Extract fields from structure

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Samy Alkhayat
Samy Alkhayat 2022-8-14
评论： Dyuman Joshi 2022-8-15
Hello,
I have a structure A that includes 2 structures, B and C. I want to extract from structure "C" , to the workspace, specific fields that start with certain set of letter, i.e I want to extract fields that start wih XX_YY.
I did
S=[A.C(:)]; save('param.mat','-struct','S');
But the file takes forever to load to the workspace.
Thanks in Advance!
  3 个评论
显示 1更早的评论
Samy Alkhayat
Samy Alkhayat 2022-8-15
I actually not sure how to extract directly to workspace without saving to a variable and loading it.
Dyuman Joshi
Dyuman Joshi 2022-8-15
It is, as the answers below show

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采纳的回答

Stephen23
Stephen23 2022-8-15
Ran in:
A.C.XX_YY1 = 5;
A.C.XX_YY2 = 10;
A.C.ZZ = 3;
B = A.C;
F = fieldnames(B);
X = startsWith(F,'XX_YY');
B = rmfield(B,F(~X))
B = struct with fields:
XX_YY1: 5 XX_YY2: 10

更多回答（1 个）

Matt J
Matt J 2022-8-14
编辑：Matt J 2022-8-14
Ran in:
S.C.XX_YY1=5;
S.C.XX_YY2=10;
S.C.ZZ=3;
f=fieldnames(S.C);
I=startsWith(f,'XX_YY');
f=string(f(I));
for fI=string(f(I))'
Extraction.(fI)=S.C.(fI);
end
Extraction
Extraction = struct with fields:
XX_YY1: 5 XX_YY2: 10
  1 个评论
Samy Alkhayat
Samy Alkhayat 2022-8-15
@Matt J it works except I get the error below:
The logical indices contain a true value outside of the array bounds.
Any advice?
Thanks in advance!

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