Re: [Numpy-discussion] Building on WinXP 64-bit, Intel Compilers

2009-01-28 Thread David Cournapeau
Michael Colonno wrote: Thanks for your response. I manually edited one of the python files (ccompiler.py I think) to change icc.exe to icl.exe. (This is a trick I used to use to get F2PY to compile on Windows platforms.) Since icl is a drop-in replacement for the visual studio compiler /

Re: [Numpy-discussion] Building on WinXP 64-bit, Intel Compilers

2009-01-28 Thread Michael Colonno
I think this is doable; thankfully the Intel compilers on Windows and Linux are very similar in behavior. The exact same build scripts *should*work fine provided the file extensions (.o -- .obj) and flags (-L, etc.) are modified. In terms of syntax this should be an easy thing to do (it was

[Numpy-discussion] optimise operation in array with datetime objects

2009-01-28 Thread Timmie
Hello, I have an array of datetime objects. What is the most efficient way of creating a new array with only the hours or minutes out of it? Here is an example: ### imports import numpy as np import datetime as dt ### create some data d = dt.datetime.now() dates_li = [] count = 0 for i in

Re: [Numpy-discussion] optimise operation in array with datetime objects

2009-01-28 Thread Pierre GM
On Jan 28, 2009, at 3:56 PM, Timmie wrote: ### this is the loop I would like to optimize: ### looping over arrays is considered inefficient. ### what could be a better way? hours_array = dates_array.copy() for i in range(0, dates_array.size): hours_array[i] = dates_array[i].hour You

Re: [Numpy-discussion] optimise operation in array with datetime objects

2009-01-28 Thread Pierre GM
On Jan 28, 2009, at 5:43 PM, Timmie wrote: You could try: np.fromiter((_.hour for _ in dates_li), dtype=np.int) or np.array([_.hour for _ in dates_li], dtype=np.int) I used dates_li only for the preparation of example data. So let's suppose I have the array dates_array returned from a a

Re: [Numpy-discussion] Building on WinXP 64-bit, Intel Compilers

2009-01-28 Thread David Cournapeau
On Thu, Jan 29, 2009 at 1:18 AM, Michael Colonno mcolo...@gmail.com wrote: I think this is doable; thankfully the Intel compilers on Windows and Linux are very similar in behavior. The problem is that distutils does not abstract this kind of things: you have a CCompiler class, and a subclass

[Numpy-discussion] A buildbot farm with shell access - for free ?

2009-01-28 Thread David Cournapeau
Hi, Just saw that on one ML: http://www.snakebite.org/ http://mail.python.org/pipermail/python-committers/2009-January/000331.html Bottom line: it looks like there is a set of machines which were donated to the PSF for buildbot *with shell access* so that people can fix problems appearing

Re: [Numpy-discussion] A buildbot farm with shell access - for free ?

2009-01-28 Thread Charles R Harris
On Wed, Jan 28, 2009 at 7:11 PM, David Cournapeau da...@ar.media.kyoto-u.ac.jp wrote: Hi, Just saw that on one ML: http://www.snakebite.org/ http://mail.python.org/pipermail/python-committers/2009-January/000331.html Bottom line: it looks like there is a set of machines which were

Re: [Numpy-discussion] A buildbot farm with shell access - for free ?

2009-01-28 Thread Damian Eads
Sounds like a great idea! On 1/28/09, David Cournapeau da...@ar.media.kyoto-u.ac.jp wrote: Hi, Just saw that on one ML: http://www.snakebite.org/ http://mail.python.org/pipermail/python-committers/2009-January/000331.html Bottom line: it looks like there is a set of machines which

Re: [Numpy-discussion] A buildbot farm with shell access - for free ?

2009-01-28 Thread Jarrod Millman
On Wed, Jan 28, 2009 at 6:11 PM, David Cournapeau da...@ar.media.kyoto-u.ac.jp wrote: It is said in the email that this is reserved to the python project, and prominent python projects like Twisted and Django. Would it be ok to try to be qualified as a prominent python project as well ? That

[Numpy-discussion] convolution axis

2009-01-28 Thread Gideon Simpson
Is there an easy way to perform convolutions along a particular axis of an array? -gideon ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion

[Numpy-discussion] help on fast slicing on a grid

2009-01-28 Thread frank wang
Hi, I have to buidl a grid with 256 point by the command: a = arange(-15,16,2) L = len(a) cnstl = a.reshape(L,1)+1j*a My problem is that I have a big data array that contains the data round the points in cnstl. I want to slice the point to the closest cnstl point and also compute the error.

Re: [Numpy-discussion] help on fast slicing on a grid

2009-01-28 Thread Robert Kern
On Wed, Jan 28, 2009 at 23:52, frank wang f...@hotmail.com wrote: Hi, I have to buidl a grid with 256 point by the command: a = arange(-15,16,2) L = len(a) cnstl = a.reshape(L,1)+1j*a My problem is that I have a big data array that contains the data round the points in cnstl. I want to

Re: [Numpy-discussion] help on fast slicing on a grid

2009-01-28 Thread frank wang
Here is the for loop that I am think about. Also, I do not know whether the where commands can handle the complicated logic. The where command basically find the data in the square around the point cnstl[j]. Let the data array is qam with size N Out = X error = X for i in arange(N): for

Re: [Numpy-discussion] help on fast slicing on a grid

2009-01-28 Thread Robert Kern
On Thu, Jan 29, 2009 at 00:09, frank wang f...@hotmail.com wrote: Here is the for loop that I am think about. Also, I do not know whether the where commands can handle the complicated logic. The where command basically find the data in the square around the point cnstl[j]. cnstl is a 2D array

Re: [Numpy-discussion] convolution axis

2009-01-28 Thread Nadav Horesh
There are at least two options: 1. use convolve1d from numpy.numarray.nd_image (or scipy.ndimage) 2. use scipy.signal.convolve and adjust the dimensions of the convolution kenel to align it along the desired axis. Nadav -הודעה מקורית- מאת: numpy-discussion-boun...@scipy.org בשם

Re: [Numpy-discussion] help on fast slicing on a grid

2009-01-28 Thread frank wang
Hi, Bob, Thanks for your help. I am sorry for my type error. qam array is the X array in my example. cntl is a complex array contains the point (x,y) axises. I will try to make a workable example. Also I will try to find out the zeros_like function. However, I guess that zeros_like(X)

Re: [Numpy-discussion] make latex in numpy/doc failed

2009-01-28 Thread Scott Sinclair
2009/1/27 Nils Wagner nwag...@iam.uni-stuttgart.de: a make latex in numpy/doc failed with ... Intersphinx hit: PyObject http://docs.python.org/dev/c-api/structures.html writing... Sphinx error: too many nesting section levels for LaTeX, at heading: numpy.ma.MaskedArray.__lt__ make: ***