How to save mat file in Matlab

Question

Med Future 2022-2-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1641410-how-to-save-mat-file-in-matlab

评论： Voss 2022-2-7

采纳的回答： Voss

64qam12.mat

Hi all, i hope you are doing well, i have the dataset file of shape 9920x1

i modify the mat file and want to save each mat files with shape of 1024x1 in folder How can i do that?

and generate 100 mat file from a single mat file

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Answer 1

Voss 2022-2-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1641410-how-to-save-mat-file-in-matlab#answer_887220

在 MATLAB Online 中打开

64qam12.mat

This will generate 10 mat files, 9 of which contain a 1024x1 variable of contiguous samples from your original mat file and 1 of which contains the remaining 704 samples:

fn = '64qam12';
S = load([fn '.mat']);
block = 1024;
N = ceil(numel(S.var5)/block);
for i = 1:N
    var5 = S.var5((i-1)*block+1:min(i*block,end));
    save(sprintf('%s_%d.mat',fn,i),'var5');
end

Alternatively, this wil save 10 mat files, each of which contains a 1024x1 matrix, the last of which is padded with NaNs on the end:

fn = '64qam12';
S = load([fn '.mat']);
block = 1024;
N = ceil(numel(S.var5)/block);
S.var5 = [S.var5; NaN(N*block-numel(S.var5),1)];
for i = 1:N
    var5 = S.var5((i-1)*block+1:i*block);
    save(sprintf('%s_%d.mat',fn,i),'var5');
end