strsplit causing issues with several functions

I am working on Matlab 2020b and am hoping to use the ros2node function to communicate with a wireless node. But when trying to use this function i get an error because of strsplit

Caused by:

Error using strsplit

Too many input arguments.

A similar error shows up when i try to open the Add-on Explorer and the explorer doesn't open .

I had previous had this error opening the Add-on explorer once before and following instructions of reseting matlab preferences ( using intrcutions provided here https://www.mathworks.com/matlabcentral/answers/99625-how-do-i-regenerate-my-matlab-preferences) solved the problem. These same steps do not work now.

Please help!

Answer 1

[Jan]

It looks like you have shadowed the builtin function strsplit by a user-defined function, which accepts less inputs.

If you post the complete error message, it would be easier to check, if this assumption is true.

Check this by:

which strsplit -all

What do you get as answer?

To avoid such troubles, do not append folders on the top of the Matlab path, but on the bottom only. Then the user defined strsplit() is shadowed, which can cause bugs also, but it is easier to find them. The solution is to rename the user-defined function.

[raj6]

You are correct. Code I had borrowed from someone else seems to contain a function that is named the same as the builtin function. have removed that function from path and renamed and let the other user know as well.

Thank you for the advice!

Answer 2

[Steven Lord]

Let's make sure you haven't created or downloaded a strsplit.m file that's taking precedence over the strsplit function included in MATLAB. What does this display for you?

which -all strsplit

/MATLAB/toolbox/matlab/strfun/strsplit.m

If it displays something outside of toolbox/matlab/strfun that could be the cause of the problem.

[raj6]

You are correct. Code I had borrowed from someone else seems to contain a function that is named the same as the builtin function. have removed that function from path and renamed and let the other user know as well.

Thank you for the advice!