MATLAB: Load multiple files in right order

Question

Hello,

I'm loading multiple mat-files in workspace, the names of files are:

Schweben_Meg_2_2-01_SNR_-030_PLL.mat
Schweben_Meg_2_2-01_SNR_-015_PLL.mat
Schweben_Meg_2_2-01_SNR_000_PLL.mat
Schweben_Meg_2_2-01_SNR_015_PLL.mat
Schweben_Meg_2_2-01_SNR_030_PLL.mat

the answers will be writen to one result files. The problem – MATLAB loads this files in "wrong" order.

First it takes:

Schweben_Meg_2_2-01_SNR_-015_PLL.mat

than

Schweben_Meg_2_2-01_SNR_-030_PLL.mat

than

Schweben_Meg_2_2-01_SNR_000_PLL.mat

…..

I want to get a loading order:

Schweben_Meg_2_2-01_SNR_-030_PLL.mat first

than

Schweben_Meg_2_2-01_SNR_-015_PLL.mat

than

Schweben_Meg_2_2-01_SNR_000_PLL.mat

it is possible to read a data in "right" order without rename of all the files? (I have about 1000x of thoose files)

Thank you!

Answer 1

Download my FEX submission natsortfiles:

https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort

and use the regular expression '-?\d{3}' (or similar), e.g.:

D = 'path to the folder where the files are saved';
S = dir(fullfile(D,'Schweben*PLL.mat'));
C = natsortfiles({S.name},'-?\d{3}');