpy-discussion] [SciPy-user] Numpy 1.2.1 and Scipy 0.7.0; Ubuntu packages

OK, I think you're concerned about compatibility of Python extensions using fortran. We don't use any (that I know of), so I'm going to stop worrying about this and upload .debs from your .dsc (or very close) to my repository... ...except for one last question: If Hardy uses the g77 ABI but I'm bu

Re: [Numpy-discussion] [SciPy-user] Numpy 1.2.1 and Scipy 0.7.0; Ubuntu packages

David Cournapeau wrote: > Andrew Straw wrote: > >> Fernando Perez wrote: >> >> >>> On Wed, Feb 11, 2009 at 6:17 PM, David Cournapeau >>> wrote: >>> >>> >>> >>>> Unfortunately, it does require

Re: [Numpy-discussion] [SciPy-user] Numpy 1.2.1 and Scipy 0.7.0; Ubuntu packages

Fernando Perez wrote: > On Wed, Feb 11, 2009 at 6:17 PM, David Cournapeau wrote: > >> Unfortunately, it does require some work, because hardy uses g77 >> instead of gfortran, so the source package has to be different (once >> hardy is done, all the one below would be easy, though). I am not sure

Re: [Numpy-discussion] N-D array interface page is out of date

or give me the appropriate permissions so I can do it? I think even deleting the page is better than keeping it as-is. -Andrew Andrew Straw wrote: > Hi, I just noticed that the N-D array interface page is outdated and > doesn't mention the buffer interface that is standard with Pytho

[Numpy-discussion] N-D array interface page is out of date

Hi, I just noticed that the N-D array interface page is outdated and doesn't mention the buffer interface that is standard with Python 2.6 and Python 3.0: http://numpy.scipy.org/array_interface.shtml This page is linked to from http://numpy.scipy.org/ I suggest, at the minimum, modifying the pag

Re: [Numpy-discussion] Singular Matrix problem with Matplitlib in Numpy (Windows - AMD64)

John Hunter wrote: > Andrew, since you are the original author of the isnan port, could you > patch the branch and the trunk to take care of this? Done in r6791 and r6792. Sorry for the trouble. Now I just hope we don't get a problem with "long long", although now if _ISOC99_SOURCE is defined, w

Re: [Numpy-discussion] Efficient removal of duplicates

Hanno Klemm wrote: > Hi, > > I the following problem: I have a relatively long array of points > [(x0,y0), (x1,y1), ...]. Apparently, I have some duplicate entries, which > prevents the Delaunay triangulation algorithm from completing its task. > > Question, is there an efficent way, of getting r

Re: [Numpy-discussion] Python equivalent to Matlab control systems/ LTI/state space model manipulation tools

Ryan Krauss has been working on something, although I have not had a chance to try it. http://www.siue.edu/~rkrauss/python_intro.html Scott Askey wrote: > Where is a good place to look for python funtions similar to Matlab's > ss , tf, ss2tf as use for transforming a linear time invariant(LTI) mo

[Numpy-discussion] test results of 1.2.0rc1

Hi, with numpy 1.2.0rc1 running 'python -c "import numpy; numpy.test()"' on my Ubuntu Hardy amd64 machine results in 1721 tests being run and 1 skipped. So far, so good. However, if I run numpy.test(10,10,all=True), I get 1846 tests with: the message "FAILED (SKIP=1, errors=8, failures=68)" Furthe

Re: [Numpy-discussion] Advice on converting iterator into array efficiently

Alan Jackson wrote: > Looking for advice on a good way to handle this problem. > > I'm dealing with large tables (Gigabyte large). I would like to > efficiently subset values from one column based on the values in > another column, and get arrays out of the operation. For example, > say I have 2 c

Re: [Numpy-discussion] rc1 update

Jarrod Millman wrote: > On Thu, Aug 28, 2008 at 7:48 AM, Travis E. Oliphant > <[EMAIL PROTECTED]> wrote: > >> +1 on what Andrew said. >> > > I don't really care that much, but I do think API is better than > FEATURE. I would think that there may be times when we change the API > but not th

Re: [Numpy-discussion] C-API change for 1.2

Andrew Straw wrote: > Robert Kern wrote: >> On Sat, Aug 16, 2008 at 04:34, Jon Wright <[EMAIL PROTECTED]> wrote: >> >>> Travis, Stéfan, >>> >>> I missed Travis mail previously. Are you *really* sure you want force >>> all C code which use

Re: [Numpy-discussion] C-API change for 1.2

Robert Kern wrote: > On Sat, Aug 16, 2008 at 04:34, Jon Wright <[EMAIL PROTECTED]> wrote: > >> Travis, Stéfan, >> >> I missed Travis mail previously. Are you *really* sure you want force >> all C code which uses numpy arrays to be recompiled? If you mean that >> all your matplotlib/PIL/pyopengl/

Re: [Numpy-discussion] [REVIEW] Update NumPy API format to support updates that don't break binary compatibility

Looking at the code, but not testing it -- this looks fine to me. (I wrote the original NPY_VERSION stuff and sent it to Travis, who modified and included it.) I have added a couple of extremely minor points to the code review tool -- as much as a chance to play with the tool as to comment on t

Re: [Numpy-discussion] Instructions on building from source

Eric Firing wrote: > Andrew Straw wrote: > > >> Just for reference, you can find the build dependencies of any Debian >> source package by looking at its .dsc file. For numpy, that can be found >> at http://packages.debian.org/sid/python-numpy >> >> Cur

Re: [Numpy-discussion] Instructions on building from source

Robert Kern wrote: > On Wed, Jul 23, 2008 at 16:56, Fernando Perez <[EMAIL PROTECTED]> wrote: >> Howdy, >> >> I was just trying to explain to a new user how to build numpy from >> source on ubuntu and I realized that there's not much info on this >> front in the source tree. Scipy has a nice INSTA

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

Mike Sarahan wrote: > I agree that the components are very small, and in a numeric sense, I > wouldn't worry at all about them, but the image result is simply noise, > albeit periodic-looking noise. Fernando Perez and John Hunter have written a nice FFT image denoising example: http://matplotlib.s

Re: [Numpy-discussion] Updating cython directory to pxd usage: objections?

Fernando Perez wrote: > I verified further by putting the import_array() back into the .pyx > file and indeed: > > - i_a() in .pxd -> missing from .c file. > - i_a() in .pyx -> OK in .c file. > > It thus seems that we must keep the import_array call out of the .pxd > and users still need to remem

Re: [Numpy-discussion] nose changes checked in

Stéfan van der Walt wrote: > 2008/6/18 Alan McIntyre <[EMAIL PROTECTED]>: > >> Is "next release" referring to 1.2 or the release after that? If it's >> the release after 1.2, then I assume that 1.2 must still be able to >> run all its tests without nose. >> > > Alternatively, we could dist

Re: [Numpy-discussion] Buildbot dying horrible, slow death.

Charles R Harris wrote: > Dear Friends, > > Our wonderful buildbot is in declining health. The Mac can't update > from svn, Andrew's machines are offline, the Sparcs have lost their > spark, and bsd_64 is suffering from tolist() syndrome: AFAIK, I don't have any machines on the buildbot... Is there

Re: [Numpy-discussion] Switching to nose test framework (was: NumpyTest problem)

Alan McIntyre wrote: > On Mon, Jun 9, 2008 at 3:41 AM, Stéfan van der Walt <[EMAIL PROTECTED]> wrote: > >> I suggest we also remove ParametricTestCase now. >> > > I don't mind converting the existing uses (looks like it's only used 5 > times) to something else, it was causing trouble for me

Re: [Numpy-discussion] ANN: NumPy 1.1.0

Thanks, Jarrod. Should I replace the old numpy 1.0.4 information at http://www.scipy.org/Download with the 1.1.0? It's still listing 1.0.4, but I wonder if there's some compatibility with scipy 0.6 issue that should cause it to stay at 1.0.4. In either case, I think the page should be updated

Re: [Numpy-discussion] 1.1.0rc1 tagged

Jarrod Millman wrote: > Please test the release candidate: > svn co http://svn.scipy.org/svn/numpy/tags/1.1.0rc1 1.1.0rc1 > Thanks, Jarrod. I have packaged SVN trunk from r5189 and made a Debian source package (based on a slightly old version the Debian Python Modules Team's numpy package with

Re: [Numpy-discussion] searchsorted() and memory cache

t was. -Andrew Charles R Harris wrote: > > > On Wed, May 14, 2008 at 2:00 PM, Andrew Straw <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Charles R Harris wrote: > > > > > > On Wed, May 14, 2008 at 8:09 AM,

Re: [Numpy-discussion] searchsorted() and memory cache

Charles R Harris wrote: > > > On Wed, May 14, 2008 at 8:09 AM, Andrew Straw <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > > > Quite a difference (a factor of about 3000)! At this point, I haven't > delved into the

Re: [Numpy-discussion] searchsorted() and memory cache

Andrew Straw wrote: > I have uploaded it as a pytables file to http://astraw.com/framenumbers.h5 Ahh, forgot to mention a potentially important point -- this data file is 191 MB. ___ Numpy-discussion mailing list Numpy-discussion@scipy.org h

Re: [Numpy-discussion] searchsorted() and memory cache

> I will post any new insights as I continue to work on this... > OK, I save isolated a sample of my data that illustrates the terrible performance with the binarysearch. I have uploaded it as a pytables file to http://astraw.com/framenumbers.h5 in case anyone wants to have a look themselves. H

Re: [Numpy-discussion] searchsorted() and memory cache

Nathan Bell wrote: > On Tue, May 13, 2008 at 6:59 PM, Andrew Straw <[EMAIL PROTECTED]> wrote: > >> easier and still blazingly fast compared to the binary search >> implemented in searchsorted() given today's cached memory architectures. >> > >

Re: [Numpy-discussion] searchsorted() and memory cache

Charles R Harris wrote: > > > On Tue, May 13, 2008 at 5:59 PM, Andrew Straw <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Thanks for all the comments on my original question. I was more > offline > than intended after I sent

Re: [Numpy-discussion] searchsorted() and memory cache

archsorted() given today's cached memory architectures. -Andrew Andrew Straw wrote: > I've got a big element array (25 million int64s) that searchsorted() > takes a long time to grind through. After a bit of digging in the > literature and the numpy source code, I believe th

[Numpy-discussion] searchsorted() and memory cache

I've got a big element array (25 million int64s) that searchsorted() takes a long time to grind through. After a bit of digging in the literature and the numpy source code, I believe that searchsorted() is implementing a classic binary search, which is pretty bad in terms of cache misses. There are

Re: [Numpy-discussion] python memory use

Robin wrote: > Hi, > > I am starting to push the limits of the available memory and I'd like > to understand a bit better how Python handles memory... > This is why I switched to 64 bit linux and never looked back. > If I try to allocate something too big for the available memory I > often get a

Re: [Numpy-discussion] Fast histogram

Hi Zach, I have a similar loop which I wrote using scipy.weave. This was my first foray into weave, and I had to dig through the intermediate C sources to find the macros that did the indexing in the way I make use of here, but this snipped may get you started. There are 2 functions, which each do

Re: [Numpy-discussion] F2PY future

Pearu Peterson wrote: > Use Google Code. Pros: it provides necessary infrastructure to develop > software projects and I am used to it. Cons: in my experience Google > Code has been too many times broken (at least three times in half a > year), though this may improve in future. Also, Google Cod

Re: [Numpy-discussion] numpyx.pyx (recent svn) works?

This is off-topic and should be directed to the pyrex/cython list, but since we're on the subject: I suppose the following is true, but let me ask, since I have not used Cython. Please correct me if I'm wrong. I have a bunch of pyrex compiled .pyx code. If I start adding some Cython compiled code

Re: [Numpy-discussion] Compile Numpy in VC++8

Matthieu Brucher wrote: > > > 2008/4/3, Chris Barker <[EMAIL PROTECTED] > >: > > Robert Kern wrote: > > Just since that has been discussed a LOT, for years, I want to be > clear: > > > > Different versions of Microsoft's compiler use different > librari

Re: [Numpy-discussion] image to array doubt

[EMAIL PROTECTED] wrote: >> Robin wrote >> I'm not sure why they would be doing this - to me it looks they might >> be using Image as a convenient way to store some other kind of data... > > thanks Robin, > I am wondering if there is a more straightforward way to do these.. > especially the vector

Re: [Numpy-discussion] load movie frames in python?

at Jan 29:8:24 PM, Andrew Straw wrote: > >> I'd suggest pyglet's avbin library. >> > > > great suggestion! I never would have thought to do that. Do you > happen to know how to convert a > > player.texture into a numpy.array? > > there is ImageData,

Re: [Numpy-discussion] load movie frames in python?

I'd sugget pyglet's avbin library. Hans Meine wrote: > On Dienstag 29 Januar 2008, Brian Blais wrote: > >> Is there a way to read frames of a movie in python? Ideally, >> something as simple as: >> >> for frame in movie('mymovie.mov'): >> pass >> >> >> where frame is either a 2-D list, or

Re: [Numpy-discussion] Median again

Considering that many of the statistical functions (mean, std, median) must iterate over all the data and that people (or at least myself) typically call them sequentially on the same data, it may make sense to make a super-function with less repetition. Instead of: x_mean = np.mean(x) x_median =

Re: [Numpy-discussion] parallel numpy (by Brian Granger) - any info?

dmitrey wrote: > The only one thing I'm very interested in for now - why the most > simplest matrix operations are not implemented to be parallel in numpy > yet (for several-CPU computers, like my AMD Athlon X2). For what it's worth, sometimes I *want* my numpy operations to happen only on one c

Re: [Numpy-discussion] Is __array_interface__ supposed to work on numpy scalars?

Travis E. Oliphant wrote: > Andrew Straw wrote: >> Hi, >> >> I'm forwarding a bug from PyOpenGL. The developer, Mike Fletcher, is >> having troubles accessing a numpy scalar with the __array_interface__. >> Is this supposed to work? Or should __array_interfa

[Numpy-discussion] Is __array_interface__ supposed to work on numpy scalars?

Hi, I'm forwarding a bug from PyOpenGL. The developer, Mike Fletcher, is having troubles accessing a numpy scalar with the __array_interface__. Is this supposed to work? Or should __array_interface__ trigger an AttributeError on a numpy scalar? Note that I haven't done any digging on this myself..

Re: [Numpy-discussion] unexpected behavior with allclose( scalar, empty array)

Thanks, I updated the page. Charles R Harris wrote: > > > On Jan 4, 2008 12:27 PM, Andrew Straw <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > I have added a page to the wiki describing this issue: > > http://scipy.org/numpy_warts_and_g

Re: [Numpy-discussion] unexpected behavior with allclose( scalar, empty array)

asting rules cause a to become a zero-dimensional array like b. The default truth value of a zero-dimensional array is True, so the following holds and illustrates how the above result is consistent with numpy's rules. Andrew Straw wrote: > Apologies if I've missed the discussion of thi

Re: [Numpy-discussion] unexpected behavior with allclose( scalar, empty array)

Matthew Brett wrote: >>> So, currently we have all and allclose giving the same answer: >>> >>> In [19]: a = array([]) >>> >>> In [20]: b = array([1]) >>> >>> In [21]: all(a == b) >>> Out[21]: True >>> >>> In [22]: allclose(a, b) >>> Out[22]: True >>> >>> Would we want the answers to be different?

[Numpy-discussion] unexpected behavior with allclose( scalar, empty array)

Apologies if I've missed the discussion of this, but I was recently surprised by the following behavior (in svn trunk 4673). The following code runs without triggering the assertion. import numpy as np print np.__version__ a=np.int32(42) b=np.array([],dtype=np.int32) assert np.allclose(a,b) Is th

Re: [Numpy-discussion] where construct

"or" is logical or. You want "|" which is bitwise/elementwise or. Also, watch the order of operations -- | has higher precedence than <. Thus, you want where( (a<1) | (b<3), b,c) Ross Harder wrote: > What's the correct way to do something like this? > > a=array( (0,1,1,0) ) > b=array( (4,3,2,1)

Re: [Numpy-discussion] Changing the distributed binary for numpy 1.0.4 for windows ?

According to the QEMU website, QEMU does not (yet) emulate SSE on x86 target, so a Windows installation on a QEMU virtual machine may be a good way to build binaries free of these issues. http://fabrice.bellard.free.fr/qemu/qemu-tech.html -Andrew Travis E. Oliphant wrote: > Fernando Perez wrote:

Re: [Numpy-discussion] Changing the distributed binary for numpy 1.0.4 for windows ?

An idea that occurred to me after reading Fernando's email. A function could be called at numpy import time that specifically checks for the instruction set on the CPU running and makes sure that is completely covers the instruction set available through all the various calls, including to BLAS. If

Re: [Numpy-discussion] Loading a > GB file into array

Hi all, I haven't done any serious testing in the past couple years, but for this particular task -- drawing frames using OpenGL without ever skipping a video update -- it is my impression that as of a few Ubuntu releases ago (Edgy?) Windows still beat linux. Just now, I have investigated on 2

Re: [Numpy-discussion] OT: A Way to Approximate and Compress a 3DSurface

Christopher Barker wrote: >> For data interpolation: 2D-Delaunay triangulation based method (I think you >> can find one in the scipy cookbook). > > yup -- but then you need the decimation to remove the "unneeded" > points. I don't think Scipy has that. The sandbox does, thanks to Robert Kern.

Re: [Numpy-discussion] C-API Documentation?

Thomas Schreiner wrote: > Am I doing anything wrong in this program? It's crashing immediately > after the "before" line, using Borland C++ Builder 6 and > numpy-1.0.3.1.win32-py2.4. You have to call import_array() before using the C API. ___ Numpy-disc

Re: [Numpy-discussion] numpy arrays, data allocation and SIMD alignement

Dear David, Both ideas, particularly the 2nd, would be excellent additions to numpy. I often use the Intel IPP (Integrated Performance Primitives) Library together with numpy, but I have to do all my memory allocation with the IPP to ensure fastest operation. I then create numpy views of the da

Re: [Numpy-discussion] Pickle, pytables, and sqlite - loading and saving recarray's

Gael Varoquaux wrote: > On Thu, Jul 19, 2007 at 09:42:42PM -0500, Vincent Nijs wrote: >>I'd luv to hear from people using sqlite, pytables, and cPickle about >>their experiences. > > I was about to point you to this discussion: > http://projects.scipy.org/pipermail/scipy-user/2007-April/01

Re: [Numpy-discussion] Unhandled floating point exception running test in numpy-1.0.3 and svn 3875

john, there was a bug that made it into debian sarge whereby a SIGFPE wasn't trapped in the appropriate place and ended up causing problems similar to what you describe. the difficulty in debugging is that you're after whatever triggers the FPE in the first place (or the bug that lets it go untrap

Re: [Numpy-discussion] annoying numpy string to float conversion behaviour

Torgil Svensson wrote: > This seems to indicate that float('nan') works on some platforms but > str(nan) isn't. Is this true on Linux? Could anyone confirm this? What > about float('inf') and repr(inf) on Linux? On Ubuntu Feisty (amd64) Linux (but this behavior has been the same for at least the

Re: [Numpy-discussion] annoying numpy string to float conversion behaviour

Torgil Svensson wrote: > OS-specific routines (probably the c-library, haven't looked). I > think python should be consistent regarding this across platforms but > I don't know if different c-libraries generates different strings for > special numbers. Anyone? Windows and Linux certainly genera

Re: [Numpy-discussion] average of array containing NaN

Giorgio F. Gilestro wrote: > I find myself in a situation where an array may contain not-Numbers > that I set as NaN. > Yet, whatever operation I do on that array( average, sum...) will > threat the NaN as infinite values rather then ignoring them as I'd > like it'd do. > > Am I missing something?

[Numpy-discussion] VMWare Virtual Appliance of Ubuntu with numpy, scipy, matplotlib, and ipython available

This is a note to announce the availability of a VMWare Virtual Appliance with Ubuntu linux with numpy, scipy, matplotlib, and ipython installed. This should make it relatively easy to try out the software. The VMWare Player and VMWare Server are available for no cost from http://www.vmware.co

Re: [Numpy-discussion] Vista installer?

Andrew Straw wrote: > OK, I have placed an Ubuntu 7.04 image with stock numpy, scipy, matplotlib, and ipython at http://mosca.caltech.edu/outgoing/Ubuntu%207.04%20for%20scientific%20computing%20in%20Python.zip > > The md5sum is 4191e13abda1154c94e685ffdc0f829b. > > Note: I

Re: [Numpy-discussion] Vista installer?

other than the one which I created the virtual appliance on. I'm posting now because it will take me a while to download the file (it's 1 GB) in order to test. -Andrew Andrew Straw wrote: > Hi Ryan, > > I use VMware server on my linux box to host several more linux images. I

Re: [Numpy-discussion] Vista installer?

Hi Ryan, I use VMware server on my linux box to host several more linux images. I will see if I can whip you up a Ubuntu Feisty i386 image with the "big 4" - numpy/scipy/matplotlib/ipython. If I understand their docs correctly, I have "virtual appliances" for previously existing images already

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 array sharing between processes?

Charles R Harris wrote: > > I'll pitch in a few donuts (and my eternal gratitude) for an > example of > shared memory use using numpy arrays that is cross platform, or at > least > works in linux, mac, and windows. > > > I wonder if you could mmap a file and use it as common mem

Re: [Numpy-discussion] numpy array sharing between processes?

Ray Schumacher wrote: > > After Googling for examples on this, in the Cookbook > http://www.scipy.org/Cookbook/Multithreading > MPI and POSH (dead?), I don't think I know the answer... > We have a data collection app running on dual core processors; I start > one thread collecting/writing new data

Re: [Numpy-discussion] bug in http://www.scipy.org/NumPy_for_Matlab_Users

No, the nth index of a Python sequence is a[n], where n starts from zero. Thus, if I want the nth dimension of array a, I want a.shape[n]. I reverted the page to its original form and added a couple explanatory comments about zero vs one based indexing. dmitrey wrote: > now there is > MATLAB

[Numpy-discussion] Python issue of Computing in Science and Engineering available

The May/June issue of Computing in Science and Engineering http://computer.org/cise: is out and has a Python theme. Many folks we know and love from the community and mailing lists contribute to the issue. Read articles by Paul Dubois and Travis Oliphant for free online.

Re: [Numpy-discussion] building numpy with atlas on ubuntu edgy

rex wrote: > Keith Goodman <[EMAIL PROTECTED]> [2007-04-18 10:49]: > >> I'd like to compile atlas so that I can take full advantage of my core >> 2 duo. >> > > If your use is entirely non-commercial you can use Intel's MKL with > built-in optimized BLAS and LAPACK and avoid the need for AT

Re: [Numpy-discussion] building numpy with atlas on ubuntu edgy

Christian K wrote: > David Cournapeau wrote: > >> On Ubuntu and debian, you do NOT need any site.cfg to compile numpy with >> atlas support. Just install the package atlas3-base-dev, and you are >> done. The reason is that when *compiling* a software which needs atlas, >> the linker will try

Re: [Numpy-discussion] Big list of Numpy & Scipy users

Bill Baxter wrote: > On 4/4/07, Robert Kern <[EMAIL PROTECTED]> wrote: > >> Bill Baxter wrote: >> >>> Is there any place on the Wiki that lists all the known software that >>> uses Numpy in some way? >>> >>> It would be nice to start collecting such a list if there isn't one >>>

Re: [Numpy-discussion] Nonblocking Plots with Matplotlib

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

Re: [Numpy-discussion] [Matplotlib-users] Nonblocking Plots with Matplotlib

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

Re: [Numpy-discussion] [SciPy-user] NumPy in Teaching

Perry Greenfield wrote: > On Feb 28, 2007, at 7:32 PM, Joe Harrington wrote: > > >> Hi Steve, >> >> I have taught Astronomical Data Analysis twice at Cornell using IDL, >> and I will be teaching it next Fall at UCF using NumPy. Though I've >> been active here in the recent past, I'm actually no

Re: [Numpy-discussion] Fortran order arrays to and from numpy arrays

Alexander Schmolck wrote: > 2. Despite this overhead, copying around large arrays (e.g. >=1e5 elements) in >above way causes notable additional overhead. Whilst I don't think there's >a sane way to avoid copying by sharing data between numpy and matlab the >copying could likely be done

Re: [Numpy-discussion] Greek Letters

Robert Kern wrote: > On Windows, you may be out of luck. I don't know of any > fully-Unicode-capable terminal. The lack of a decent console application is one of the most problematic issues I face whenever attempting to do serious programming in Windows. I wish I knew of a better terminal program

Re: [Numpy-discussion] Profiling numpy ? (parts written in C)

I added a ticket for Francesc's enhancement: http://projects.scipy.org/scipy/numpy/ticket/403 ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion