define as the work directory the location where you downloaded the file. in matlab

You can use the cd command to change the current working directory to the location where you downloaded the file. Here's an example code snippet:

main.m
% Set the current working directory to the location where you downloaded the file
cd('C:\Downloads')

% Now you can load or manipulate the file
load('file.mat')
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Replace 'C:\Downloads' with the actual path to the directory where you downloaded the file.

Alternatively, you can specify the full path to the file in your code, like this:

main.m
load('C:\Downloads\file.mat')
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In this case, you don't need to change the working directory.