the verb dgeev_jlapack2_ calls the fortran subroutine
NB. subroutine dgeev ( character JOBVL,
NB.character JOBVR,
NB.integer N,
NB.double precision
Present: Art Anger, Raul Miller, and Bob Therriault
1) Bob showed off the work that he has been doing in category trees
https://code.jsoftware.com/wiki/Page_Map and is in the process of categorizing
all the pages in the wiki. Originally, he was categorizing across a number of
subtrees until he
All, but 1 or 2 of https://code.jsoftware.com/wiki/Vocabulary/ModifierTrains
are extremely useful. Their use is mainly in creating compound modifiers
(expressions that return modifiers) or quick modifiers.
The core "adverbial programming" in J has always been the much simpler adverb
sequence t
I noticed that dgeev returns real & imaginary parts of the complex
eigenvectors -- reasonable, but unexpected.
J9.04k Windows
load '~addons/math/lapack2/example/dgeev.ijs'
ev
0.799482 _0.0994125j0.400792 _0.0994125j_0.400792 _0.100657
vr
_0.655089 _0.193302 0.254632 0.125333
_0.523629 0.25185
The reason it's hard to find anything else on modifier trains is that they
have been removed from the language a long time ago (with j501 in 2002,
apparently), and only reintroduced recently with j903.
Before the reintroduction, the only modifier trains were bidents:
- partially applied conjunctio
For documentation, it looks like
https://code.jsoftware.com/wiki/Vocabulary/LAPACK
and maybe
https://code.jsoftware.com/wiki/Addons/math/lapack
should be decent.
As for the definitions themselves, it looks like
require'math/lapack2'
brings in all of the lapack2 the definitions, and that they
Thank you for your answer!
The example is running perfectly, but the eigenvalues, the eigenvectors and
SVD are not.
I do not understand why?
load'math/lapack2'
load'math/lapack2/example/dgeev'
0.799482 _0.0994125j0.400792 _0.0994125j_0.400792 _0.100657
┌
