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Announcing carray 0.2
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What it is
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carray is a container for numerical data that can be compressed
in-memory. The compresion process is carried out internally by Blosc,
a high-performance compressor that is optimized for binary data.
Having
Hello,
I have an array of non-numeric data, and I want to create a boolean
array denoting whether each element in this array is a valid value
or not. This is straightforward if there's only one possible valid
value:
import numpy as N
ar = N.array((a, b, c, b, b, a, d, c, a))
ar == a
array([
On Fri, Aug 27, 2010 at 3:58 PM, Brett Olsen brett.ol...@gmail.com wrote:
Hello,
I have an array of non-numeric data, and I want to create a boolean
array denoting whether each element in this array is a valid value
or not. This is straightforward if there's only one possible valid
value:
On Fri, Aug 27, 2010 at 15:10, Ken Watford kwatford+sc...@gmail.com wrote:
On Fri, Aug 27, 2010 at 3:58 PM, Brett Olsen brett.ol...@gmail.com wrote:
Hello,
I have an array of non-numeric data, and I want to create a boolean
array denoting whether each element in this array is a valid value
On Fri, Aug 27, 2010 at 1:17 PM, Robert Kern robert.k...@gmail.com wrote:
But in any case, that would be very slow for large arrays since it
would invoke a Python function call for every value in ar. Instead,
iterate over the valid array, which is much shorter:
mask = np.zeros(ar.shape,
On 27 August 2010 16:17, Robert Kern robert.k...@gmail.com wrote:
On Fri, Aug 27, 2010 at 15:10, Ken Watford kwatford+sc...@gmail.com wrote:
On Fri, Aug 27, 2010 at 3:58 PM, Brett Olsen brett.ol...@gmail.com wrote:
Hello,
I have an array of non-numeric data, and I want to create a boolean
On Fri, Aug 27, 2010 at 4:17 PM, Robert Kern robert.k...@gmail.com wrote:
On Fri, Aug 27, 2010 at 15:10, Ken Watford kwatford+sc...@gmail.com wrote:
On Fri, Aug 27, 2010 at 3:58 PM, Brett Olsen brett.ol...@gmail.com wrote:
Hello,
I have an array of non-numeric data, and I want to create a
Nils and Joseph,
Thanks for the bug report, this is now fixed in SVN (r8672).
Ralph. is this something that you want to see backported in 1.5 ?
Regards,
David
On Fri, Aug 6, 2010 at 7:49 PM, josef.p...@gmail.com wrote:
On Fri, Aug 6, 2010 at 4:53 PM, Nils Becker n.bec...@amolf.nl wrote:
On Fri, Aug 27, 2010 at 15:21, Nathaniel Smith n...@pobox.com wrote:
On Fri, Aug 27, 2010 at 1:17 PM, Robert Kern robert.k...@gmail.com wrote:
But in any case, that would be very slow for large arrays since it
would invoke a Python function call for every value in ar. Instead,
iterate over the
On Fri, Aug 27, 2010 at 15:32, David Huard david.hu...@gmail.com wrote:
Nils and Joseph,
Thanks for the bug report, this is now fixed in SVN (r8672).
While we're at it, can we change the name of the argument? normed
has caused so much confusion over the years. We could deprecate
normed=True in
I've been using bincount() in situations where I always want the count vector
to be a certain fixed length, even if the upper bins are 0. e.g. I want the
counts of 0 through 9, and if there are no 9's in the vector I'm counting, I'd
still like it to be at least length 10. It's kind of a pain to
On Fri, Aug 27, 2010 at 16:13, David Warde-Farley d...@cs.toronto.edu wrote:
I've been using bincount() in situations where I always want the count vector
to be a certain fixed length, even if the upper bins are 0. e.g. I want the
counts of 0 through 9, and if there are no 9's in the vector
On Fri, Aug 27, 2010 at 1:35 PM, Robert Kern robert.k...@gmail.com wrote:
[~]
|8 %timeit kern_in(ar, valid)
10 loops, best of 3: 115 ms per loop
[~]
|9 %timeit np.in1d(ar, valid)
1 loops, best of 3: 279 ms per loop
As valid gets larger, in1d() will catch up but for smallish sizes of
On 2010-08-27, at 5:15 PM, Robert Kern wrote:
How would people feel about an optional argument to support this behaviour?
I'd be happy with either a minlength or an exactly this length with
values above this range being ignored, but it seems like the latter might be
useful in more cases.
On Fri, Aug 27, 2010 at 2:47 PM, Robert Kern robert.k...@gmail.com wrote:
On Fri, Aug 27, 2010 at 15:32, David Huard david.hu...@gmail.com wrote:
Nils and Joseph,
Thanks for the bug report, this is now fixed in SVN (r8672).
While we're at it, can we change the name of the argument? normed
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