MATLAB Answers

Comparing the two structure

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I need to compare the two structure and remove the matching fieldname. Is it possible?
How can i do it?
Thanks a lot

  2 Comments

B.k Sumedha
B.k Sumedha on 18 Jun 2015
Yes.It can be done.

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Accepted Answer

B.k Sumedha
B.k Sumedha on 18 Jun 2015
Edited: B.k Sumedha on 18 Jun 2015
U can use the isequal command to compare between structs.
tf = isequaln(A,B)
And if the result is 1,u can remove those fieldname like for example:
function B = column_removal(A,n)
A = [1 2 3; 4 5 6];
n=2;
A(:,n)=[];
B = A;
end
In this example u will be removing the 2nd coulmn.

  3 Comments

Guillaume
Guillaume on 18 Jun 2015
If the question is indeed about structures, then this answer is way off the mark! See Azzi's answer for the correct solution.
B.k Sumedha
B.k Sumedha on 18 Jun 2015
Cant isequlan function compare two structures??
Guillaume
Guillaume on 18 Jun 2015
Yes, it can, and it will tell you whether the two structures have the exact same field names and field values.
It won't give you the list of fields that have the same name.
Your example of column removal has nothing to do with structures.
Note: I'm not belittling your answer as the OP is obviously happy with it since he accepted it. But if somebody searches the forum for a way to remove matching field names, I'd rather they went to the correct answer to that problem.

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More Answers (1)

Azzi Abdelmalek
Azzi Abdelmalek on 18 Jun 2015
a=struct('field1',1,'field2',2,'field3',5)
b=struct('field1',3,'field3',4,'field4',6)
f1=fieldnames(a)
f2=fieldnames(b)
f=intersect(f1,f2)
a=rmfield(a,f)
b=rmfield(b,f)