Dear Henry,
You need to call import_array() in initspam. See:
http://docs.scipy.org/doc/numpy-1.5.x/user/c-info.how-to-extend.html
HTH,
Jon
On 29/10/2010 15:11, Henry Gomersall wrote:
I'm trying to get a really simple toy example for a numpy extension
working (you may notice its based on
Ian Mallett wrote:
To the second, actually, I need to increment the number of times the
index is there. For example, if b=[1,5,6,6,6,9], then a[6-1] would have
to be incremented by +3 = +1+1+1. I tried simply a[b-1]+=1, but it
seems to only increment values once, even if there are more
Hello,
It seems that python 2.7 has been released, but the current numpy
download on sourceforge (1.4.1) segfaults for me using mingw on windows.
This seems to be fixed in trunk. Is a new release planned in the near
future?
Thanks
Jon
___
Sebastian Haase wrote:
On Sun, May 16, 2010 at 2:13 PM, Alan G Isaac ais...@american.edu wrote:
On 5/16/2010 12:03 AM, Gabriel Mihalache wrote:
The eigenvalue should be 1 exactly.
http://floating-point-gui.de/
Hi, just wondering why that site you just referred doesn't say who the
author is
Hello everyone,
Is there a 'numpy' efficient way to do the following loop:
for i, v in indices, values:
total[ i ] += v
The behaviour is like numpy.put, but instead of overwriting the array
element, it is incremented. Currently I have a little C extension which
does the job, but I'm
Chad Netzer wrote:
But Charles Harris's earlier suggestion of some hard coded medians for
common filter template sizes (ie 3x3, 5x5, etc.) may be a nice
addition to scipy, especially if it can be generalized somewhat to
other filters.
For 2D images try looking into PIL :
This one works for me with python2.6 for amd64 from python.org:
http://sourceforge.net/projects/numpy/files/NumPy/1.3.0/numpy-1.3.0.win-amd64-py2.6.msi/download
Thanks to David C. I believe
Klaus Noekel wrote:
Dear folks,
just over a month ago there was a thread about plans for numpy, and
play nicely with extension modules who use PyGILState,
like numpy. I can get around it by disabling threads in numpy
altogether, but I'd rather have them working in these days of multi-core
CPUs. Any ideas?
Thanks,
Jon
Jon Wright wrote:
Hi There,
I am trying to use numpy with jepp (from
Charles R Harris wrote:
On Fri, Apr 10, 2009 at 8:33 PM, John Seales praxbaf...@hotmail.com
mailto:praxbaf...@hotmail.com wrote:
The link to FFTW on http://www.scipy.org/Installing_SciPy/Mac_OS_X
is broken.
Is it needed to do Fourier Transforms? My main motivation for using
David Cournapeau wrote:
I now remember that numpy could not be built from sources by
easy_install, but I believe we fixed the problem. Would you mind using
on a recent svn checkout ? I would like this to be fixed if that's
still a problem,
With the current svn (6661) I can build using
Hello,
If I do:
C:\ easy_install numpy
... on a windows box, it attempts to do a source download and build,
which typically doesn't work. If however I use:
C:\ easy_install numpy==1.0.4
... then the magic works just fine. Any chance of a more recent
bdist_egg being made available for
David Cournapeau wrote:
Hi Jon,
Jon Wright wrote:
Hello,
If I do:
C:\ easy_install numpy
... on a windows box, it attempts to do a source download and build,
which typically doesn't work. If however I use:
C:\ easy_install numpy==1.0.4
... then the magic works just fine. Any
Eric Firing wrote:
Francesc Alted wrote:
So, IMHO, I think it would be better to rename the inverse trigonometric
functions from ``arc*`` to ``a*`` prefix.
+1
I have stumbled over this myself. If there is resistance to removing
-1
There is resistance. Please don't remove the old
Travis E. Oliphant wrote:
...
* Thus 1.2 will not break ABI compatibility but will add new API features.
This is really great news (amongst the other good things). Many thanks
for keeping the ABI compatible!
All the best,
Jon
.
___
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/etc users are going to have to make a
co-ordinated upgrade, then this seems to be a grave mistake. Does
David Cournapeau wrote:
Does that mean we will continue breaking the ABI from time to time
during the 1.* cycle ?
Can someone help me to understand me what is the compelling reason for
this change? If it only means everyone recompiles, it is hard to see
what we, as users, are gaining by
Robert Kern wrote:
FWIW, neither PIL nor PyOpenGL have C code which uses numpy arrays, so
they are entirely unaffected.
OK, so here are some projects which might notice a 1.2 installation, in
as much as they turn up on a google code search for:
#include numpy/arrayobject.h -scipy
Jarrod Millman wrote:
Hey,
NumPy 1.2.0b2 is now available. Please test this so that we can
uncover any problems ASAP.
Windows binary:
http://www.enthought.com/~gvaroquaux/numpy-1.2.0b2-win32.zip
Hello Again,
It seems the new release breaks matplotlib, for those pauvres who are
Jarrod Millman wrote:
Hey,
NumPy 1.2.0b2 is now available. Please test this so that we can
uncover any problems ASAP.
Windows binary:
http://www.enthought.com/~gvaroquaux/numpy-1.2.0b2-win32.zip
As well as the ones from Alan, if you add the -O for optimise flag to
your python, there
Hello,
If I use the -O switch then it seems getting some testcase failures,
and finally a windows message that python.exe has encountered a problem
and needs to close. We are sorry for the inconvenience..
Running the testsuite via jepp (jepp.sourceforge.net) gives the same
failures, plus 8
Hello,
Nice idea - please can you make it work with matplotlib's time/date
stuff too?
Thanks,
Jon
Francesc Alted wrote:
...
===
A proposal for implementing some date/time types in NumPy
Charles R Harris wrote:
On Fri, Jul 11, 2008 at 12:37 PM, Francesc Alted
A Friday 11 July 2008, Francesc Alted escrigué:
A Friday 11 July 2008, Jon Wright escrigué:
Nice idea - please can you make it work with matplotlib's time/date
Hmmm, following the matplotlib
David Cournapeau wrote:
On Sun, Jul 6, 2008 at 9:55 PM, wilson [EMAIL PROTECTED] wrote:
hi all,
is it possible to use numpy functions (like eigh()..etc)from java
code? isthere a java wrapper for numpy?
Yes, it is possible, but not yet 100% convenient. Have a look at jepp,
from
Michael Abshoff wrote:
Jonathan Wright wrote:
...etc. We needed this for generating the .so library file name for
ctypes
Can you elaborate on this a little?
The we refered to another project (not numpy) where we needed to
distinguish 32 bit from 64 bit platforms. We have code for picking
Hi everyone,
Despite being a bit lost in the matrix debate, today I was working on
something which might want to use what is being described. You can see
an array only version at:
http://fable.svn.sourceforge.net/viewvc/fable/ImageD11/trunk/test/demo/latred.py?revision=2741view=markup
The
Alan G Isaac wrote:
Will matrix behavior change in 1.1, as discussed from time
to time? Perhaps it just takes a very small change in __getitem__:
URL:http://www.mail-archive.com/numpy-discussion@scipy.org/msg07363.html
Quoting from:
On 15/04/2008, Alan G Isaac [EMAIL PROTECTED] wrote:
...
The proposal on the table is to remove an unneeded (and
unwanted) deviation of the matrix API from the ndarray API.
...
How about writing up the changes needed PEP style on the wiki?
The fix appears to be a very small change in
I tried to build numpy from svn using python-3.0a4 from python.org and
noticed there are some issues (print, except syntax, distutils magic).
Has anyone been through this already? I actually want to start going
through my own code, but I need numpy before I get started...
Thanks,
Jon
Christopher Barker wrote:
By the way, I know Greg Ewing was asked about better support for numpy
arrays in Pyrex, and he said I'm *definitely* not going to
re-implement C++ templates! -- is there talk of creating a way to write
extensions that could operate on numpy arrays of arbitrary type
David Cournapeau wrote:
Hi,
My head hurt trying to understand dll management with windows. I
wanted to find a sane way to use dll for numscons, but I can't see how
to do this, so I was wondering if anyone on this ML had any deep
knowledge on how to install dll, and reuse them with
Lou Pecora wrote:
... This appears to be the way
static and shared libraries work, especially on Mac OS
X, maybe elsewhere.
Have you tried linking against a GSL static library? I don't have a mac,
but most linkers only pull in the routines you need. For example, using
windows and mingw:
I'm sorry, I still think we're talking past each other. What do you mean by
native data type? If you just want to get an ndarray without specifying a
type, use PyArray_FROM_O(). That's what it's for. You don't need to know the
data type beforehand.
What I have wanted in the past (and what
Hello,
Does anyone have any experience with numpy and using a GPU? eg:
http://developer.nvidia.com/object/cuda.html
...they seem to have a GPU based blas available.
Thanks for any info,
Jon
___
Numpy-discussion mailing list
Charles R Harris [EMAIL PROTECTED] wrote:
Straight radix sort might be an interesting option for some things.
However, its performance can depend on whether the input data is random or
not and it takes up more space than merge sort. Other potential drawbacks
arise from the bit twiddling
Dear numpy experts,
I see from the docs that there seem to be 3 sorting algorithms for array
data (quicksort, mergesort and heapsort). After hearing a rumour about
radix sorts and floats I google'd and now I'm wondering about a radix
sort for numpy (and Numeric) scalars? See:
Date: Sun, 25 Feb 2007 15:43:03 +0100 (CET)
From: Sturla Molden [EMAIL PROTECTED]
Subject: Re: [Numpy-discussion] How to tell numpy to use gfortran as a
compiler ?
Content-Type: text/plain;charset=iso-8859-1
[...]
There is a third Fortran compiler based on the GCC backend called g95.
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