MATLAB Answers

rand in matrix?

9 views (last 30 days)
Is it possible to use rand in a matrix and include a range? I know it is possible with a vector, but I wanted to see if it was possible in a matrix. Thank you!

  0 Comments

Sign in to comment.

Accepted Answer

KALYAN ACHARJYA
KALYAN ACHARJYA on 15 Oct 2019
Edited: KALYAN ACHARJYA on 15 Oct 2019
result=-min_value + (max_value+min_value)*rand(m,n);
Example:
%Let say range -0.6 to 0.8 and matrix size 5x4
result=-0.6 + (0.8+0.6)*rand(5,4)
Result:
result =
0.1382 -0.0979 0.2944 0.0736
-0.4558 0.2558 -0.1577 -0.5351
0.0320 0.5944 -0.4910 0.1707
-0.1773 0.5954 -0.5836 -0.1201
0.2625 0.1651 0.2922 -0.5717

  2 Comments

Walter Roberson
Walter Roberson on 15 Oct 2019
I would typically write
result = min_value + (max_value - min_value) * rand(m,n);
In my formula, greater rand() value corresponds to greater result. In the formula KAYLAN posted, greater rand() value corresponds to lower result. Mathematically they are the same, but I think the form I presented is easier to understand.
KALYAN ACHARJYA
KALYAN ACHARJYA on 15 Oct 2019
Exactly sir, Thanks

Sign in to comment.

More Answers (0)

Products

Community Treasure Hunt

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

Start Hunting!