How can one save a huge amount of data to a .mat file?

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To save a huge amount of data to a .mat file in MATLAB, you can use the save function. Here's an example:

data = rand(10000, 10000); % Create a huge amount of data
save('mydata.mat', 'data'); % Save the data to a .mat file

In this example, we're creating a large matrix of random data with 10,000 rows and 10,000 columns. We're then using the save function to save this data to a .mat file called "mydata.mat". The second argument to save is the name of the variable we want to save, in this case "data". This will create a .mat file that contains the data in the "data" variable, and we can load this data back into MATLAB later using the load function.

Note that if the amount of data you're trying to save is too large to fit into memory, you may need to use a different approach such as saving the data in smaller chunks or using a file format that supports streaming.