MathGroup Archive 2010

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Re: Transition to Wolfram Workbench

  • To: mathgroup at
  • Subject: [mg107818] [mg107818] Re: [mg107775] Re: Transition to Wolfram Workbench
  • From: John Fultz <jfultz at>
  • Date: Sat, 27 Feb 2010 03:14:17 -0500 (EST)
  • Reply-to: jfultz at

Was the file still open in Mathematica?  Mathematica can lock open files (so
they won't get changed by another program and leave things in an uncertain 
state).  It's entirely possible that Workbench wants a sole lock on files and 
won't play nicely with a file that's locked by another app.  Regardless of 
whether that's the case or not, though, I wouldn't advise having the file open 
in both Workbench and Mathematica simultaneously.

If that's not the issue, it's difficult for me to say.  Workbench isn't my area, 
and the package is a standard package in every regard (on top of being a simple, 
plain text file).  I'd suggest submitting it to tech support as a possible bug 
in Workbench if you continue to have problems.


John Fultz
jfultz at
User Interface Group
Wolfram Research, Inc.

On Thu, 25 Feb 2010 17:37:09 -0500 (EST), Hannes Kessler wrote:
> What you said works for saving a Mathematica notebook as a package
> under a different name and re-opening it in Mathematica. I'll probably
> look now more on .m files in Mathematica during package development
> and debugging. But when I re-opened the created .m file in the
> Workbench I got an error "Could not open the editor. An unexpected
> exception was thrown." followed by
> at org.eclipse.swt.widgets.Display.runDeferredEvents(
> 3880)
> at org.eclipse.swt.widgets.Display.readAndDispatch(
> at org.eclipse.ui.internal.Workbench.runEventLoop(
> 2405)
> at org.eclipse.ui.internal.Workbench.runUI(
> at org.eclipse.ui.internal.Workbench.access$4(
> at org.eclipse.ui.internal.Workbench$
> at
> org.eclipse.core.databinding.observable.Realm.runWithDefault(
> 332)
> at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(
> 493)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(
> 149)
> at
> java:
> 113)
> at
> 194)
> at
> 110)
> at
> 79)
> at
> 368)
> at
> 179)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> 39)
> at
> .java:
> 25)
> at java.lang.reflect.Method.invoke(
> at org.eclipse.equinox.launcher.Main.invokeFramework(
> at org.eclipse.equinox.launcher.Main.basicRun(
> at
> I don't know what to do with it.
> Best regards,
> Hannes Kessler
> On 25 Feb., 07:53, John Fultz <jfu... at> wrote:
>> If take your notebook and you do...
>> * File->Save As...
>> * Choose "Mathematica Package" under the file type
>> * Save as any .m file...but not using the same name as your .nb file
>> (because
>> your .nb file is already writing a companion package, and so will keep
>> destroying and recreating the like-named package every time you save
>> your
>> notebook).
>> You'll now end up with a package file which has some interesting
>> properties.
>> * If you open it in Mathematica, it looks much like a notebook, even
>> preserving
>> the cell structure and most of the properties of the notebook.
>> * If you open it in Workbench (or any text editor), it will be
>> completely
>> readable, and all of that work you put into commenting your code in
>> Text cells
>> will *still* be there in clearly readable comments.
>> * If you decide to make changes in Workbench (or any text editor), it
>> will be
>> pretty clear how to do so without destroying any structure that would
>> allow you
>> to reopen the package in the Mathematica front end and continue to see
>> the same
>> structure.
>> When we designed the package editor in Mathematica (i.e., the mode
>> you're put in
>> when you open a .m file), one of the chief goals was to have it stream
>> out to a
>> file which is completely readable in any text editor, and which can be
>> co-developed using any combination of Mathematica, Workbench, and text
>> editor.
>> By following this procedure, you'll be making absolutely no irreversible
>> commitment to Workbench, and this will allow you to transition as
>> quickly or
>> slowly (or not at all) as you wish.
>> Incidentally, something else which you might wish to know...Mathematica
>> has an
>> alternate evaluatable cell style known as "Code" (Alt+8 or Cmd+8).
>> Code is like
>> Input, but with the following differences...
>> * Much less automatic formatting (e.g., auto-indent, auto-line-wrap)
>> * InitializationCell->True is set by default
>> * Differing background color so you can easily distinguish from Input
>> cells
>> This can be a much easier and more visible way of tagging package code
>> than
>> using the Initialization Cell menu item, and it's the style which is
>> used by the
>> package editor for package code by default.
>> Sincerely,
>> John Fultz
>> jfu... at
>> User Interface Group
>> Wolfram Research, Inc.
>> On Wed, 24 Feb 2010 06:18:42 -0500 (EST), Hannes Kessler wrote:
>>> Hello,
>>> could you give some recommendations for a smooth transition to the
>>> workbench for packages developed in a standard mathematica notebook
>>> environment?  Starting a completely new project in the workbench is
>>> one thing, but at least as important is the question how to continue
>>> to work on existing packages created previously by other means. Up to
>>> now I wrote  code in input cells of a mathematica notebook, added
>>> explanations in text cells, marked the input cells with package code
>>> as initialization cells to create the .m file automatically upon
>>> saving the notebook. I never looked into the .m files themselves.
>>> Should one / could one import the notebook (or the .m file) to a
>>> workbench project, or copy it to a work space directory, or work
>>> directly on the files in the user base directory, or what else ... ?
>>> Are there tutorials deeling with this problem?
>>> Best regards,
>>> Hannes Kessler

  • Prev by Date: Re: Re: Transition to Wolfram Workbench
  • Next by Date: Re: Square root of a square
  • Previous by thread: Re: Re: Transition to Wolfram Workbench
  • Next by thread: Re: Transition to Wolfram Workbench