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A minimalist alternative to WolframLanguageForJupyter

POSTED BY: Nicola Cattabiani
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If you use Mathematica mainly for graphics, Jupyter is not for you. A Jupyter interface is great for remote Kernels and Markdown/LaTeX, things that Mathematica does not support that well.

Regarding the black page, is it a problem of safari ? If the out.pdf is properly exported in the JWLout folder but safari does not open it, maybe safari is not well suited to work with Jupyter. As I mention in the description, JWLS is not much more than a couple of fifo on top of a bash_kernel.
POSTED BY: Nicola Cattabiani

Dear murray, try the show function. E.g. Plot3D[Sin[x y],{x,-Pi,Pi},{y,-Pi,Pi}] // show It will return the address of the exported output; if you click it, a new browser tab will open. If your browser does not open the exported graphics, browse into the JWLSout folder in your notebook home folder ; that's a temporary folder with out.pdf of out.png in it. You can keep the out.pdf tab open and refresh it everytime you call again show because it will be overwritten.
POSTED BY: Nicola Cattabiani

That does not work: clicking the link opens a totally black page in Safari. I guess this needs some more work!

In any case, if it worked this does defeat some of the purpose of a Jupyter front end to the Wolfram Engine, namely, to have all output in the same (Jupyter) notebook as the input, and it is contrary to the expected behavior in Mathematica since many versions, where the output from a Plot, Plot3D, etc. is in effect the graphical display and the graphical display is not a side-effect. (That behavior was one of the great advances in the Mathematica Front End, where one no longer had to use the DisplayFunction option before combining several graphics in a single output.)
POSTED BY: Murray Eisenberg

I installed (under macOS). When I run JWLS.sh, which starts jupyter and allows me to open a new jupyter notebook in my browser and then try to evaluate something simple like 1+1, I get error:

sed: 1: "0~1 a\": invalid command code ~

What's wrong? (I did check the path to wolframscript and inserted the full path for Names.wl.txt in kernel.py.
POSTED BY: Murray Eisenberg

Hi Murray, thanks for your feedback. That is MacOS sed complaining about the use of ~ . A solution is to install gnu-sed: brew install gnu-sed and then replace "sed" with "gsed" at line 164 of kernel.py .
POSTED BY: Nicola Cattabiani
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Posted 6 years ago

Using gsed from MacPorts (not Home Brew) fixed that problem, so that I can now get output from 1+1.

However, the output from Plot3D[Sin[x y],{x,-Pi,Pi},{y,-Pi,Pi}] is simply, literally - Graphics3D -.

How do I get to see the display of the graphical output I expected &mdash: the same kind of display I would see in an .nb with the Mathematica Front End, or that I see if instead of JWLS I use WolframLanguageForJupyter?
POSTED BY: Updating Name

enter image description here - Congratulations! This post is now featured in our Staff Pick column as distinguished by a badge on your profile of a Featured Contributor and these will help to promote your work! We copied your .md doc file into your post. Posts in Staff Picks should have detailed presentation, - if you could edit and add anything to the current post (for instance, examples of usage) -- that would be great. Thank you, keep it coming!
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