In an assignment A(I) = B, the number of elements in B and I must be the same error.

Hello, I am trying to make a script to use in some analysises but I have this "In an assignment A(I) = B, the number of elements in B and I must be the same" error. I think it is a common error. My codes are shown below. I have 3 data sets and it worked it 2 of them but the 3rd one giving that error to me. Error is in the line "N(j)=find(M~=0)". When I try to run the code, I=6042 logical, K=[31;32;33;34;35] , M=1095 logical, N=[109,250,486,744,750,1004], i=9 and j=4. I attached my data as .mat file. I have no idea why this code is not working. I really need help.

Good day

for i=1:numel(Full_Result.Nodes_Names)
     I=strcmp(Full_Result.Nodes_Names{i, 1},Network.Nodes);
     Full_Result.Nodes_NEdges(i)=sum(I);    
     %Listedeki Hangi metabolitlerle eşlesiyor
     K=find(I~=0);
     Full_Result.ESC{i,1}=Network.Edges(K',1);
     for j=1:numel(K)
          M=strcmp(Network.Edges{K(j),1},Pvalues.Edges);
          N(j)=find(M~=0);
     end
     %Calculate the aggregated Z-score for the metabolite
     Full_Result.Nodes_ZScores(i)=sum(Pvalues.Zscores(N))/sqrt(numel(N));
     Full_Result.Nodes_meanZ(i)=mean(Pvalues.Zscores(N));
     Full_Result.Nodes_stdZ(i)=std(Pvalues.Zscores(N));
end

Answer 1

[Azzi Abdelmalek]

load error_matrixes
for i=1:numel(Full_Result.Nodes_Names)
   I=strcmp(Full_Result.Nodes_Names{i, 1},Network.Nodes);
   Full_Result.Nodes_NEdges(i)=sum(I);    
   %Listedeki Hangi metabolitlerle eşlesiyor
   K=find(I~=0);
   Full_Result.ESC{i,1}=Network.Edges(K',1);
   N=cell(1);
   for j=1:numel(K)
        M=strcmp(Network.Edges{K(j),1},Pvalues.Edges);
        N{j}=find(M~=0);
   end
   %Calculate the aggregated Z-score for the metabolite
   Full_Result.Nodes_ZScores(i)=sum(Pvalues.Zscores(N{j}))/sqrt(numel(N));
   Full_Result.Nodes_meanZ(i)=mean(Pvalues.Zscores(N{j}));
   Full_Result.Nodes_stdZ(i)=std(Pvalues.Zscores(N{j}));
end

[Hamza Karakurt]

Thank you for your answer, this line works now. I will try to integrate this to my whole script. Thank you again, Have a good day

[Hamza Karakurt]

Hello again, I just want to find out what is the main reason of this error. File format is the same with my other analysises that worked. What kind of problems in the input file can cause that error?

[Azzi Abdelmalek]

If find(M~=0) gives just one value you can write N(j)=find(M~=0) but if the result have different sizes, for example find(M~=0) gives [1 3]; then [4 5 7], what is the meaning of?

N(1)=[1 3]
N(2)=[4 5 7]

[Hamza Karakurt]

The main problem for me is that those codes worked for 2 data sets but didn't work for a data set that exact have same format. What could be the difference?