How can I select a random element in a row of matrix?

11 views (last 30 days)
Hello
I want to select a a random element in a row and then I want to know the column of this element
Could you Help me?
Thanks

Accepted Answer

Image Analyst
Image Analyst on 27 May 2014
Try this:
yourMatrix = magic(9) % Sample data
randomColumnNumber = randi(size(yourMatrix, 2), 1)
row = 3; % Whatever
% Get the value of the matrix at this location.
randomValueInRow = yourMatrix(row, randomColumnNumber)

More Answers (1)

rifat
rifat on 27 May 2014
Assuming the data is in 'row'
col=1+floor(rand()*length(row)) % column number of the randomly selected element
element=row(col) % randomly selected element
  2 Comments
Walter Roberson
Walter Roberson on 29 Nov 2015
Ji-hwan Hwang, I do not understand what you mean by "I want to appear in one of two drainage Heat 6-8" ?
If you want to select randomly from column 6 to 8, then
col = randi([6 8]);
element = row(col);

Sign in to comment.

Categories

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

Tags

Community Treasure Hunt

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

Start Hunting!