what is matrix3d?
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Sandhiya Prakash
il 15 Mar 2017
Commentato: Walter Roberson
il 15 Mar 2017
my code is neighbors = matrix3d(i-1:i+1, j-1:j+1, k-1:k+1);
It gives error like,
Undefined function or variable 'matrix3d'.
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KSSV
il 15 Mar 2017
matrix3D is the variable 3D matrix you have. You have not defined it.
matrix3d = rand(10,10,10) ;
% say i = 1, j = 1
i = 2 ; j=3, k = 2
neighbors = matrix3d(i-1:i+1, j-1:j+1, k-1:k+1)
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Walter Roberson
il 15 Mar 2017
Right. This appears to refer back to https://www.mathworks.com/matlabcentral/answers/310452-how-can-i-find-26-neighbors-of-point-with-coordinates-of-i-j-k#answer_241820 where matrix3d was simply the name of the variable that Image Analyst used to represent the your 3D data set.
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