On 2/23/2012 7:20 PM, Travis Oliphant wrote:
> https://www.surveymonkey.com/s/numpy_list_survey
> After you complete the survey, I would really appreciate any feedback on
> questions that could be improved, removed, or added.
I felt the survey was targeting business users rather than academic u
Quantitative Researcher (Chicago, IL)
Job Description
TradeLink Securities is currently hiring a Quantitative Researcher to join
our team. We are looking for a quantitative researcher to help develop and
test investment and trading strategies. The ideal candidate will have
experience analyzing,
On Feb 24, 2012, at 7:43 AM, Pierre Haessig wrote:
> Hi,
> Le 24/02/2012 01:00, Matthew Brett a écrit :
>> Right - no proposal to change float64 because it's not ambiguous - it
>> is both binary64 IEEE floating point format and 64 bit width.
> All right ! Focusing the renaming only on those "exte
Two short questions:
1. When I distribute pre-compiled f2py extensions for OSX, it seems that
the users need gfortran installed, else it cannot find libgfortran.3.dylib.
Is there a way to link that file with the extension?
2. Should extensions compiled on Snowleopard work on Lion?
Thanks,
Mark
Am 24.2.2012 um 13:54 schrieb Neal Becker:
> Francesc Alted wrote:
>
>> On Feb 23, 2012, at 2:19 PM, Neal Becker wrote:
>>
>>> Pauli Virtanen wrote:
>>>
23.02.2012 20:44, Francesc Alted kirjoitti:
> On Feb 23, 2012, at 1:33 PM, Neal Becker wrote:
>
>> Is mkl only used for lin
Excerpts from Travis Oliphant's message of Thu Feb 23 15:08:52 -0500 2012:
> This is actually on my short-list as well --- it just didn't make it to the
> list.
>
> In fact, we have someone starting work on it this week. It is his
> first project so it will take him a little time to get up to s
Le 24/02/2012 14:49, Bob Dowling a écrit :
> Thank you all (and especially the gentleman who spotted I was rotating
> in the wrong direction).
No I hadn't ! I had just mentioned the transpose issue for writing
"numpy.dot(data,rotation)".
So in the end the two sign flips cancel each other and Nicol
numpy.dot and numpy.tensordot do exactly what I need.
Thank you all (and especially the gentleman who spotted I was rotating
in the wrong direction).
___
NumPy-Discussion mailing list
NumPy-Discussion@scipy.org
http://mail.scipy.org/mailman/listinfo/nu
> From: Travis Oliphant
> After you complete the survey, I would really appreciate any feedback on
> questions that could be improved, removed, or added.
Hi Travis,
I didn't really get whom you mean by "they" in:
5. What do they want you to be using (technologies, languages, libraries)?
Hi,
Great idea !
What's the plan to spread the word about this survey ? Is it about
forwarding the link to friends and colleagues ?
Le 24/02/2012 01:20, Travis Oliphant a écrit :
> After you complete the survey, I would really appreciate any feedback on
> questions that could be improved, remove
I haven't checked correctness, but how about
np.tensordot(rotation, data, axes=1)
Gary R
On 24 February 2012 23:11, Bob Dowling wrote:
> Conceptually, I have a 2-d grid of 2-d vectors. I am representing this
> as an ndarray of shape (2,M,N). I want to apply a 2x2 matrix
> individually to each
Hi,
Le 24/02/2012 13:55, Nicolas Rougier a écrit :
> You should use a (M,N,2) array to store your vectors:
> [...]
> [...]
> numpy.dot(data,rotation)
looking at how numpy.dot generalizes the matrix product* to N-dim
arrays, I came to the same conclusion.
I just suspect that the 'rotation' array sh
You should use a (M,N,2) array to store your vectors:
import math
import numpy
import numpy.random
# Rotation angle
theta = math.pi/6.0
# Grid shape
M = 10
N = 10
# Establish the rotation matrix
c = math.cos(theta)
s = math.sin(theta)
rotation = numpy.array([[c, s],
Francesc Alted wrote:
> On Feb 23, 2012, at 2:19 PM, Neal Becker wrote:
>
>> Pauli Virtanen wrote:
>>
>>> 23.02.2012 20:44, Francesc Alted kirjoitti:
On Feb 23, 2012, at 1:33 PM, Neal Becker wrote:
> Is mkl only used for linear algebra? Will it speed up e.g., elementwise
> tr
Hi,
Le 24/02/2012 01:00, Matthew Brett a écrit :
> Right - no proposal to change float64 because it's not ambiguous - it
> is both binary64 IEEE floating point format and 64 bit width.
All right ! Focusing the renaming only on those "extended precision"
float types makes sense.
> The confusion here
Conceptually, I have a 2-d grid of 2-d vectors. I am representing this
as an ndarray of shape (2,M,N). I want to apply a 2x2 matrix
individually to each vector in the grid.
However, I can't work out the appropriate syntax for getting the matrix
multiplication to broadcast over the grid. All
16 matches
Mail list logo
