I wrote > and worked in jqt 9.4 when I last tried it. But beware: what may not work is the addon: graphics/graph when you try using it standalone, which IIRC is used by the FVJ lab.
There was a conversation about that recently. See: [Jprogramming] what is (or was) 'graph'? https://www.jsoftware.com/pipermail/programming/2023-April/062378.html I recommend reading the whole thread. On Mon, 22 May 2023 at 23:47, Ian Clark <[email protected]> wrote: > Nils wrote: > > Is the code incompatible with J9.4 or am I doing something wrong? > > This book was published in 2016. I think it's fairer to say that the code > can't be guaranteed to be compatible with j9.4 because FVJ is not part of > the J package. > > However there is a lab: Fractals, Visualization and J -which *is* part of > the J package, and worked in jqt 9.4 when I last tried it. > jqt > Help > Studio > Labs… > Category: Graphics > This may give you a clue as to what needs modifying in the printed book. > > Ian Clark > > On Mon, 22 May 2023 at 21:02, Nils Reuße <[email protected]> wrote: > >> Hi all, >> >> I bought Part 1 of Cliff Reiters book "Fractals, Visualization and J, >> Fourth edition“ and am trying out the introduction examples. >> >> It first tells me to load an add-on, dwin.ijs [1], and then to create a >> window, which works: >> >> load '~addons/graphics/fvj4/dwin.ijs' >> _1 _1 1 1 dwin 'hello' >> >> Now, some data is created in p1: >> >> ]p1=: |:2 1 o./ 1r4p1*i.5 >> 1 0 >> 0.707107 0.707107 >> 6.12323e_17 1 >> _0.707107 0.707107 >> _1 1.22465e_16 >> >> And finally, the data is supposed to be drawn with ‚dpoly‘, which fails: >> >> 0 255 0 dpoly p1 >> >> |psel : command failed: psel >> : wd >> | (LF,~wd ::(''"_)'qer') (13!:8)3 >> >> >> The book states that the examples were tested with J8.04, I’m on >> J9.4.2/j64arm/darwin. There is an official repository containing the code >> for the book [2], but it might be out of date anyways. >> >> Is the code incompatible with J9.4 or am I doing something wrong? >> >> - Nils >> >> >> [1] https://github.com/jsoftware/graphics_fvj4/blob/master/dwin.ijs >> [2] https://github.com/jsoftware/graphics_fvj4 >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
