Addons/graphics/graph -works just fine for me in jqt on the Mac, whether
j902, j903 or j9.4.0

JVERSION

Engine: j9.4.0-beta13/j64arm/darwin

Build: commercial/2023-02-23T08:07:39/clang-14-0-0/SLEEF=1

Library: 9.4.21

Qt IDE: 2.0.3/6.2.4(6.2.4)

Platform: Darwin 64

Installer: J904 install

InstallPath: /applications/j904

Contact: www.jsoftware.com


But it is somewhat buried in jwiki as it stands. You "just have to know"
what it is and what it is capable of.


Make its acquaintance via Labs:

Help > Studio… > Labs… > Category: graphics >

Fractals, Visualization & J

- or -

Graph Utilities


I recommend going straight into the first lab listed: *Fractals,
Visualization & J*
to get an idea what addon: graph can really do, and how best to use it.

If you just browse jwiki for "graph" as I did (silly me!) you might only
discover the 2nd lab: Graph Utilities
and run away with the idea it's a poor relation of plot/pd. Or a cut-down
version of GL2 (supported by jqt).

Oh, and buy the book too – I've been recommending it for years:
https://code.jsoftware.com/wiki/Books#Fractals.2C_Visualization_.26_J.2C_4th_ed._.282_Parts.29
…which has up-to-date links
WARNING: don't search lulu.com directly - their search feature is dismal
and you risk buying the 3rd edition not the 4th.

Ian Clark

On Fri, 7 Apr 2023 at 01:08, Raul Miller <rauldmil...@gmail.com> wrote:

> I've been playing with this, and I haven't been able to come up with a
> working translation of that code fragment.
>
> Here's my current best guess, though it still does not work:
>
> load 'graph'
> gdopen''                NB. Create drawing surface
> gdcolor 255 0 0         NB. set the color
> gdpen 2, PS_DASH        NB. pen width 2, dashed line
> gdlines 0 1000  1000 0  NB. draw using current pen
> gdshow''
>
> I suspect that the graph addon needs some work.
>
> --
> Raul
>
> On Thu, Apr 6, 2023 at 11:57 AM Michal Wallace <michal.wall...@gmail.com>
> wrote:
> >
> > https://code.jsoftware.com/wiki/Help/JforC/Graphics
> >
> > ... says you can do this to make an isigraph pop up:
> >
> >    load 'graph'
> >    gopen ''
> >
> >
> > but...
> > a) the verb seems to have been renamed to `gdopen` since this was written
> > and
> > b) no window pops up when you call `gdopen`
> >
> > (tested in jQt for windows, j902 and j9.4...)
> >
> > Do we need to fix the code, or the docs?
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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