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How can a function find location of itself?

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I want to save a file in the same location as the a function (ie not in the current folder). How can a function find get the location of itself?
(the file should handle being moved around, additionally, it will always be in some PATH)

Accepted Answer

Walter Roberson
Walter Roberson on 13 Jun 2016
together with fileparts() to extract the directory portion, and fullfile() to construct the new file name.

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