if the cell duplicated put last column in the previous row

Question

Amr Hashem 2015-5-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/216456-if-the-cell-duplicated-put-last-column-in-the-previous-row

评论： Walter Roberson 2015-5-14

i run this code but it gives an error:

j=1;
rowsize=length(defs);
data1=cell([rowsize,C2]);              % create array with size [R,C]
   for j=1:length(defs)     % loop over Mdr of defib
       querymdr=data2{j,1};          % save MDR numbers
    y=alldata{:,1};
       idx=  find(y==querymdr);   % find in alldata MDR equals def
   record=[alldata{idx(1),:}];   % copy the 1st search result
     for k=2:length(idx)% over all MDR number of text
         record = [record,(alldata(idx(k),6))];
     end
   data1(j,:)=record;        % put combined record into result table
     end

what is the wrong thing ?

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Walter Roberson 2015-5-14

What is class(y) and size(y) when the problem occurs?

Also your code does not account for the possibility of there being no match.

Amr Hashem 2015-5-14

在 MATLAB Online 中打开

i adjust the code to be :

   for j=1:length(defs)     
     querymdr=data2(:,1);          
   y=alldata(:,1);
     idx=  find(y==querymdr);   % find matched cells
    record= alldata(idx,:);

it gives me an error in idx= find(y==querymdr); % y has 37*1 cell and querymdr has 5*1 cell

they are matched columns, but y has 37 cell and querymdr has 5 only. i want to find the matched cells.

what is wrong?

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Answer 1

James Tursa 2015-5-14

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/216456-if-the-cell-duplicated-put-last-column-in-the-previous-row#answer_179126

在 MATLAB Online 中打开

Maybe idx is empty (i.e., the find didn't result in a match). Do this to verify:

dbstop if error

Then run your code. When the error occurs, the execution will pause and you can examine variable sizes to confirm the problem and why it occurred.

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Amr Hashem 2015-5-14

在 MATLAB Online 中打开

i adjust the code to be :

   for j=1:length(defs)     
     querymdr=data2(:,1);          
   y=alldata(:,1);
     idx=  find(y==querymdr);   % find matched cells
    record= alldata(idx,:);

it gives me an error in idx= find(y==querymdr); % y has 37*1 cell and querymdr has 5*1 cell

what is wrong?