overwrite cell array in a loop

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summyia qamar
summyia qamar 2018-7-31
评论： summyia qamar 2018-7-31
the code is given below; parts(day) are calculated using some data which is let say comes out as 3 4 2 for day 1 2 3. complete code is attached in file.. when the value of parts(day) decreses from previous loop, the cell cannot reassign the new value but overwrite on previous and causes extra cell which creates error in reshaping.
for day=1:3
n = 2;
Psub{parts(day}=[];
for ii=1:(parts(day)*2)/n
Psub{ii}=process_plan((ii-1)*n+1:ii*n,:);
end
P=reshape((cell2mat(Psub)),parts(day)*2,machines);
  2 个评论
Bob Thompson
Bob Thompson 2018-7-31
编辑：Bob Thompson 2018-7-31
I'm a little confused by what you're problem is and would like some more context. Would you mind including more of your code (the whole loop if possible)?
summyia qamar
summyia qamar 2018-7-31
I have provided the complete code..the error is from line 52 to 57

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Stephen23
Stephen23 2018-7-31
编辑：Stephen23 2018-7-31
clear the cell array before you implicitly create it with that allocation:
clear P
P{4}=[];
...
clear P
P{2}=[]
...
Note that this is not an efficient solution. A much better solution would be to explicitly create the cell array of the right size each time, e.g.:
P = cell(1,4);
...
P = cell(1,2);
...
I recommend that you explicitly create the cell array.
  1 个评论
summyia qamar
summyia qamar 2018-7-31
thankyou so much, I was looking for this solution but I was confused how to define cell array. the second solution is best for me.

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