RESHAPE command in MATLAB

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mona
mona 2013-4-23
I am working on this piece of code which is basically k-means clustering and I'm really stuck at a point where cell needs to be reshaped into matrix:
vec_dist(i)=dist(s(i),reshape(cell2mat(codebook),L,length(codebook)));
with error: Error using reshape To RESHAPE the number of elements must not change.
Any help would be highly appreciated.

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回答（1 个）

Matt J
Matt J 2013-4-23
Do you understand why the following example produces an error? The error your code gives is due to the same thing.
>> reshape(rand(2,3),5,1)
Error using reshape
To RESHAPE the number of elements must not change.
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mona
mona 2013-4-23
Alright, that would require some debugging and entering values accordingly. One question, do you think the code is okay in terms of converting double to cell since L is of type double. I have had an eye on it but put it down anyway, what do you think?
Matt J
Matt J 2013-4-23
Did you understand the example I posted? The error you're getting pertains to the sizes and values of the arguments, not their data type.
By entering the values of L and length(codebook), RESHAPE expects that the array you're trying to reshape has L*length(codebook) elements in it. That is apparently not the number of elements in the array cell2mat(codebook). If this surprises you, use DBSTOP as I suggested to see how many elements there actually are.

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