How to assign values to 100 by 2 matrix?

12 views (last 30 days)
I have a matrix (2,3); how could I initialize a 100 by 2 matrix with the first column all=2 and second column all=3.
Thank you!

Accepted Answer

madhan ravi
madhan ravi on 15 May 2019
Edited: madhan ravi on 15 May 2019
By the looks of the question probably you want:
% if you want first columns with 2 and the other as 3 then
ones(100,2).*[2,3] % since 2016b
bsxfun(@times,ones(100,2),[2,3]) % prior 2016b
By basic indexing [if you want to feed in the 2 by 3 matrix to a 100 by 2 matrix] then:https://in.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html :
a=rand(2,3); % example
[m,n]=size(a);
b=zeros(100,2);
b(1:n,:)=a'
  1 Comment
Robin Li
Robin Li on 15 May 2019
yea. I was asking for if the matrix is (2 3). Thank you!

Sign in to comment.

More Answers (2)

Raj
Raj on 15 May 2019
Edited: Raj on 15 May 2019
A=[2 3]
A1=[A(1)*ones(100,1) A(2)*ones(100,1)]

Murugan C
Murugan C on 15 May 2019
x=ones(100,2);
x(1:end,1) =2;
x(1:end,2) =3;
Try the above code.
Thanks in advance!!!

Categories

Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!