Why do I receive error for reshape function?
显示 更早的评论
I am using the following code below, however, I keep getting geting the error message for reshape function. How would the code or reshape function be changed to stop the error?
>> s = 1/sqrt(2);
A = [1 1 1 0 0 0 0 0 0; 0 0 0 0 0 0 1 1 1; 1 0 0 1 0 0 1 0 0; 0 0 1 0 0 1 0 0 1; s s 0 s 0 0 0 0 0; 0 0 0 0 0 s 0 s s; 0 0 0 s 0 0 s s 0; 0 s s 0 0 s 0 0 0];
b = [6; 24; 12; 18; 4.9497; 16.2634; 13.4350; 7.7781];
k = 1:20;
X = kaczmarz(A,b,k);
figure(1)
for i=1:kmax, subplot(4,5,i), imagesc(reshape(X(:,i),N,N)), end
Error using reshape
Number of elements must not change. Use [] as one of the size inputs
to automatically calculate the appropriate size for that dimension.
3 个评论
Chunru
2021-6-7
Check the size of X before figure(1):
size(X)
Check if the first dimension of X is equal to N*N
Scott MacKenzie
2021-6-7
I suspect the issue is that X(:,i) does not have exactly NxN elements.
Ryan
2021-6-7
采纳的回答
The number of elements in X(:,j) is not equal to N*N, thats why you are getting error.
N = 3 ;
X = rand(10) ;
x = reshape(X(:,1),N,N) ; % this will lead to error
See to it that the number of elements should not change. You may use imresize to achieve this.
[m,n] = size(X) ;
X = imresize(X,[N*N,n]) ;
imagesc(reshape(X(:,1),N,N)) ; % this will work
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