D'oh, Zachary already gave that answer.
On Sun, Sep 19, 2010 at 10:17 PM, John Schulman wrote:
> Argsort twice and you get the rank.
>
> a1.argsort(axis=0).argsort(axis=0)
>
> That's because argsort is it's own inverse when applied to the ranks.
>
> On Tu
Argsort twice and you get the rank.
a1.argsort(axis=0).argsort(axis=0)
That's because argsort is it's own inverse when applied to the ranks.
On Tue, Sep 7, 2010 at 1:01 PM, Alexander Michael wrote:
> Calculating ranks by inverting the results of an argsort is
> straightforward and fast for 1D a
Hi all,
I just posted a recipe (http://code.activestate.com/recipes/577201/)
for infix operators that work with numpy arrays, so you can write X
*dot* Y. It works by making the Infix class a subclass of ndarray.
John
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For the numpy/scipyers at Caltech now:
I'm wondering what is happening with the scipy09 sprints. According to
the website, the sprints start at 8AM in Powell Booth, but that
building is locked and there's no sign of life.
Best,
John
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I'm trying to reduce the memory used in a calculation, so I'd like to
switch my program to float32 instead of float64. Is it possible to
change the numpy default float size, so I don't have to explicitly
state dtype=np.float32 everywhere?
Thanks,
John
__
What's the best way to install a 64-bit python alongside my existing
installation?
On Tue, Jun 9, 2009 at 7:32 AM, John Schulman wrote:
> OK looks like that was the issue
> $ python -c "import platform; print platform.machine()"
> i386
>
> Thanks
>
>
>
OK looks like that was the issue
$ python -c "import platform; print platform.machine()"
i386
Thanks
On Tue, Jun 9, 2009 at 2:52 AM, David
Cournapeau wrote:
> Charles R Harris wrote:
>>
>>
>> On Tue, Jun 9, 2009 at 2:32 AM, John Schulman > <mailto:jos.
I'm getting the error
OverflowError: cannot fit 'long' into an index-sized integer
when I try to memmap a 6gb file
top of the stack trace is
mm = mmap.mmap(fid.fileno(), bytes, access=acc)
where bytes = 652800L
I thought that 64-bit systems with python>2.5 could memmap large
files. I'm runnin
