Yes that is correct; u"n M always divides up into cells formed by grouping the
last n dimensions together. Another way to see it is that elements of the array
M who have the same (#$M) - n first indices are grouped together.
A variant on u"n M is "(-n), which is roughly equivalent to u"((#$M)-n)
there is diffraction when light travels inside atmosphere.
On Feb 28, 2018 12:16 PM, "Don Kelly" wrote:
> If the observer is standing at some point on the surface of the earth.and
> is facing in a given direction with the straight edge. you are looking as
> you describe. If facing another direc
Maybe the steel straight edge was some hundreds of meters long? An
interesting point about this is that back when I worked in a machine shop
for a summer we would commonly set keyway cuts by eye and one of the master
machinists proved to me that it was possible to do so within 0.001" on 1"
cold ro
Someone please tell me if I understand this:
If I have a list of 5x5 tables, that is, a thing with a shape of n 5 5
where n is anything from 1 to 30, That is, the shape of the table might be
(5 5 or 2 5 5 or 3 5 5 etc.) and I want to compare it against a single 5x5
thing in 5x5 groups, the proper
If the observer is standing at some point on the surface of the
earth.and is facing in a given direction with the straight edge. you are
looking as you describe. If facing another direction, you are , by
symmetry, looking at the same curvature and the same distance to the
horizon. You are look
Someone once told me that the only phrase an academic needs in any
language is "Well, it's not that simple ..."
If the height of the observer is 0, then the horizon is the plane through
the observer perpendicular to the zenith direction - it's a great circle
and there is no curvature. But if y
Try <.@%: .
I believe it returns extended results on extended arguments.
Cheers,
Louis
> On 27 Feb 2018, at 20:56, Don Kelly wrote:
>
> I agree with the series approach but the final result depends on division
> which has limited accuracy. I would suggest using the following which uses
> 100*
I agree with the series approach but the final result depends on
division which has limited accuracy. I would suggest using the following
which uses 100*L%R as a rational fraction
(10^_2)*(1r2)* 175r637816300
1.37187e_9
However, the solution is wrong in any case. It is the result of using a
Thanks, all fixed now.
On Mon, Feb 26, 2018 at 1:48 PM, William Szuch
wrote:
> Using:
>
> JVERSION
>
> Engine: j806/j64/windows
>
> Release: commercial/2017-11-06T10:03:54
>
> Library: 8.06.09
>
> Qt IDE: 1.6.2/5.6.3
>
> Platform: Win 64
>
> Installer: J806 install
>
> InstallPath: c:/users/will
Memory failure again...
Mike
On 27/02/2018 11:37, R.E. Boss wrote:
-Original Message-
From: Programming [mailto:programming-boun...@forums.jsoftware.com]
On Behalf Of 'Mike Day' via Programming
Sent: dinsdag 27 februari 2018 11:31
To: programm...@jsoftware.com
Subject: Re: [Jprogrammin
Excellent explanations of the use of &. from Mike Day & Raul.
Mike's explanation of "multiplication the hard way" using logs
really helped clear up what is going on with &.
3*4
12
^.^:_1 (^.3)+^.4
12
3+&.^.4
12
3 4 5 + &.^. 4 5 6
12 20 30
Now to examine Raul's solution:
,.&.":&.>a
> -Original Message-
> From: Programming [mailto:programming-boun...@forums.jsoftware.com]
> On Behalf Of 'Mike Day' via Programming
> Sent: dinsdag 27 februari 2018 11:31
> To: programm...@jsoftware.com
> Subject: Re: [Jprogramming] Separating digits
>
()
> You might remember David S
I'll run through a perhaps shallow description of my approach -
hopefully that will show you enough of what's going on to also help
understand R.E. Boss's approach. My hope here is that looking at this
from a different perspective will help you build your understanding...
a=. 10 345 64 5642 11
It looks as if you don't appreciate the action of " &. " The
dot/period/full-stop is
significant. Whereas & is bond/compose, &. and &.: are both
"Under(Dual) " .
NuVoc says (http://code.jsoftware.com/wiki/Vocabulary/ampdot)
[x] u &. v y
executes v on the argument (s) cell by cell
. for each
That's how I started out: plunging into 3-D geometry. Then I realised I
could replace the horizon with the great circle passing through the
straight-edge, giving a simpler treatment valid for an observer at the
earth's surface. I was pleasantly surprised that this lost the need not
only for my heig
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