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What is the for loop that I can use to do the following then save the results as .mat file?

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What is the for loop that I can use to do the following then save the results as .mat file?
I have 30 iterations and in each iteration I want to save the following:
Image with size 120*120 *1* 6000
Labels with size: 1*6000
E= 1*6000
and I will repeat the 30 iterations for 12 experiments (12 run).
Which means in each run will get the above files 30 times
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Accepted Answer

Dyuman Joshi
Dyuman Joshi on 6 Nov 2023
Preallocate arrays according to the final size and the data type and modify the arrays iteratively.
Use indexing to obtain the corresponding data.
  8 Comments
M
M on 6 Nov 2023
@Dyuman Joshi Thanks the 2nd solution worked but when I tried to save the results I got the following:
Warning: Variable 'Images' was not saved. For variables larger than 2GB use
MAT-file version 7.3 or later.
What can I do in this case?
Dyuman Joshi
Dyuman Joshi on 6 Nov 2023
Edited: Dyuman Joshi on 6 Nov 2023
@M - Does your PC have a 64 bit processor?
Also, check the setting of version of MAT-Files in your MATLAB - https://in.mathworks.com/help/matlab/import_export/mat-file-versions.html
Make sure the selected version is MAT-File Version 7.3

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