Scilab Home page | Wiki | Bug tracker | Forge | Mailing list archives | ATOMS | File exchange
Please login or create an account
Change language to: Français - Português do Brasil - 日本語 -

Please note that the recommended version of Scilab is 5.5.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Matlab to Scilab Conversion Tips > Matlab-Scilab equivalents > O > ones (Matlab function)

ones (Matlab function)

Create an array of all ones

Matlab/Scilab equivalent

Matlab Scilab

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]

Comments


Add a comment:
Please login to comment this page.

<< O O otherwise (Matlab function) >>

Scilab Enterprises
Copyright (c) 2011-2014 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Wed Oct 05 12:10:04 CEST 2011