Two remarks:
1) Notation wise ( wrote:
> Note: y =. x m} y is in-place and faster for that reason.
>
> x=. q 3}&.|: x also does the amend in-place.
>
> It does appear that m}"r goes through rank processing (I thought the rank
> was handled in the verb).
>
> hhr
>
>
> On 12/26/2017 10:44 AM, R.E.
00 ?.@# 0
100 ts 'c=. q (
-Original Message-
From: Programming [mailto:programming-boun...@forums.jsoftware.com]
On Behalf Of David Mitchell
Sent: dinsdag 26 december 2017 12:15
To: programm...@jsoftware.com
Subject: Re: [Jprogramming] Clearing a screen in jqt and the best way to
re
gramming] Clearing a screen in jqt and the best way to
> replace a column
>
> Some choices:
>
> 2000 ts 'e=. q 3}&.|: x'
> 2.56966e_5 3571
> 2000 ts 'd=. q (3})"0 1 x'
> 5.65454e_5 43648
> 2000 ts
Original message From: Henry Rich Date:
12/23/17 15:53 (GMT-05:00) To: programm...@jsoftware.com Subject: Re:
[Jprogramming] Clearing a screen in jqt and the best way to replace a column
Your solution is good. There is special code for most of it. See
warnings at
htt
Ok, so, for this problem, I'd probably have used representative
simplifications, perhaps something like this:
tabprint=: {&'.@'
xtable=: ?5 5$2
table=: ?5 5$2
I might have also used several different threads to ask all the
questions.. (for example, if you wanted to preserve the shapes of the
indi
> On Sat, Dec 23, 2017 at 10:10 PM, devonmcc wrote:
>
> > I use an expression like this to update a column: (97 98 99) 2}&.|: i.
> 3
> > 3
> >
> >
> >
> >
> > Sent from my Verizon, Samsung Galaxy smartphone
> > Original message --
Sorry. I am too close to the problem. table and xtable are rank 2 boolean
tables of size 5 5, 10 10, 15 15, or 20 20.
Tabprint is rather complex, and pulls in data from both table and xtable
but also from other vectors and so forth. But for
the environment it is in, it will always produce a ran
You are not giving enough detail of what's going on here to really comment.
For example, in your expression:
recordtables =: recordtables,,: ((tabprint table),"1 (tabprint xtable))
you have not mentioned anywhere what xtable is like, nor what tabprint is like.
So you've presented an example
Using two transpositions was my first thought. I came to J from years of
dabbling with APL (first use was inn 1970ish on the 360/65 at the UofF
where they ran APL for two hours at lunch..instead of their homegrown
timesharing system, nd then on an 8K IBM 1130.
So, in a way I miss the APL syntax.
OK, so basically I was doing the rank wrong. Thanks. I wish I understood
verb rank well enough to understand why I was doing it wrong. I was trying
to make a list of pages. Basically, I was trying to make a rank 3 list of
rank 2 page images. I could have made a vector of boxed images but they
0:10 PM, devonmcc wrote:
> I use an expression like this to update a column: (97 98 99) 2}&.|: i. 3
> 3
>
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
> Original message From: Henry Rich
> Date: 12/23/17 15:53 (GMT-05:00) To: programm.
n in jqt and the best way to replace a column
Your solution is good. There is special code for most of it. See
warnings at
http://code.jsoftware.com/wiki/Vocabulary/SpecialCombinations#Whole-Array_Operations
Another possibility is
(($,)~ _2 */\ $) 0 2 1 3 |: > array
Henry Rich
On 12/
Your solution is good. There is special code for most of it. See
warnings at
http://code.jsoftware.com/wiki/Vocabulary/SpecialCombinations#Whole-Array_Operations
Another possibility is
(($,)~ _2 */\ $) 0 2 1 3 |: > array
Henry Rich
On 12/23/2017 2:29 PM, Jimmy Gauvin wrote:
I was expl
I was exploring the kind of problem lately and ended up with:
(,.97 98 99) (,2)}"1 i. 3 3
Left rank never occurred to me.
While we're playing with structures, is there a better way to unbox boxes
of arrays than the following:
(2 2$2)<;._3 i.6 6
┌─┬─┬─┐
│0 1 │2 3 │ 4 5│
│6 7
To modify acolumn:
97 98 99 (2})"0 1 i. 3 3
0 1 97
3 4 98
6 7 99
Henry Rich
On 12/23/2017 12:48 PM, Nick S wrote:
I have a 3d array that is the formatted output of a table. I capture
snapshots of it at different points in my processing, in a rank 3 array. I
want to flip between pages to
I have a 3d array that is the formatted output of a table. I capture
snapshots of it at different points in my processing, in a rank 3 array. I
want to flip between pages to see how the processing progresses. I thought
I would clear the screen, then display the output, that being one of the
stacke
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