Thanks a lot, Igor, for the example and all the work you put into the
library. Both methods (1) and (2) chug along for a few minutes but end up
spitting out a result that looks reasonable.
Cheers,
Mike
On Tue, Apr 9, 2013 at 12:51 AM, Igor Zhuravlov wrote:
> On 8 апреля 2013 22:53:13 Michal
Hi -
did you see something like this from Igor Z?
load 'math/mt'
geevlnn=: {.@ggevlnn_mt_@(,:(idmat_mt_@c_mt_))
geevlnn i.2 2
_0.561553 3.56155
geevlnn p: i.4 4
104.336 _4.54479 1.02295 _1.81419
I don't know what's a canonical matrix to use for eigenvalue demonstration,
so these wil
Thanks - I had a good idea what it was from the name and usage. Thanks
for putting this package together.
It's good to have a portable J-based solution.
On Mon, Apr 8, 2013 at 11:27 PM, Igor Zhuravlov wrote:
> On 8 апреля 2013 11:51:05 Devon McCormick wrote:
> > I attempted to use one of the
On 8 апреля 2013 22:53:13 Michal D. wrote:
> I haven't been able to sort through the mt code to decipher how to call the
> routines with a single input matrix. It looks like quite a substantial
> amount of important work.
load'math/mt'
NB. generate random symmetric 4x4-matrix to play with
The good news is my matrix is symmetric, the bad news is that the jacobi
routine never seems to terminate.
I haven't been able to sort through the mt code to decipher how to call the
routines with a single input matrix. It looks like quite a substantial
amount of important work.
I'm not sure to
On 8 апреля 2013 11:51:05 Devon McCormick wrote:
> I attempted to use one of the math/mt routines (geev) but get a value error
> on "trsmu1x" which does not appear to be defined anywhere.
Thank you for reporting this bug. Now it is fixed. Please, update mt addon to
version 0.9.1.
--
WBR
Igor
-
On Mon, Apr 8, 2013 at 12:45 AM, Michal D. wrote:
> Ps. There is nothing I like better than generating random input data using
> J. What took pages of Haskell and TCL was boiled down to 7 clear lines of
> J. WOW =)
Now there are two languages rarely mentioned in the same breath.
---
Did you begin by loading ~addons/math/mt/mt.ijs ? --Kip Murray
Sent from my iPad
On Apr 8, 2013, at 10:51 AM, Devon McCormick wrote:
> I attempted to use one of the math/mt routines (geev) but get a value error
> on "trsmu1x" which does not appear to be defined anywhere.
>
> There is a Jaco
I attempted to use one of the math/mt routines (geev) but get a value error
on "trsmu1x" which does not appear to be defined anywhere.
There is a Jacobi solver in ~addons/math/misc/jacobi that appears to work
for a symmetric argument. Also, there's the code from Donald McIntyre's
article on Jaco
Igor Zhuravlof provides j routines that model LAPACK routines for
eigenvalues and eigenvectors. See "matrix toolbox"
~addons/math/mt
with contents summarized in
~addons/math/mt/mt.ijs
I have not tried them but would expect them to run in j701JHS.
--Kip Murray
On 4/8/2013 12:45 AM, Michal D
the lapack package has been updated to support 64-bit linux.
Вс, 07 апр 2013, Michal D. писал(а):
> Hi All,
>
> I have been trying to get J to compute the eigen values & vectors of a
> matrix. I've come across
> http://www.jsoftware.com/jwiki/Essays/Eigenvaluesbut none of the
> algorithms there
Hi All,
I have been trying to get J to compute the eigen values & vectors of a
matrix. I've come across
http://www.jsoftware.com/jwiki/Essays/Eigenvaluesbut none of the
algorithms there seem stable on my input matrix and the
lapack package doesn't seem to work on 64-bit J. I laboriously exported
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