Saving a structure array, not fields of it

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Snoopy
Snoopy 2023-3-16
评论： Snoopy 2023-3-16
I have a structure array called s1 in the Workspace. I want to save it as it is so that when I load it, I want to see just s1 in the Workspace, not what is in s1. That is, if I use
save('s1.mat','-struct','s1');
MATLAB saves the content of s1 to s1.mat and when I load s1.mat, the content gets loaded to the Workspace. But I do not want this. I want just s1 to appear in the Workspace.
  2 个评论
Stephen23
Stephen23 2023-3-16
编辑：Stephen23 2023-3-16
Although you could simply skip the -struct option, the robust approach is to SAVE using -struct exactly as you do now and then LOAD into an output variable:
save('s1.mat','-struct','s1');
s1 = load('s1.mat')
This is more robust than making variables pop into the workspace:
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval#answer_236127

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Les Beckham
Les Beckham 2023-3-16
编辑：Les Beckham 2023-3-16
Ran in:
s1 = struct('a', 1, 'b', 2')
s1 = struct with fields:
a: 1 b: 2
save('s1.mat', 's1') % don't use the '-struct' option
clearvars
whos
load('s1.mat')
whos
Name Size Bytes Class Attributes s1 1x1 352 struct
Another option:
s1 = struct('a', 1, 'b', 2')
s1 = struct with fields:
a: 1 b: 2
save('s1.mat', '-struct', 's1')
s2 = load('s1.mat')
s2 = struct with fields:
a: 1 b: 2
whos
Name Size Bytes Class Attributes s1 1x1 352 struct s2 1x1 352 struct
isequal(s1, s2)
ans = logical
1

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