find

Find Non-zero Elements

📝 Syntax

• K = find(M)

• [R, C] = find(M)

• [R, C, V] = find(M)

• K = find(M, N)

• [R, C] = find(M, N)

• [R, C, V] = find(M, N)

• K = find(M, N, D)

• [R, C] = find(M, N, D)

• [R, C, V] = find(M, N, D)

📥 Input argument

• M - a scalar, vector, matrix, or multidimensional array.

• N - positive integer scalar value: number of nonzeros to find.

• D - direction: 'first' (default) or 'last'.

📤 Output argument

• K - indices to nonzero elements (vector).

• R - row subscripts (vector).

• C - column subscripts (vector).

• V - nonzero elements of M (vector).

📄 Description

K = find(M) returns a vector with the linear indices of each nonzero element of M.

💡 Example

M = rand(4, 3, 5);
[R, C, V] = find(M > 0.9)
M(R(1),C(1),V(1))

🔗 See also

strfind.

🕔 History

Version	📄 Description
1.0.0	initial version