What is difference between matlab rms() and File Exchange Signal rms()

I (think I) am using Signal rms from File Exchange. I downloaded this and put it in my path.

Matlab also has an rms function (Matlab rms).

Both are called as y=rms(...).

How does Matlab know which one to use?

The editor window helper shows the syntax for the Matlab version. I put in values for the Signal rms version and do not get an error, and putting in the wrong number of parameters yeilds an error consistent with Signal rms. So I am using the Signal rms version.

Signal rms requires:

y = rms(signal, windowlength, overlap, zeropad)

Matlab function requires:

y = rms(x)

y = rms(x,"all")

y = rms(x,dim)

y = rms(x,vecdim)

y = rms(___,nanflag)

[Stephen23]

Note: by far the simplest and most robust solution to ensuring that you know exactly which function you are calling is to give the function a unique name. Simply rename it to "SigRMS" or similar ... and the entire problem goes away.

Answer 1

[Cris LaPierre]

MATLAB uses the function precedence outlined here: https://www.mathworks.com/help/matlab/matlab_prog/function-precedence-order.html