Problem using the matlab function randsample

I ask randsample to return a random samples from a 1 x 78000 vector with second argument being 50

example:

randsample(vector,50)

It throws an error message reading:

Error using randi

Too many input arguments.

Error in randsample line 153

x(randi(n,1,k-sumx)) = 1; sample w/replacement

I've tried the matlab example too, and it returns the same error message.

Any suggestions?

[Adam]

Works fine for me with a 1 x 78000 vector of random values. Are you using your offline help or online help? And are you using Matlab R2019b? If not you should always refer to your offline help, even if you first do an online search to find a help page. I have no idea if randsample has changed in recent versions though since it has been in the software since before 2006.

Answer 1

[Stephen23]

MATLAB is trying to access the wrong randi function.

This might occur if you created your own randi function, or a third-party toolbox has a function with this name.

You can check this easily:

which randi -all

The solution is rename that function, or remove it from the MATLAB Search Path:

https://www.mathworks.com/help/matlab/matlab_env/what-is-the-matlab-search-path.html

[Knut Andre Skaug]

There was another randi in a third-party toolbox.

Now it works, thank you!