An example is a script which evaluates and plots electric and magnetic
fields under and near powerlines as well as some for T-line parameters.
A load flow program written in APL has been partially moved to J. J
lends itself to matrix manipulation such as using the Y matrix of a
system and from that forming the Z-Bus matrix which lends itself to
fault analysis. These are practical applications. The advantage of J
lies in the fact that the programming effort can be concentrated on the
problem rather than the declarations of variable types, etc. and
experimentation with individual parts of the script is easy to do. There
are businesses which had in the past used APL and could do the same with J
Yes the above are mathematical applications but are of concern and are
not "puzzles"
Don Kelly
On 2017-10-10 5:09 AM, Rob B wrote:
My many trips around the J home website have given me the impression that J is
very much geared to maths and puzzles.
I would be genuinely interested in reading about real world appllications of J.
Regards, Rob Burns.
On 10 Oct 2017, at 02:43, Don Kelly <[email protected]> wrote:
The possibility of a forum dealing with the extended variations would be
useful in that the present forum would then deal with more realistic problems
rather than the more esoteric ones. We don't need to slow down operations,
useful to all, to satisfy the needs of a few.
Any digital expression is limited by machine word limits and data limits.
Machine limits exceed data limits in most cases- -useful where multiple
operations result in digital fuzz that is insignificant relative to real data
fuzz.
Don Kelly
On 2017-10-09 12:29 PM, Raul Miller wrote:
I think this proposal would require, at minimum, a rewrite of ve.c
Also, each primitive which takes numeric arguments and/or produces a
numeric result would need a test to make sure it behaved properly for
each different mode of number handling.
Want to take a crack at it?
Thanks,
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For information about J forums see http://www.jsoftware.com/forums.htm
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For information about J forums see http://www.jsoftware.com/forums.htm
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For information about J forums see http://www.jsoftware.com/forums.htm
