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Can't run script in namespace directory

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Ratchet
Ratchet 2024-6-12
回答： Steven Lord 2024-6-12
Hello,
why is it that one apparently can't run scripts that are placed in namespace directories, i.e. direcotries that have their name start with a + ?
The reason I have a script in a namespace is that it containes some examples of how to use the code in the namespace. (It also seems like it's not possible to add a namespace directory to the path.)
  1 个评论
Image Analyst
Image Analyst 2024-6-12
What is the "current folder" in MATLAB, and is that the folder where your script lives? If not, is the + folder on your path? Type
>> path
to find out. How did you try to add it to the path? Via the Set Path button or the addpath function?

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回答（1 个）

Steven Lord
Steven Lord 2024-6-12
Ran in:
You can run a script in a namespace. You need to use the name of the namespace as part of the command, just like you would when you call a function. Let's make a script in a namespace:
cd(tempdir)
mkdir +mynamespace
cd +mynamespace
fid = fopen('myscript2127936.m', 'wt');
fprintf(fid, "disp('hello')");
fclose(fid);
cd ..
Now run it.
mynamespace.myscript2127936
hello
You are correct, you cannot add a namespace folder to the path. If you try MATLAB issues a warning.
addpath(fullfile(pwd, '+mynamespace'))
Warning: Namespace directories not allowed in MATLAB path: /tmp/+mynamespace
But you could import the namespace then run the script without the namespace name. Normally I don't like calling import with a wildcard (it could break your code if someone else adds something to the namespace without your knowledge that will take precedence over something you call) but given that I created the namespace specifically for this example it's okay in this case.
import mynamespace.*
myscript2127936
hello

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