MATLAB Answers

Bruno Luong
0

path of a mfile not on search path

Asked by Bruno Luong
on 30 Sep 2019
Latest activity Commented on by Bruno Luong
on 9 Oct 2019
When an mfile is not on the search path or current path and when user types the name, MATLAB find it and issues a suggestion
>> foo
'foo' is not found in the current folder or on the MATLAB path, but exists in:
E:\matlab\test
Change the MATLAB current folder or add its folder to the MATLAB path.
Is there anyway to retreive the folder 'E:\matlab\test' programmatically?

  2 Comments

Rik
on 9 Oct 2019
I haven't tested this, but if I recall correctly the only folders that are searched are the folders in the drop down menu containing previous current working directory. There may be a way to retrieve that directory list and generate this suggestion yourself. You will probably need some Yair Altman level tricks.
" There may be a way to retrieve that directory list..:"
Stored in prefdir, that shouldn't be too hard.

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2 Answers

Answer by Rik
on 9 Oct 2019
 Accepted Answer

As suggested in a comment here you can use the diary function to capture output to the command window.

  3 Comments

It doesn't work
function bar
try
foo() % function foo.m NOT in search path
catch
diary('diarytmp.txt');
evalin('base','foo()'); % invoke foo in base workspace
diary('off');
end
end
Then I call
bar()
diarytmp.txt is empty.
EDIT:
dairytmp.txt is flushed with good information (path), when I type
diary off
on command window. Use evalin('base','diary off'); within bar doesn't flush the diary file !
This is weird and too odd and too much contorsion for me to adopt the solution.
Still Rik suggestion of using DIARY answers my question. Better solution is still welcome.
Rik
on 9 Oct 2019
But you do see the text? (I'm on mobile so I can't currently check myself)
Yes I see the eror message with the path, but I cannot use it since some one has to type
diary off on command window.
(My purpose is to retrieve this path and suggest in the diaglog box to user to confirm if he/she wants add the path to run FOO)

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Answer by Jyotsna Talluri on 9 Oct 2019

You can get the folders using 'addpath' function

  1 Comment

My question is how to retreive the PATH name in the fix suggestion provided by MATLAB programatically.
I try try/catch lasterror, lasterr, etc... nothing seems to work. This error message seems to appear only when the mfile is invoked from the base workspace.

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