Please watch the webinar for which this is the code. The first 40 min, as you correctly say, focuses on maximizing the available memory for MATLAB. The latter 25 min focuses on minimizing MATLAB's memory usage, processing a large data set in a few ways. BTW MATLAB's out of memory errors are not directly affected by available RAM.
Okay... the title says: "Handling Large Data Sets Efficiently in MATLAB".
Actually, it just shows information on how to "Handle" the system memory in order to provide more RAM for MATLAB to work with.
Not even one word is spent on an arbitrary "Data Set".
Nevertheless, this guide is useful for the above.
Good work, wrong topic.
Replace the title by something like "Providing MATLAB with more RAM in order not to run out of memory" or something similar.