-boun...@scipy.org] On Behalf Of Bruce Southey
Sent: Wednesday, August 31, 2011 11:11 AM
To: numpy-discussion@scipy.org
Subject: Re: [Numpy-discussion] Question on LinAlg Inverse Algorithm
On 08/31/2011 12:56 PM, Mark Janikas wrote:
> Right indeed... I have spent a lot of time looking at this and
n...@scipy.org
> [mailto:numpy-discussion-boun...@scipy.org] On Behalf Of Pauli Virtanen
> Sent: Wednesday, August 31, 2011 2:00 AM
> To: numpy-discussion@scipy.org
> Subject: Re: [Numpy-discussion] Question on LinAlg Inverse Algorithm
>
> On Tue, 30 Aug 2011 15:48:18 -0700, Mark J
large? Ill poke
around. TY!
MJ
-Original Message-
From: numpy-discussion-boun...@scipy.org
[mailto:numpy-discussion-boun...@scipy.org] On Behalf Of Pauli Virtanen
Sent: Wednesday, August 31, 2011 2:00 AM
To: numpy-discussion@scipy.org
Subject: Re: [Numpy-discussion] Question on LinAlg
On Tue, 30 Aug 2011 15:48:18 -0700, Mark Janikas wrote:
> Last week I posted a question involving the identification of linear
> dependent columns of a matrix... but now I am finding an interesting
> result based on the linalg.inv() function... sometime I am able to
> invert a matrix that has linea
Message-
From: numpy-discussion-boun...@scipy.org
[mailto:numpy-discussion-boun...@scipy.org] On Behalf Of Robert Kern
Sent: Tuesday, August 30, 2011 4:42 PM
To: Discussion of Numerical Python
Subject: Re: [Numpy-discussion] Question on LinAlg Inverse Algorithm
On Tue, Aug 30, 2011 at 17:48
On Tue, Aug 30, 2011 at 17:48, Mark Janikas wrote:
> Hello All,
>
> Last week I posted a question involving the identification of linear
> dependent columns of a matrix… but now I am finding an interesting result
> based on the linalg.inv() function… sometime I am able to invert a matrix
> that ha
On Tue, Aug 30, 2011 at 18:34, Mark Janikas wrote:
> When I export to ascii I am losing precision and it getting consistency... I
> will try a flat dump. More to come. TY
Might as well np.save() it to an .npy binary file and attach it.
--
Robert Kern
"I have come to believe that the whole w
PM
To: Discussion of Numerical Python
Subject: Re: [Numpy-discussion] Question on LinAlg Inverse Algorithm
Working on it... Give me a few minutes to get you the data. TY!
MJ
-Original Message-
From: numpy-discussion-boun...@scipy.org
[mailto:numpy-discussion-boun...@scipy.org] On
Subject: Re: [Numpy-discussion] Question on LinAlg Inverse Algorithm
Can you give an example matrix? I'm not a numerical linear algebra
expert, but I suspect that if your matrix is singular (or nearly so,
in floating point) then any inverse given will look pretty wonky. Huge
determinant, eigenv
Can you give an example matrix? I'm not a numerical linear algebra
expert, but I suspect that if your matrix is singular (or nearly so,
in floating point) then any inverse given will look pretty wonky. Huge
determinant, eigenvalues, operator norm, etc..
-Chris JS
On Tue, Aug 30, 2011 at 5:48 PM,
On Tue, Aug 30, 2011 at 17:48, Mark Janikas wrote:
> Hello All,
>
> Last week I posted a question involving the identification of linear
> dependent columns of a matrix… but now I am finding an interesting result
> based on the linalg.inv() function… sometime I am able to invert a matrix
> that ha
Hello All,
Last week I posted a question involving the identification of linear dependent
columns of a matrix... but now I am finding an interesting result based on the
linalg.inv() function... sometime I am able to invert a matrix that has linear
dependent columns and other times I get the Lin
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