j802,
I get value error pd_png (or pd_bmp, pd_jpg). in j6 and jhs too. j6 has the
media addon installed. I don't think is available in j8, but j8 error messages
still say it requires it (when trying to save to other than bmp).
'show ; save bmp' plot i.10 NB. or without 'show;' or with 'show; output'
syntax error: qt_bmp
| ('qt_',type)~(1+#type)}.y
----- Original Message -----
From: bill lam <[email protected]>
To: 'Pascal Jasmin' via Programming <[email protected]>
Cc:
Sent: Saturday, April 18, 2015 9:55 PM
Subject: Re: [Jprogramming] an interesting plot toy
see output commands of that webpage, eg
'output png' plot i.10
Вс, 19 апр 2015, jprogramming написал(а):
> Bill:
>
> I cannot get any of the commands from
> http://www.jsoftware.com/jwiki/Plot/Commands to produce a file or output to
> clipboard in j802qt, jhs or j6. When passed to plot command (have not tried
> pd)
>
> David:
> Some of the more interesting drawings do remind of spirograph in a shakier
> universe
>
> 90 d 15 15 15 190 15 15
>
> other classes don't seem to be possible from the spirograph world
> 90 d 1 1 1 178 1 15
> and small tweaks bring an inbetween world
>
> 90 d 15 15 15 190 15 15 15
>
> Maybe a good name for this is spiroturtles
>
> Brian:
> Adverbs have always had this behavioural subtlety. Its very powerful, but
> also essential to understanding how they will behave within locales. The
> rule of thumb is if your explicit adverb doesn't refer to x or y and it
> returns a verb, that verb is tacit
>
> + 1 : 'u'
> +
>
> + 1 : 'u y'
> + (1 : 'u y')
>
>
> The former "parses away" the adverb. The latter returns an expression that
> will be parsed by the caller, and so any names referred in the adverb
> definition need to exist in caller's locale (likely to crash as its not a
> normally intended pattern). But if you don't refer to y, your adverb can
> refer to names in the locale it is defined in.
>
> There is also an efficiency advantage to parsing to a tacit verb, as the
> resulting expression can be applied at low ranks without any reparsing.
>
>
> ----- Original Message -----
> From: Brian Schott <[email protected]>
> To: Programming forum <[email protected]>
> Cc:
> Sent: Saturday, April 18, 2015 7:39 PM
> Subject: Re: [Jprogramming] an interesting plot toy
>
> Pascal,
>
> I have been following this thread with some interest, but until just now I
> missed your comment that the derivation of the adverb `points` "creates a
> tacit verb:". I have never noticed such before, but I have confirmed that
> the resulting verb is tacit. My question to all is since when did J start
> doing that? I am just wondering how long I have been unaware, but don't
> need an exact answer.
>
> Thanks,
>
>
> On Sat, Apr 18, 2015 at 11:10 AM, 'Pascal Jasmin' via Programming <
> [email protected]> wrote:
>
> > clever stuff thanks,
> >
> > here is an adverb form for the clock precision function. m is the number
> > of points on the clock up to 90 degrees. The input is structured that way
> > so that the requirement that it be a multiple of 4 is removed.
> >
> >
> >
> > points =: 1 : '((4*m)|[+{:@]) ,~ (2&{.)@] + (3 : ''|:(,:y|.])(,-)}:y-|i:
> > y'' m) {~ (4*m)|[+{:@]'
> >
> > creates a tacit verb:
> >
> > 1 points
> > (4 | [ + {:@]) ,~ 2&{.@] + (4 2$0 1 1 0 0 _1 _1 0) {~ 4 | [ + {:@]
> >
> >
> > --
> (B=)
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
--
regards,
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