From a matrix how can I randomly select one column combination at a time
2 views (last 30 days)
Show older comments
Suppose I have
A = [ 1 0 0
0 1 1
1 1 0]
I would like to get any column based on value of a random number, and send to another matrix with the other two columns successively.
0 Comments
Answers (1)
Image Analyst
on 13 May 2021
Edited: Image Analyst
on 13 May 2021
This will do it:
A = [ 1 0 0
0 1 1
1 1 0]
[rows, columns] = size(A)
% Get a random column.
randomColumn = randi(columns)
% Get indexes of the other columns.
otherColumns = setdiff(1:columns, randomColumn)
% Take that random column, and tack on the other columns to the right of it.
outputMatrix = A(:, [randomColumn, otherColumns])
For example:
A =
1 0 0
0 1 1
1 1 0
randomColumn =
2
otherColumns =
1 3
outputRowVector =
0 1 0
1 0 1
1 1 0
See Also
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!