matlab ind2sub

ind2sub

[row,col] = ind2sub(sz,ind)
[I1,I2,…,In] = ind2sub(sz,ind)

[row,col] = ind2sub(sz,ind) returns the arrays row and col containing the equivalent row and column subscripts corresponding to the linear indices ind for a matrix of size sz. Here sz is a vector with two elements, where sz(1) specifies the number of rows and sz(2) specifies the number of columns.

[I1,I2,…,In] = ind2sub(sz,ind) returns n arrays I1,I2,…,In containing the equivalent multidimensional subscripts corresponding to the linear indices ind for a multidimensional array of size sz. Here sz is a vector with n elements that specifies the size of each array dimension.

将线性索引转换为三维数组的下标

ind = [3 4 5 6];
sz = [2 2 2];
[I1,I2,I3] = ind2sub(sz,ind)

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