How to show part of a nested structure as a vector?

Question

Samantha Tomkowich 2019-12-18

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/497154-how-to-show-part-of-a-nested-structure-as-a-vector

回答： Bhaskar R 2019-12-18

I created a nested structureband I am trying to find the abundance of all species in seine 1 as a vector. I know how to access the information

seine1=struct('atlantic_menhaden','502','atlantic_silverside','15','bay_anchovy','0','silver_perch','13','summer_flounder','1');
seine2=struct('atlantic_menhaden','2800','atlantic_silverside','38','bay_anchovy','2','silver_perch','5','summer_flounder','0');
seine3=struct('atlantic_menhaden','3','atlantic_silverside','0','bay_anchovy','1','silver_perch','2','summer_flounder','1');
all_seines=struct('seine_1',seine1,'seine_2',seine2,'seine_3',seine3)
all_seines.seine_1  %data I want to use

however it needs to be in a vector format. How do i display it as such?

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Answer 1

Vladimir Sovkov 2019-12-18

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/497154-how-to-show-part-of-a-nested-structure-as-a-vector#answer_406834

sn='seine_1';
% sn=fieldnames(all_seines);
% sn=sn{1};
nm=fieldnames(all_seines.(sn));
N=numel(nm);
A=zeros(N,1);
for k=1:N
    A(k)=str2double(all_seines.(sn).(nm{k}));
end
disp('-----');
disp(A);