Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-07-14 Thread Matthew Brett
Hi, On Tue, Jun 26, 2012 at 7:29 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Tue, Jun 26, 2012 at 5:04 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Tue, Jun 26, 2012 at 5:46 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Tue, Jun 26, 2012 at 4:39 PM,

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread Matthew Brett
Hi, On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Sat, Jun 16, 2012 at 2:33 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 8:03 PM,

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread Charles R Harris
On Tue, Jun 26, 2012 at 3:42 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Sat, Jun 16, 2012 at 2:33 PM,

[Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread JB Poline
On Sat, Jun 16, 2012 at 4:39 PM, Nathaniel Smith n...@pobox.com wrote: On Sat, Jun 16, 2012 at 9:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread Benjamin Root
On Tuesday, June 26, 2012, Charles R Harris wrote: On Tue, Jun 26, 2012 at 3:42 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread Matthew Brett
Hi, On Tue, Jun 26, 2012 at 4:39 PM, Benjamin Root ben.r...@ou.edu wrote: On Tuesday, June 26, 2012, Charles R Harris wrote: On Tue, Jun 26, 2012 at 3:42 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett matthew.br...@gmail.com wrote:

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread Charles R Harris
On Tue, Jun 26, 2012 at 5:46 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, On Tue, Jun 26, 2012 at 4:39 PM, Benjamin Root ben.r...@ou.edu wrote: On Tuesday, June 26, 2012, Charles R Harris wrote: On Tue, Jun 26, 2012 at 3:42 PM, Matthew Brett matthew.br...@gmail.com

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-26 Thread Matthew Brett
Hi, On Tue, Jun 26, 2012 at 5:04 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Tue, Jun 26, 2012 at 5:46 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Tue, Jun 26, 2012 at 4:39 PM, Benjamin Root ben.r...@ou.edu wrote: On Tuesday, June 26, 2012, Charles R Harris

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-18 Thread Matthew Brett
Hi, On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Sat, Jun 16, 2012 at 2:33 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-17 Thread Matthew Brett
Hi, On Sat, Jun 16, 2012 at 1:33 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-17 Thread Charles R Harris
On Sat, Jun 16, 2012 at 2:33 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-16 Thread Nathaniel Smith
On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris charlesr.har...@gmail.com wrote: On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, I noticed that numpy.linalg.matrix_rank sometimes gives full rank for matrices that are numerically rank deficient: If I

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-16 Thread Matthew Brett
Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris charlesr.har...@gmail.com wrote: On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, I noticed that numpy.linalg.matrix_rank

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-16 Thread Matthew Brett
Hi, On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris charlesr.har...@gmail.com wrote: On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-16 Thread Nathaniel Smith
On Sat, Jun 16, 2012 at 9:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris charlesr.har...@gmail.com wrote: On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-16 Thread josef . pktd
On Sat, Jun 16, 2012 at 4:39 PM, Nathaniel Smith n...@pobox.com wrote: On Sat, Jun 16, 2012 at 9:03 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith n...@pobox.com wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-15 Thread Matthew Brett
Hi, On Thu, Jun 14, 2012 at 8:10 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, I noticed that numpy.linalg.matrix_rank sometimes gives full rank for matrices that are numerically rank deficient:

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-15 Thread Charles R Harris
On Fri, Jun 15, 2012 at 6:39 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, On Thu, Jun 14, 2012 at 8:10 PM, Charles R Harris charlesr.har...@gmail.com wrote: On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett matthew.br...@gmail.com wrote: Hi, I noticed that

[Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-14 Thread Matthew Brett
Hi, I noticed that numpy.linalg.matrix_rank sometimes gives full rank for matrices that are numerically rank deficient: If I repeatedly make random matrices, then set the first column to be equal to the sum of the second and third columns: def make_deficient():    X = np.random.normal(size=(40,

Re: [Numpy-discussion] Matrix rank default tolerance - is it too low?

2012-06-14 Thread Charles R Harris
On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett matthew.br...@gmail.comwrote: Hi, I noticed that numpy.linalg.matrix_rank sometimes gives full rank for matrices that are numerically rank deficient: If I repeatedly make random matrices, then set the first column to be equal to the sum of the