How to delete a variable in a MAT-file, which corresponds to an instance of matlab.io.MatFile

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per isakson
per isakson le 24 Oct 2014
Commenté : Jim Hokanson le 5 Jan 2018
Background
I use an instance of &nbsp matlab.io.MatFile &nbsp to store and manipulate huge variables. (Huge compared to the capacity of my PC.) During the development of my code I create too many useless variables in the mat-file. The size of the mat-file and the number of variables increases.
The mat-file is version v7.3, which is an HDF5-file. With HDF5 there is no easy way to delete a dataset and recover the space. It is possible to "unlink" a variable and copy the HDF5-file to a new one.
Question
How to delete a variable in a MAT-file, which corresponds to an instance of &nbsp matlab.io.MatFile ? &nbsp Is there a better way than copy the variables, which I want to keep, to a new mat-file and delete the old one?

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Walter Roberson
Walter Roberson le 5 Jan 2018

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Stalin Samuel
Stalin Samuel le 24 Oct 2014
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Jim Hokanson
Jim Hokanson le 5 Jan 2018
For reference, as of Jan 2018 the linked file simply loads all of the variables to keep and saves them into a new file.

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