Why does the function 'str2double' run incorrectly

Using the official example for the function 'str2double', an error is actually reported.

Examples are as follows:

Actual operation result:

[Stephen23]

Perhaps there are some invalid characters present in the strings. This often happens when users copy-paste examples from HTML documents (e.g. webpages) and inadvertently copy newlines or non-breaking spaces or something similar. Or some "smart" character replacement is provided by your OS: those decimal points certainly look strange (but that might just the font you are using).

So, check the character codes yourself. Or save the variable STR in a MAT file and upload it here by clicking the paperclip button, and we can show you how to check the character codes. We cannot run screenshots, we need your data.

Also show us the complete output of this command:

which str2double -all

[Dyuman Joshi]

Can you copy and paste the whole error?

What is the output when you run the following line of code in your MATLAB -

which str2double -all 

Answer 1

[John Smith]

I just found out what caused the error. I used a third-party package some time ago, and when I unpath the package, the problem disappears.

Thank you for your help.