How do I use information in mat file?

Question

Linjun He 2018-11-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/431383-how-do-i-use-information-in-mat-file

评论： Linjun He 2018-12-19

Here's the information in each .mat file.(metric, PF, Population)

What I want to do is to use information in .mat file as inputs (PF->PF, Population->PopObj), and store the output (Score->metric) for the following function.

Extension: I have many .mat files like this.How do I handle this in a batch?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Stephen23 2018-11-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/431383-how-do-i-use-information-in-mat-file#answer_348386

编辑：Stephen23 2018-11-22

D = 'path to folder where those files are saved';
S = dir(fullfile(D,'*.mat'));
N = natsortfiles({S.name}); % download from FEX
C = cell(1,numel(N));
for k = 1:numel(N)
     T = load(fullfile(D,N{k}));
     C{k} = NHV(T.Population,T.PF);
end

This imports all .mat files in the given folder, runs the function NHV on their contents, and stores the function outputs in the cell array C. To get the right file order you can download the function natsortfiles here:

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

3 个评论
显示 1更早的评论隐藏 1更早的评论

Stephen23 2018-11-22

Simpler:

parfor k = 1:10
    F = sprintf('IDMOEAD/IDMOEAD_DSDTLZ1_M3_%d.mat',k);
    S = load(F);
    S.metric = NHV(S.Population.objs,S.PF);
    save(F,'-struct','S');
end