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 wrote: > Hi, > > On Tue, Jun 26, 2012 at 5:04 PM, Charles R Harris > wrote: >> >> >> On Tue, Jun 26, 2012 at 5:46 PM, Matthew Brett >> wrote: >>> >>> Hi, >>> >>> On Tue, Jun 26, 2012 at 4:39 PM, Benjamin Root wrote: >>> > >>> > >>> > On Tuesda

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 wrote: > > > On Tue, Jun 26, 2012 at 5:46 PM, Matthew Brett > wrote: >> >> Hi, >> >> On Tue, Jun 26, 2012 at 4:39 PM, Benjamin Root wrote: >> > >> > >> > On Tuesday, June 26, 2012, Charles R Harris wrote: >> >> >> >> >> >> >> >> On Tue, Jun

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 wrote: > Hi, > > On Tue, Jun 26, 2012 at 4:39 PM, Benjamin Root wrote: > > > > > > On Tuesday, June 26, 2012, Charles R Harris wrote: > >> > >> > >> > >> On Tue, Jun 26, 2012 at 3:42 PM, Matthew Brett > > >> wrote: > >> > >> Hi, > >> > >> On Mon, Ju

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 wrote: > > > On Tuesday, June 26, 2012, Charles R Harris wrote: >> >> >> >> On Tue, Jun 26, 2012 at 3:42 PM, Matthew Brett >> wrote: >> >> Hi, >> >> On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett >> wrote: >> > Hi, >> > >> > On Sun, Jun 17, 201

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 wrote: > > Hi, > > On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett > wrote: > > Hi, > > > > On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris > > wrote: > >> > >> > >> On Sat, Jun 16, 2012 at 2

[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 wrote: >> On Sat, Jun 16, 2012 at 9:03 PM, Matthew Brett >> wrote: >>> Hi, >>> >>> On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris wrote: > > > On Thu, Jun 14, 201

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 wrote: > Hi, > > On Mon, Jun 18, 2012 at 3:50 PM, Matthew Brett > wrote: > > Hi, > > > > On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris > > wrote: > >> > >> > >> On Sat, Jun 16, 2012 at 2:33 PM, Matthew Brett > > >> wrote: > >>> > >>> Hi, > >>>

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 wrote: > Hi, > > On Sun, Jun 17, 2012 at 7:22 PM, Charles R Harris > wrote: >> >> >> On Sat, Jun 16, 2012 at 2:33 PM, Matthew Brett >> wrote: >>> >>> Hi, >>> >>> On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett >>> wrote: >>> > Hi, >>> > >>> > O

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 wrote: > > > On Sat, Jun 16, 2012 at 2:33 PM, Matthew Brett > wrote: >> >> Hi, >> >> On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett >> wrote: >> > Hi, >> > >> > On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: >> >> On Fri, Jun 15,

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 wrote: > Hi, > > On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett > wrote: > > Hi, > > > > On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: > >> On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris > >> wrote: > >>> > >>> > >>> On Thu, Jun 14, 2

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 wrote: > Hi, > > On Sat, Jun 16, 2012 at 8:03 PM, Matthew Brett > wrote: >> Hi, >> >> On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: >>> On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris >>> wrote: On Thu, Jun 14, 201

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 wrote: > On Sat, Jun 16, 2012 at 9:03 PM, Matthew Brett > wrote: >> Hi, >> >> On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: >>> On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris >>> wrote: On Thu, Jun 14, 2012 at 8:06 P

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 wrote: > Hi, > > On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: >> On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris >> wrote: >>> >>> >>> On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett >>> wrote: Hi, I noticed that nu

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 wrote: > Hi, > > On Sat, Jun 16, 2012 at 10:40 AM, Nathaniel Smith wrote: >> On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris >> wrote: >>> >>> >>> On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett >>> wrote: Hi, I noticed th

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 wrote: > On Fri, Jun 15, 2012 at 4:10 AM, Charles R Harris > wrote: >> >> >> On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett >> wrote: >>> >>> Hi, >>> >>> I noticed that numpy.linalg.matrix_rank sometimes gives full rank for >>> matrices that

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 wrote: > > > On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett > wrote: >> >> 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,

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 wrote: > Hi, > > On Thu, Jun 14, 2012 at 8:10 PM, Charles R Harris > wrote: > > > > > > On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett > > wrote: > >> > >> Hi, > >> > >> I noticed that numpy.linalg.matrix_rank sometimes gives full rank for > >> matr

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 wrote: > > > On Thu, Jun 14, 2012 at 8:06 PM, Matthew Brett > wrote: >> >> Hi, >> >> I noticed that numpy.linalg.matrix_rank sometimes gives full rank for >> matrices that are numerically rank deficient: >> >> If I repeatedly make random matr

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 wrote: > 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

[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,