ones (Matlab function)

Matlab/Scilab equivalent

Matlab	Scilab
ones ones(n) ones(sz1, .., szN) ones(Sizes) ones(.., typename) ones(.., 'like', p) % No equivalent	ones() ones(n, n) ones(sz1, .., szN) repmat(1, Sizes) ones(.., typename) // No equivalent ones(A) // only size(A) is considered

Particular cases

Note that in Matlab, A can contain complex values (in these cases, only real part of A is taken in account), what Scilab function do not tolerate.

// Scilab version
B=ones(A)

Most differences stem from the use of ones in conjunction with size. In Scilab you do not need to use size:

% Matlab version
A = [1 2 ; 3 4];
B = ones(size(A))
B  = [ 1. 1. ; 1. 1.]

// Scilab version
A = [1 2 ; 3 4];
B = ones(A)
B  =[ 1 1 ; 1 1]

As a result, if A is a scalar, then Matlab will return a A*A matrix of ones but in Scilab you get a 1 (just because a scalar is a 1*1 matrix), so use ones(A,A) to get the same matrix B. If A is a vector, Scilab and Matlab give the same B. Finally, if A is a matrix, in Scilab, B will be a matrix having the same size as A whereas in Matlab, you get an error message.

Examples

Matlab	Scilab
B = ones(2) B = [1,1;1,1] B = ones(2,2) B = [1,1;1,1] B = ones([3,3]) B = [1,1,1;1,1,1;1,1,1]	B = ones(2) B = 1 B = ones(2,2) B = [1,1;1,1] B = ones([3,3]) B = [1,1]