On Tue, 1 Apr 2008, harryos apparently wrote:
> i need to calculate
> wk=uk o (L-Psi)
> where
> uk=a vector of size (1 X N^2)
> o =scalar product
> l,Psi=vectors of (N^2 X 1)
> i have an ndarray U of shape(M X N^2)where uk is one of the rows , and
> L of shape (M X N^2) where l.transpose() is o
i am slightly confused by this maths
i need to calculate
wk=uk o (L-Psi)
where
uk=a vector of size (1 X N^2)
o =scalar product
l,Psi=vectors of (N^2 X 1)
i have an ndarray U of shape(M X N^2)where uk is one of the rows , and
L of shape (M X N^2) where l.transpose() is one of the rows,
If i were t
On Tue, Apr 1, 2008 at 11:56 AM, Andreas Klöckner
<[EMAIL PROTECTED]> wrote:
> Hi all,
>
> is there a particular reason why dot() and tensordot() don't have output
> arguments?
No technical reason. It just hasn't been done. If you were to
implement it, we would be happy to accept it.
--
Robert
Charles Doutriaux wrote:
> Hi Travis,
> Ok we're almost there, in my test suite i get:
> maresult = numpy.core.ma.take(ta, indices, axis=axis)
> AttributeError: 'module' object has no attribute 'ma'
> data = numpy.core.ma.take(ax[:], indices)
> AttributeError: 'module' object has no attribu
On Tue, Apr 1, 2008 at 4:21 PM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> This directory is just the Python source distribution (post configure and
> make). I don't have root permissions to our cluster and the default python
> distribution is an older one. Hence, I have my custom Python distribution
This directory is just the Python source distribution (post configure and
make). I don't have root permissions to our cluster and the default python
distribution is an older one. Hence, I have my custom Python distribution in
this /Python-2.5.2/ directory. The binary is /Python-2.5.2/python .
On T
On Tue, Apr 1, 2008 at 4:03 PM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> Robert,
>
> I followed the recommended steps. Now I have "numpy" and
> "numpy-1.0.4-py2.5.egg-info" in
> Python-2.5.2/lib/python2.5/site-packages. However, I am not able to import
> numpy at the python prompt. Do I have to set
Robert,
I followed the recommended steps. Now I have "numpy" and "
numpy-1.0.4-py2.5.egg-info" in
Python-2.5.2/lib/python2.5/site-packages. However, I am not able to import
numpy at the python prompt. Do I have to set pythonpath or something ?
Thanks
Rgds,
Amit
On Tue, Apr 1, 2008 at 2:44 PM, R
> That would be very neat. I can see how you can get around dynamical
> typing in a very nice way using this. As the pypy projects says, giving a
> dynamically-typed language to people does not necessarily means they type
> dynamically-typed code.
>
> I must say I like the idea a lot, you are real
> (Getting around this is impossible, though we might add a different
> syntax for type declaration (using decorators) so that the same code can
> also be run using the Python interpreter.)
>
I meant to say: Getting around this is impossible for functions that are
exported from a module and
On Tue, Apr 01, 2008 at 10:48:30PM +0200, Dag Sverre Seljebotn wrote:
> though we might add a different syntax for type declaration (using
> decorators) so that the same code can also be run using the Python
> interpreter.)
That would be very neat. I can see how you can get around dynamical
typing
> I can foresee certain situations under which we can predict the type
> of the result of operations like this one. Would it be possible to
> then handle 'y' as an ndarray as well, instead of reverting to Python
> object calls?
>
Indeed - plans are underway to add automatic type inference to C
Hi Dag
On Tue, Apr 1, 2008 at 11:06 AM, Dag Sverre Seljebotn
<[EMAIL PROTECTED]> wrote:
> One more comment about the constructor described on the page above.
> It would be good if we could have the same syntax as the current
> numpy.ndarray, and then simply call through to the underlying C
> const
On Tue, Apr 1, 2008 at 1:31 PM, Amit Itagi <[EMAIL PROTECTED]> wrote:
>
> On Tue, Apr 1, 2008 at 1:21 PM, Robert Kern <[EMAIL PROTECTED]> wrote:
> >
> > On Tue, Apr 1, 2008 at 10:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> > > I am installing this on a CENTOS linux platform (64 bit AMD opteron).
On Tue, Apr 1, 2008 at 12:43 PM, David Cournapeau <[EMAIL PROTECTED]>
wrote:
> On Tue, Apr 1, 2008 at 8:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> >
> > I figured how to specify a particular installation of the libraries. I
> want
> > to do the opposite. How do I specify the following in site.
On Tue, Apr 1, 2008 at 12:43 PM, David Cournapeau <[EMAIL PROTECTED]>
wrote:
> On Tue, Apr 1, 2008 at 8:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> >
> > I figured how to specify a particular installation of the libraries. I
> want
> > to do the opposite. How do I specify the following in site.
On Tue, Apr 1, 2008 at 1:21 PM, Robert Kern <[EMAIL PROTECTED]> wrote:
> On Tue, Apr 1, 2008 at 10:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> > I am installing this on a CENTOS linux platform (64 bit AMD opteron).
> The
> > path to my python directory is /home/amit/packages/Python-2.5.2 . If I
Hi Travis,
Ok we're almost there, in my test suite i get:
maresult = numpy.core.ma.take(ta, indices, axis=axis)
AttributeError: 'module' object has no attribute 'ma'
data = numpy.core.ma.take(ax[:], indices)
AttributeError: 'module' object has no attribute 'ma'
I don't know if it was autom
On Tue, Apr 1, 2008 at 10:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> I am installing this on a CENTOS linux platform (64 bit AMD opteron). The
> path to my python directory is /home/amit/packages/Python-2.5.2 . If I
> temporarily make the atlas library unavailable (by renaming the directory to
On Tue, Apr 1, 2008 at 10:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
>
> On Mon, Mar 31, 2008 at 11:06 PM, Robert Kern <[EMAIL PROTECTED]> wrote:
> >
> > On Mon, Mar 31, 2008 at 4:17 PM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> > > Hi,
> > >
> > > I am having problems with numpy installation.
> >
Charles Doutriaux wrote:
> Hi Travis,
>
> I get this:
>
> import numpy, numpy.oldnumeric.ma as MA, numpy.oldnumeric as
> Numeric, PropertiedClasses
> File
> "/lgm/cdat/latest/lib/python2.5/site-packages/numpy/oldnumeric/ma.py",
> line 2204, in
> array.mean = _m(average)
> NameError: n
Hi all,
is there a particular reason why dot() and tensordot() don't have output
arguments?
Andreas
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On Tue, Apr 1, 2008 at 8:16 AM, Amit Itagi <[EMAIL PROTECTED]> wrote:
>
> I figured how to specify a particular installation of the libraries. I want
> to do the opposite. How do I specify the following in site.cfg - "Don't
> search for the library. Assume that it is absent and use the default slow
Hi Travis,
I get this:
import numpy, numpy.oldnumeric.ma as MA, numpy.oldnumeric as
Numeric, PropertiedClasses
File
"/lgm/cdat/latest/lib/python2.5/site-packages/numpy/oldnumeric/ma.py",
line 2204, in
array.mean = _m(average)
NameError: name 'average' is not defined
C.
Travis E. O
Charles Doutriaux wrote:
> Hi Pierre,
>
> I"m ccing Bob on this, he's the main developper for cdms2 package.
I've uploaded the original ma.py file back into oldnumeric so that
oldnumeric.ma should continue to work as before. Can you verify this?
Thanks,
-Travis O.
All,
Because numpy.ma.MaskedArray objects are now derived from classical ndarrays,
the subclassing rules should be followed. As we observed yesterday with
Charles, the adaptation is not as straightforward as we hoped.
If you have time constraints, the easiest would indeed be to revert to the
pr
> Yes : evectors[:3] selects the first three lines, evectors[:,3] selects the
> fourth column.
>
arggg!!
my mistake!
sorry Lorenzo
thanks Matthieu
gordon
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>
> but the notation evectors[:3] will give me an ndarray of shape(3,6)
> Am i missing something here?
>
Yes : evectors[:3] selects the first three lines, evectors[:,3] selects the
fourth column.
Matthieu
--
French PhD student
Website : http://matthieu-brucher.developpez.com/
Blogs : http://matt
> The normalized eigenvector corresponding to the eigenvalue w[i]
> is the column v[:,i].
> so, yes, the eigvec coresponding to the eigval w[i] is v[:,i].
Lorenzo
sorry i don't understand
from the above sample(unordered)
if i select the the 4th eigenvalue i get 1.7
evals[3]=1.7
i believe th
On Mon, Mar 31, 2008 at 11:06 PM, Robert Kern <[EMAIL PROTECTED]> wrote:
> On Mon, Mar 31, 2008 at 4:17 PM, Amit Itagi <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > I am having problems with numpy installation.
> >
> > 1) These is an atlas 3.8.0 library installed somewhere in the search
> path.
> > H
hi
i came across some code for eigenface construction from some
images ,using the old Numeric .
http://www.owlnet.rice.edu/~elec301/Projects99/faces/code.html
In the eigenlib.py
http://www.owlnet.rice.edu/~elec301/Projects99/faces/code/eigenlib.py
i converted the calls to Numeric functions to thei
Hi Pierre,
I"m ccing Bob on this, he's the main developper for cdms2 package. At
this point I think Travis original suggestion was the best. We should
leave it like it was for 1.0.5 There's a lot of changes to do in order
to get the backward compatibility going. And I feel it should wait until
Fixed now...many apologies for the outage.
Travis
On Apr 1, 2008, at 8:19 AM, Gael Varoquaux wrote:
> On Tue, Apr 01, 2008 at 02:29:13PM +0200, Matthieu Brucher wrote:
>> The planet is no longer accessible. Anyone has the same issue ?
>
> Yes, the scipy.org server is down. I think we need to w
On Tue, Apr 01, 2008 at 02:29:13PM +0200, Matthieu Brucher wrote:
>The planet is no longer accessible. Anyone has the same issue ?
Yes, the scipy.org server is down. I think we need to wait for the US to
wake up to take care of this.
Ga�l
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Hi,
I cannot access the numpy, scipy, or astropy repositories at scipy.org.
The servers appear to be down.
[redcedar:~/dev/scipy] chanley% svn update
svn: PROPFIND request failed on '/svn/scipy/trunk'
svn: PROPFIND of '/svn/scipy/trunk': could not connect to server
(http://svn.scipy.org)
T
Hi,
The planet is no longer accessible. Anyone has the same issue ?
Matthieu
2008/1/1, Jarrod Millman <[EMAIL PROTECTED]>:
>
> Hey,
>
> I just wanted to announce that we now have a NumPy/SciPy blog
> aggregator thanks to Gaël Varoquaux: http://planet.scipy.org/
>
> Feel free to contact me if yo
Dag Sverre Seljebotn wrote:
http://wiki.cython.org/enhancements/numpy
One more comment about the constructor described on the page above.
I read this a different way now, if what you meant is the parameters to
ndarray in
cdef c_numpy.ndarray(c_n
http://wiki.cython.org/enhancements/numpy
One more comment about the constructor described on the page above.
It would be good if we could have the same syntax as the current
numpy.ndarray, and then simply call through to the underlying C
constructor. We'd also need zeros
Stéfan wrote:"Unfortunately, RGBA images cannot be read this way. "
Apparently it does not work with 16bit greyscale tif images either.
For anyone else stumbling upon this thread, there is a work-about to get the
data into a numpy array.
i = Image.open('16bitGreyscaleImage.tif')
a = numpy.arra
Thank you for the reply. I in fact did not have the latest PIL binary. It works
beautifully now. Luckily I won't be needing RGBA support soon.
Izak
- Original Message
From: Stéfan van der Walt <[EMAIL PROTECTED]>
To: Discussion of Numerical Python
Sent: Monday, March 31, 2008 11:45:52
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