Question

Say I have a .mat file with several instances of the same structure, each in a different variable name.

I want to process each instance found in a file (which I find using whos('-file' ...). I was hoping that load would let me specify the destination name for a variable so that I didn’t have to worry about collisions (and so that I didn’t have to write self-modifying code a la eval).

The brute force way to do this appears to be creating a helper function that, using variables with names that hopefully don’t conflict with the .mat contents, does something like:

1. Does a whos on the file to get the contained names.
2. Iteratively load each contained structure.
3. Uses eval to assign the loaded structure into, say, a cell array (where one column of the array contains the .mat file’s structure names and a corresponding column with the actual contents of each structure from the .mat file).

Is there no more elegant way to accomplish the same thing?

Answer 1

Of course you can! Just use load with an output argument.

x = 1;
save foo;

ls = load('foo.mat');
ls.x