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L = length(X) returns the length of the largest array dimension in X. For vectors, the length is simply the number of elements. For arrays with more dimensions, the length is max(size(X)). The length of an empty array is zero.
To count number of rows in a matrix: length(ans) gives the maximum dimension of a matrix. For a 2 dimensional matrix, it is the larger of the number of rows and columns.
18 kwi 2014 · As per the documentation, if you call the length command on a matrix Y, then the result is the max(size(Y)) i.e. the greatest dimension. So if Y is a 4x4 matrix, then length(Y) is 4; if Y is a 4x8 matrix then length(Y) is 8; and if Y is a 12x3 matrix, then length(Y) is 12.
21 lut 2022 · In MATLAB, length() gives the length of an array, and size() gives the size of a matrix.
6 mar 2013 · This is a matlab tutorial on length built in function of matlab. length function is used to calculate the length of an array or a matrix. SUBSCRIBE TO BE UPD...
length. The length function returns the maximum of the column or row dimensions. It is useful for finding the dimension of a vector which may be either an n × 1 column vector, or an 1 × n row vector. For a matrix A, it is equivalent to max(size(A)). >> v = [1 2 3 4 5] v = 1 2 3 4 5 >> length( v ) ans = 5
A common mistake MATLAB coders have, is using the length function for matrices (as opposed to vectors, for which it is intended). The length function, as mentioned in its documentation , " returns the length of the largest array dimension " of the input.
