I was looking at those the other day and ran into a variety of difficulties.
I'll not bore you with the details, but I'll admit that I would love to see some pages devoted to example usages. I'm not really looking for comprehensive, in-depth documentation - that's already available through web searching ... if I can understand what terms I need to use to search on. What I'm looking for are cool examples - things that probe the possibilities, bits of prose perhaps which hint at relevant search terms. Failed attempts might also be useful, as stepping stones for finding or writing more better or slightly beautiful expositions. Thanks, -- Raul On Wed, Oct 2, 2013 at 12:27 PM, km <[email protected]> wrote: > Here is a resource that should be better known. To use it you load > ~addons/math/mt/mt.ijs --Kip Murray > > >>>> On Mon, Apr 8, 2013 at 3:17 AM, Kip Murray <[email protected]> wrote: >>> >>> 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. > > Sent from my iPad > >> On Oct 2, 2013, at 9:21 AM, Raul Miller <[email protected]> wrote: >> >> J's support for mechanisms to compute eigenvalues has been rather >> messy. And, by messy I mean that it looks like we rarely exercise >> these mechanisms - we don't have unit tests on the entry points to be >> run before uploading library updates, we don't have particularly good >> documentation on the code we have and there are other problems. >> >> Here's an example I stumbled over today: >> >> docs_jlapack_'' >> |value error: dirs >> | dirs jpathsep path,'doc/*.lap' >> require'dirs' >> not found: /Users/rdmiller/Applications/j64-801/bin/dirs >> |file name error: script >> | 0!:0 y[4!:55<'y' >> require 'dir' >> docs_jlapack_'' >> |value error: dirs >> | dirs jpathsep path,'doc/*.lap' >> getscripts_j_ 'dir' >> >> >> So here's a question: does anyone have the time and energy to put into >> this mess? >> >> Thanks, >> >> -- >> Raul >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
