How to rename field in a struct?

Can someone please help me, i am trying to name the fields where there is currently 1,2,3 in the rows on the left.

Answer 1

[Walter Roberson]

In current releases of MATLAB it is not possible to get numeric field names, not even if you load a file written by third-party software that tries to set the fields that way.

If you have third-party software creating those files, then you can try https://www.mathworks.com/matlabcentral/fileexchange/42274-loadfixnames-loads-a-mat-file-fixing-invalid-names

[Lucy Davidson]

Ah okay, Thank you!