Thread Subject: m-file shadows itself? Confused about error

Hello all,

Beginning yesterday I have been receiving an error when I run two scripts (using F5 from the editor) called randomregression.m and checkSummerDDfcn.m. Both are in the same folder, which is on the search path. There are no files in my file system with conflicting names. They ran without error for several weeks previously.

The error for the first file reads:
"MATLAB cannot run this file because C:\...Refit DD function\randomregression.m shadows it in the working directory. To run this file you must change the MATLAB current directory."

The first two lines of each script are:
clear all; close all;
cd('C:\...Refit DD function\');

Commenting out the cd line does not help.
Deleting the branch of the path containing this directory and resetting it I was able to run the second function once without the error, but then it reappeared. Repeating this action was not effective.

I moved one of the files up one folder level, ran it once without error, but the error reappeared the second time I ran it from this directory. I put it back in the original folder, ran it once without error, but then the error reappeared. Same thing.

Any idea what's going on here?

"Jeff Evans" <evansj18.noSpamPlease@msu.edu> wrote in message
news:h2afbf$cu8$1@fred.mathworks.com...
> Hello all,
>
> Beginning yesterday I have been receiving an error when I run two scripts
> (using F5 from the editor) called randomregression.m and
> checkSummerDDfcn.m. Both are in the same folder, which is on the search
> path. There are no files in my file system with conflicting names. They
> ran without error for several weeks previously.
>
> The error for the first file reads:
> "MATLAB cannot run this file because C:\...Refit DD
> function\randomregression.m shadows it in the working directory. To run
> this file you must change the MATLAB current directory."
>
> The first two lines of each script are:
> clear all; close all;
> cd('C:\...Refit DD function\');
>
> Commenting out the cd line does not help.
> Deleting the branch of the path containing this directory and resetting it
> I was able to run the second function once without the error, but then it
> reappeared. Repeating this action was not effective.
>
> I moved one of the files up one folder level, ran it once without error,
> but the error reappeared the second time I ran it from this directory. I
> put it back in the original folder, ran it once without error, but then
> the error reappeared. Same thing.
>
> Any idea what's going on here?

Do you add the directory containing the scripts to the path using ADDPATH
inside one of the scripts? If so, try commenting out that line or those
lines in your scripts and see if that resolves the problem.

--
Steve Lord
slord@mathworks.com

Thanks Steve,

No, I added it via "Set Path" in the File menu.

Jeff

Addendum:

I now see that the error is not specific to that one directory. It appears when I run scripts from other directories as well.

Jeff

"Jeff Evans" <evansj18.noSpamPlease@msu.edu> wrote in message <h2ag82$ca7$1@fred.mathworks.com>...
> Addendum:
>
> I now see that the error is not specific to that one directory. It appears when I run scripts from other directories as well.
>
> Jeff

I have similar problems. Everything was fine for a year or so. Now nearly every script repeatedly requires me to acknowledge this warning and click on "change Directory".

I haven't been able to figure out how to fix it. I'm using a Mac and it has only been since I upgraded to Snow Leopard - that may just coincidence, of course.

Warwick

I was able to solve this by closing and reopening the .m files.

"Warwick" wrote in message <hea1pu$pg3$1@fred.mathworks.com>...
> "Jeff Evans" <evansj18.noSpamPlease@msu.edu> wrote in message <h2ag82$ca7$1@fred.mathworks.com>...
> > Addendum:
> >
> > I now see that the error is not specific to that one directory. It appears when I run scripts from other directories as well.
> >
> > Jeff
>
> I have similar problems. Everything was fine for a year or so. Now nearly every script repeatedly requires me to acknowledge this warning and click on "change Directory".
>
> I haven't been able to figure out how to fix it. I'm using a Mac and it has only been since I upgraded to Snow Leopard - that may just coincidence, of course.
>
> Warwick

Same solution as Mark:

SOLUTION

1. Close and re-open the .m file.

Very annoying error, especially because every time you run you're changing the folder to the same folder, in effect doing nothing. Thanks