Raul,
Yes you are right. The term "dyadic adverb" is a symptom of a fuzzy thinking
shortcut on my part. The rest of your explanation clarifies the issue.
Cheers, bob
> On Feb 19, 2018, at 12:21 PM, Raul Miller wrote:
>
> That said... "dyadic adverb" sounds like a shortcut
---
Actually, 3 {.\ 1 2 3 4 5 worked:
{. 1 2 3 gives you 1
{. 2 3 4 gives you 2
{. 3 4 5 gives you 3
So... the result of using {. with a sliding window is the first
element from each of those window instances.
Thanks,
--
Raul
On Mon, Feb 19, 2018 at 3:24 PM, Skip Cave wrote:
> Raul said:
>
> H
Raul said:
However, (1 2 3) is not a verb. So that gives you a domain error right
there, regardless of any right argument:
Doh! NOW i get it. ] is the verb and 3 is the noun.
So any verb should work...
3<\1 2 3 4 5
┌─┬─┬─┐
│ 1 2 3 │ 2 3 4 │ 3 4 5 │
└─┴─┴─┘
3{.\1 2 3
This is getting away from programming, tempting to take it to chat..
But if we're going to talk about technical details, the words we use
will tend to become technical.
That said... "dyadic adverb" sounds like a shortcut - and an ambiguous
one at that. So let's take it back a step:
You combine a
Raul,
I think I would have stopped with this part of your explanation.
> On Feb 19, 2018, at 11:47 AM, Raul Miller wrote:
>
> But keep in mind that the verb (]\) has two definitions: a monadic
> definition and a dyadic definition. So you should expect a different
> result from (3 ]\ i.4) than
[I'm using parenthesis, here to separate j expressions from
surrounding english text. That might be a little unfamiliar, but
hopefully it's not too bad... And, on the plus side, parenthesis are
valid J when their contents are valid J.]
] does replicate the right argument. And, for monadic verbs -
0 1 2 3 4]\1 2 3
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
1 0 0 0
2 0 0 0
3 0 0 0
0 0 0 0
1 2 0 0
2 3 0 0
0 0 0 0
0 0 0 0
1 2 3 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 1 2 3 4<\1 2 3
┌─┬───┬─┬┐
│ │ │ ││
├─┼───┼─┼┤
│1│2 │3││
├─┼───┼─┼┤
│1 2 │2 3│ ││
├─
Yes , my second example was hand- constructed, and I should have left off
the last line - 4 5 6 7
4 ]\ i.7
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
Skip Cave
Cave Consulting LLC
On Mon, Feb 19, 2018 at 1:38 PM, Raul Miller wrote:
> Or:
>
>4 ]\ i.8
> 0 1 2 3
> 1 2 3 4
> 2 3 4 5
> 3 4 5 6
Or:
4 ]\ i.8
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
4 5 6 7
It was a hand-constructed example - it's easy to say something
slightly different from what you want when you're doing that.
Thanks,
--
Raul
On Mon, Feb 19, 2018 at 2:21 PM, robert therriault
wrote:
> Probably just a glitch in what you
Thanks to all the informative responses. I knew there had to be a way to
use \ for the sliding window, but
it didn't occur to me to use ] to access the right argument.
so
]\1 2 3
1 0 0
1 2 0
1 2 3
but
1 2 3\1 2 3
|domain error
| 1 2 3 \1 2 3
I thought that ] replicated the right argument
Probably just a glitch in what you are looking for in the second example, but
it can be done with a little processing before using ]\
4 ]\ i. 7
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
4 (]\ (, >:@{:)) i.7
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
4 5 6 7
Cheers, bob
> On Feb 19, 2018, at 11:13 AM, Raul Mi
Will this do?
sw =: 1 : 'm ]\]'
3 sw i.6
0 1 2
1 2 3
2 3 4
3 4 5
4 sw i.7
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
On 19 February 2018 at 14:09, Skip Cave wrote:
> How can one create a sliding window in J?
>
> 3 sw i.6
>
> 0 1 2
> 1 2 3
> 2 3 4
> 3 4 5
>
> 4 sw i.7
> 0 1 2 3
> 1 2 3 4
> 2
3 ]\i.6
0 1 2
1 2 3
2 3 4
3 4 5
Or
sw=: ]\
Thanks,
--
Raul
On Mon, Feb 19, 2018 at 2:09 PM, Skip Cave wrote:
> How can one create a sliding window in J?
>
> 3 sw i.6
>
> 0 1 2
> 1 2 3
> 2 3 4
> 3 4 5
>
> 4 sw i.7
> 0 1 2 3
> 1 2 3 4
> 2 3 4 5
> 3 4 5 6
> 4 5 6 7
>
> What is the J code
Look into the likes of
+/~ i. 4
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
Change as needed to meet your spec.
Henry Rich
On 2/19/2018 2:09 PM, Skip Cave wrote:
How can one create a sliding window in J?
3 sw i.6
0 1 2
1 2 3
2 3 4
3 4 5
4 sw i.7
0 1 2 3
1 2 3 4
2 3 4 5
3 4 5 6
4 5 6 7
What
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