Versions:
sys.version
'3.3.2 (default, Mar 5 2014, 08:21:05) \n[GCC 4.8.2 20131212 (Red Hat
4.8.2-7)]'
numpy.__version__
'1.8.0'
Problem:
I'm trying to unpick the shape requirements of numpy.linalg.solve().
The help text says:
solve(a, b) -
a : (..., M, M) array_like
On Di, 2014-04-01 at 15:31 +0100, Bob Dowling wrote:
Versions:
sys.version
'3.3.2 (default, Mar 5 2014, 08:21:05) \n[GCC 4.8.2 20131212 (Red Hat
4.8.2-7)]'
numpy.__version__
'1.8.0'
Problem:
I'm trying to unpick the shape requirements of numpy.linalg.solve().
The help text
On Mon, Mar 24, 2014 at 6:33 PM, Nathaniel Smith n...@pobox.com wrote:
On Mon, Mar 24, 2014 at 11:58 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Mon, Mar 24, 2014 at 5:56 PM, Nathaniel Smith n...@pobox.com wrote:
On Sat, Mar 22, 2014 at 6:13 PM, Nathaniel Smith n...@pobox.com
On Tue, Apr 1, 2014 at 3:57 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
If `a` has exactly one dimension more then `b`, the first case is used.
Otherwise (..., M, K) is used instead. To make sure you always get the
expected result, it may be best to make sure that the number of
On Mon, Mar 31, 2014 at 3:09 PM, Matthew Brett matthew.br...@gmail.comwrote:
I am hopelessly lost here, but it looks as though Python extension
modules get loaded via
hDLL = LoadLibraryEx(pathname, NULL,
LOAD_WITH_ALTERED_SEARCH_PATH);
See:
On Mon, Mar 31, 2014 at 7:19 PM, Nathaniel Smith n...@pobox.com wrote:
The difference is that datetime.datetime doesn't provide any iso string
parsing.
Sure it does. datetime.strptime, with the %z modifier in particular.
that's not ISO parsing, that's parsing according to a user-defined
On Tue, Apr 1, 2014 at 12:10 PM, Chris Barker chris.bar...@noaa.gov wrote:
For a naive object, the %z and %Z format codes are replaced by empty
strings.
though I'm not entirely sure what that means -- probably only for writing.
That's right:
from datetime import *
On Tue, Apr 1, 2014 at 12:10 PM, Chris Barker chris.bar...@noaa.gov wrote:
It seems this committee of two has come to a consensus on naive -- and
you're probably right, raise an exception if there is a time zone specifier.
Count me as +1 on naive, but consider converting garbage (including
On Tue, Apr 1, 2014 at 5:22 PM, Alexander Belopolsky ndar...@mac.com wrote:
On Tue, Apr 1, 2014 at 12:10 PM, Chris Barker chris.bar...@noaa.gov wrote:
It seems this committee of two has come to a consensus on naive -- and
you're probably right, raise an exception if there is a time zone
Hi,
On Tue, Apr 1, 2014 at 9:04 AM, Chris Barker chris.bar...@noaa.gov wrote:
On Mon, Mar 31, 2014 at 3:09 PM, Matthew Brett matthew.br...@gmail.com
wrote:
I am hopelessly lost here, but it looks as though Python extension
modules get loaded via
hDLL = LoadLibraryEx(pathname, NULL,
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com wrote:
I'm guessing that the LOAD_WITH_ALTERED_SEARCH_PATH means that a DLL loaded
via:
hDLL = LoadLibraryEx(pathname, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
will in turn (by default) search for its dependent DLLs in
Hi,
On Tue, Apr 1, 2014 at 10:43 AM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com wrote:
I'm guessing that the LOAD_WITH_ALTERED_SEARCH_PATH means that a DLL loaded
via:
hDLL = LoadLibraryEx(pathname, NULL,
I agree with that interpretation of naive as well. I'll change the proposal to
reflect that. So any modifier should raise an error then? (At the risk of
breaking people's code.)
The only question is, should we consider accepting the modifier and disregard
it with a warning, letting the user
Hi,
I just noticed this C reference implementation of blas:
https://github.com/rljames/coblas
No lapack, no benchmarks, but tests, and BSD. I wonder if it is
possible to craft a Frankenlibrary from OpenBLAS and reference
implementations to avoid broken parts of OpenBLAS?
Cheers,
Matthew
While most other Python applications (scipy, pandas) use for the calculation of
the standard deviation the default ddof=1 (i.e. they calculate the sample
standard deviation), the Numpy implementation uses the default ddof=0.
Personally I cannot think of many applications where it would be
On Tue, Apr 1, 2014 at 1:12 PM, Nathaniel Smith n...@pobox.com wrote:
In [6]: a[0] = garbage
ValueError: could not convert string to float: garbage
(Cf, Errors should never pass silently.) Any reason why datetime64
should be different?
datetime64 is different because it has NaT support
Because np.mean() is ddof=0? (I mean effectively, not that it actually has
a parameter for that) There is consistency within the library, and I
certainly wouldn't want to have NaN all of the sudden coming from my calls
to mean() that I apply to an arbitrary non-empty array of values that
happened
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
Personally I cannot think of many applications where it would be desired
to calculate the standard deviation with ddof=0. In addition, I feel that
there should be consistency between standard modules such as numpy, scipy,
and pandas.
I agree; breaking code over this would be ridiculous. Also, I prefer the
zero default, despite the mean/std combo probably being more common.
On Tue, Apr 1, 2014 at 10:02 PM, Sturla Molden sturla.mol...@gmail.comwrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
Personally I
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
Personally I cannot think of many applications where it would be desired
to calculate the standard deviation with ddof=0. In addition, I feel that
there should be
On 04/01/2014 04:25 PM, Nathaniel Smith wrote:
On Tue, Apr 1, 2014 at 3:57 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
If `a` has exactly one dimension more then `b`, the first case is used.
Otherwise (..., M, K) is used instead. To make sure you always get the
expected result, it
On Di, 2014-04-01 at 16:25 +0100, Nathaniel Smith wrote:
On Tue, Apr 1, 2014 at 3:57 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
If `a` has exactly one dimension more then `b`, the first case is used.
Otherwise (..., M, K) is used instead. To make sure you always get the
expected
On Tue, Apr 1, 2014 at 10:08 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com
wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
Personally I cannot think of many applications where it would be desired
to calculate
On Tue, Apr 1, 2014 at 2:08 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com
wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
Personally I cannot think of many applications where it would be desired
to calculate
On Tue, Apr 1, 2014 at 9:51 PM, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Tue, Apr 1, 2014 at 10:08 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com
wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
On Tue, Apr 1, 2014 at 4:54 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Tue, Apr 1, 2014 at 2:08 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com
wrote:
Haslwanter Thomas thomas.haslwan...@fh-linz.at wrote:
On Tue, Apr 1, 2014 at 9:50 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
On Di, 2014-04-01 at 16:25 +0100, Nathaniel Smith wrote:
On Tue, Apr 1, 2014 at 3:57 PM, Sebastian Berg
sebast...@sipsolutions.net wrote:
If `a` has exactly one dimension more then `b`, the first case is used.
On Tue, Apr 1, 2014 at 5:11 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:51 PM, Ralf Gommers ralf.gomm...@gmail.com wrote:
On Tue, Apr 1, 2014 at 10:08 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 9:02 PM, Sturla Molden sturla.mol...@gmail.com
On Tue, Apr 1, 2014 at 6:43 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com
wrote:
I'm guessing that the LOAD_WITH_ALTERED_SEARCH_PATH means that a DLL
loaded via:
hDLL = LoadLibraryEx(pathname, NULL,
On Tue, Apr 1, 2014 at 11:58 PM, David Cournapeau courn...@gmail.com wrote:
On Tue, Apr 1, 2014 at 6:43 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com
wrote:
I'm guessing that the LOAD_WITH_ALTERED_SEARCH_PATH means that a DLL
On Wed, Apr 2, 2014 at 12:36 AM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 11:58 PM, David Cournapeau courn...@gmail.com
wrote:
On Tue, Apr 1, 2014 at 6:43 PM, Nathaniel Smith n...@pobox.com wrote:
On Tue, Apr 1, 2014 at 6:26 PM, Matthew Brett matthew.br...@gmail.com
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