Re: [Numpy-discussion] Tests for empty arrays

2008-05-06 Thread Keith Goodman
On Tue, May 6, 2008 at 10:03 AM, Timothy Hochberg <[EMAIL PROTECTED]> wrote: > Why don't you just roll your own? > > >>> def nans(shape, dtype=float): > ... a = np.empty(shape, dtype) > ... a.fill(np.nan) > ... return a > ... > >>> nans([3,4]) > array([[ NaN, NaN, NaN, NaN], >

Re: [Numpy-discussion] Tests for empty arrays

2008-05-06 Thread Timothy Hochberg
On Tue, May 6, 2008 at 9:53 AM, Keith Goodman <[EMAIL PROTECTED]> wrote: > On Tue, May 6, 2008 at 9:45 AM, Anne Archibald > <[EMAIL PROTECTED]> wrote: > > In fact, if you want to use empty() down the road, it may > > make sense to initialize your array to zeros()/0., so that if you ever > > use

Re: [Numpy-discussion] Tests for empty arrays

2008-05-06 Thread Keith Goodman
On Tue, May 6, 2008 at 9:45 AM, Anne Archibald <[EMAIL PROTECTED]> wrote: > In fact, if you want to use empty() down the road, it may > make sense to initialize your array to zeros()/0., so that if you ever > use the values, the NaNs will propagate and become obvious. Numpy has ones and zeros.

Re: [Numpy-discussion] Tests for empty arrays

2008-05-06 Thread Anne Archibald
2008/5/6 Andy Cheesman <[EMAIL PROTECTED]>: > I was wondering if anyone could shed some light on how to distinguish an > empty array of a given shape and an zeros array of the same dimensions. An "empty" array, that is, an array returned by the function empty(), just means an uninitialized arra

Re: [Numpy-discussion] Tests for empty arrays

2008-05-06 Thread Timothy Hochberg
On Tue, May 6, 2008 at 9:31 AM, Andy Cheesman <[EMAIL PROTECTED]> wrote: > Hi nice numpy people > > I was wondering if anyone could shed some light on how to distinguish an > empty array of a given shape and an zeros array of the same dimensions. An empty array is just uninitialized, while a zer

[Numpy-discussion] Tests for empty arrays

2008-05-06 Thread Andy Cheesman
Hi nice numpy people I was wondering if anyone could shed some light on how to distinguish an empty array of a given shape and an zeros array of the same dimensions. Thanks Andy ___ Numpy-discussion mailing list Numpy-discussion@scipy.org http://proje