function of readtable in matlab

can anyone please explain me the following command?

A = readtable(fullfile(pathname,filename));

is this command used when i want to give a different path than matlab path?

Answer 1

[Rik]

You are misunderstanding what the Matlab path is. The Matlab path is where Matlab will look for functions. As a bonus you will also find normal files that way. You should not rely on that, especially not when writing a GUI.

The fullfile function can be used to create a complete file name including the path. That way you unambiguously refer to a specific file and the current folder and/or the Matlab path are irrelevant.