Prev: Sample uniformly from a simplex
Next: "The requested evaluator is not currently defined"
From: amannuc1 on 14 Dec 2008 07:39
In exploring ways to clear variables in all unprotected contexts, I
executed this command:
ClearAll["*`*"]

I now realize that was a bad idea. System variables were affected
also. I use Quit[] instead now.

Did I trash my Mathematica installation? The help function does not
seem to work as well. For example, the search function no longer works
uniformly. If I type "Lists" or "Expressions" in the top level search
window, nothing happens. The help still works at some level, but I
don't see search results for "related pages" anymore. The only search
results I get are results for direct function names. Most hyperlinks
work, but not all. Searching on non-function words does not work. It
just brings me back to the Documentation center main screen. The
hyperlink called "Installed Add-Ons" gives me an error message that
the file I tried to open was not found. I re-installed Mathematica 6.0
the usual way, but that does not seem to help. This is for OS X
10.5.5. I've done this twice. Any advice? Thanks.

By the way, I am trying to learn about init.m. I want to increase the
search path at startup. I placed the one liner below in a file called
init.m in the following directory
/Users/mannucci/Library/Mathematica/Autoload
but the path remains unmodified.

init.m:
$Path = Prepend[$Path, "/Users/mannucci/Documents/Mathematica/Lib"];

How does Mathematica find init.m? (The docs are not helping me here,
for the reasons mentioned above).

-Tony

--
Tony Mannucci
Supervisor, Ionospheric and Atmospheric Remote Sensing Group
Mail-Stop 138-308, Tel > (818) 354-1699
Jet Propulsion Laboratory, Fax > (818) 393-5115
California Institute of Technology, Email >
Tony.Mannucci(a)jpl.nasa.gov
4800 Oak Grove Drive, http://genesis.jpl.nasa.gov
Pasadena, CA 91109

From: Bill Rowe on 15 Dec 2008 07:46
On 12/14/08 at 7:39 AM, Anthony.J.Mannucci(a)jpl.nasa.gov (amannuc1)
wrote:

>In exploring ways to clear variables in all unprotected contexts, I
>executed this command: ClearAll["*`*"]

I assume your goal here was to re-set things to be as they were
when you first started your session without actually quitting
and restarting Mathematica. If so, the package CleanSlate that
can be found at

<http://library.wolfram.com/infocenter/MathSource/4718/>

is very useful for this purpose.

>I now realize that was a bad idea. System variables were affected
>also. I use Quit[] instead now.

>Did I trash my Mathematica installation? The help function does not
>seem to work as well.

I would not expect this to "trash" your installation. If simply
quitting and re-launching doesn't correct the problem, you might
try deleting the following:

~/Library/Mathematica/FrontEnd/6.0 Caches

or if using version 7

~/Library/Mathematica/FrontEnd/7.0 Caches

On occasion, after crashing Mathematica, I found this corrected problems.

>By the way, I am trying to learn about init.m. I want to increase
>the search path at startup. I placed the one liner below in a file
>called init.m in the following directory
>/Users/mannucci/Library/Mathematica/Autoload
>but the path remains unmodified.

>init.m: $Path = Prepend[$Path,
>"/Users/mannucci/Documents/Mathematica/Lib"];

The file that needs to be modified to add to the search path is
found at

~/Library/Mathematica/Kernel/init.m



From: amannuc1 on 16 Dec 2008 02:36
On Dec 15, 4:46 am, Bill Rowe <readn...(a)sbcglobal.net> wrote:
> The file that needs to be modified to add to the search path is
> found at
>
> ~/Library/Mathematica/Kernel/init.m

Yes, this works well. Thanks.

> On 12/14/08 at 7:39 AM, Anthony.J.Mannu...(a)jpl.nasa.gov (amannuc1)
> wrote:
>
> >In exploring ways to clear variables in all unprotected contexts, I
> >executed this command: ClearAll["*`*"]
>
> I assume your goal here was to re-set things to be as they were
> when you first started your session without actually quitting
> and restarting Mathematica. If so, the package CleanSlate that
> can be found at
>
> <http://library.wolfram.com/infocenter/MathSource/4718/>
>
> is very useful for this purpose.
>

>From what I could understand, this package needed context names also.
In other words, it would only clear specific contexts, not all
contexts that I had created. I could check the documentation again.

> >I now realize that was a bad idea. System variables were affected
> >also. I use Quit[] instead now.
> >Did I trash my Mathematica installation? The help function does not
> >seem to work as well.
>
> I would not expect this to "trash" your installation. If simply
> quitting and re-launching doesn't correct the problem, you might
> try deleting the following:
>
> ~/Library/Mathematica/FrontEnd/6.0 Caches
>

This did not seem to work. I am having the same problem with the
Documetation Center (limited search functionality). I note now that
when I start Mathematica, the following message appears in the
Messages window:

During evaluation of In[1]:
Needs::nocont: Context PacletManager`
was not created when Needs was evaluated.

I am not sure where this message is created or when.

Thanks!

-Tony

From: amannuc1 on 16 Dec 2008 02:36
I found the problem. Thanks to Bill Rowe for his previous advice.

For some reason, a bunch of .m files were left in my home directory by
a previous session. These files are (all zero length):

-rw-r--r-- 1 mannucci 502 0 Dec 13 11:05 Global.m
-rw-r--r-- 1 mannucci 502 0 Dec 13 11:05 JLink.m
-rw-r--r-- 1 mannucci 502 0 Dec 13 11:05 PacletManager.m
-rw-r--r-- 1 mannucci 502 0 Dec 13 11:05 ResourceLocator.m
-rw-r--r-- 1 mannucci 502 0 Dec 13 11:05 System.m
-rw-r--r-- 1 mannucci 502 0 Dec 13 11:05 WebServices.m

These were found by Mathematica and messing up the session. Deleting
these and search seems to work fine again!

Thanks again.

-Tony

 | 
Pages: 1
Prev: Sample uniformly from a simplex
Next: "The requested evaluator is not currently defined"