How to access different FIELD in structure using CELLFUN

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balandong
balandong 2017-11-28
回答： balandong 2017-11-30
Dear all, the objective was to access multiple fields (3 fields) located in multiple cell container. CELLFUN was used to make the coding more compact. The data from the 3 fields from each cell were then combine in a matrix. The code below demonstrated clearly what I tried to achieve. However, as can be seen below, the code is very lengthy. I wonder if this code can be further simplified by utilizing the CELLFUN, or any suitable FUNCTION. I really appreciate for any tips.
The end result should that like EachComb CELL
load('help_strcCellFun.mat');
vec_SBN_table=cellfun(@(S) S.SBN, result, 'uni',true);
nSizeComb=size(vec_SBN_table,2); % Equal to s.TotalCombntn
C_x=1;
for f_x=1:nSizeComb
xx_TPR{C_x}= vec_SBN_table(f_x).TPR ;
xx_TNR{C_x}= vec_SBN_table(f_x).TNR ;
xx_ACC{C_x}= vec_SBN_table(f_x).ACC ;
C_x=C_x+1;
end
nSizeCPT_ROW=size(s.CptPair,1);
yy_SeqNo=repmat((1:nSizeCPT_ROW)',1,s.TotalCombntn);
yy_TPR=reshape(horzcat(xx_TPR{:}),nSizeCPT_ROW,[]);
yy_TNR=reshape(horzcat(xx_TNR{:}),nSizeCPT_ROW,[]);
yy_ACC=reshape(horzcat(xx_ACC{:}),nSizeCPT_ROW,[]);
EachComb=cell(nSizeComb,1);
for f_x=1:nSizeComb
comb(:,1)=yy_SeqNo(:,f_x); % Sequence No
comb(:,2)=yy_TPR(:,f_x);
comb(:,3)=yy_TNR(:,f_x);
comb(:,4)=yy_ACC(:,f_x);
EachComb{f_x,1}= comb;
end
  2 个评论
per isakson
per isakson 2017-11-30
I don't think the mat-file matches the code. For example, it doesn't contain S.SBN
balandong
balandong 2017-11-30
Hi Per, The capital S is the Variable (I am dont know the actual name for it) similar to x as in the following line.
Cpositives = cellfun(@(x) x(x>0), C, 'UniformOutput',false);

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回答（1 个）

balandong
balandong 2017-11-30
The following line were much more shorter than the originally proposed.
load('help_strcCellFun.mat');
vec_SBN_TPR=cellfun(@(S) S.SBN.TPR, result, 'uni',false);
vec_SBN_TNR=cellfun(@(S) S.SBN.TNR, result, 'uni',false);
vec_SBN_ACC=cellfun(@(S) S.SBN.ACC, result, 'uni',false);
endExtractedData = arrayfun(@(k) [vec_SBN_TPR{k}; vec_SBN_TNR{k};vec_SBN_ACC{k}]',1:s.TotalCombntn,'un',0);

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