Error using cwtfilterb​ank/valida​teInputsMA​TLAB

I am tryng to use cwt function from Wavelet toolbox.

I am using the example provided in the description:

https://ch.mathworks.com/help/wavelet/ref/cwt.html

However, I get the following mistake:

load mtlb;

w = cwt(mtlb);

Error using cwtfilterbank/validateInputsMATLAB

Error: File: strncmpi.m Line: 1 Column: 1

Invalid text character. Check for unsupported symbol, invisible character, or pasting of non-ASCII

characters.

Why does this mistake come?

Answer 1

[Suvansh Arora]

The stack trace mentioned usually comes up, whenever there is a use of special character in a “.m” script.

In order to DEBUG this further, please follow the below mentioned procedure:

• Check if “load mtlb” does not precede with any special character. See the code below, that would cause the trace mentioned.

`load mtlb; 
w = cwt(mtlb); 

• Name of your “.m” script must not match with any predefined MATLAB module, “strncmpi” is a built-in module, make sure you are not making any changes in that.