selecting random numbers
4 views (last 30 days)
Show older comments
i have a matrix 10x10 i want to select random matrix of 5x5 but the selected matrix must be in same order as the original matrix,if i choose 20x20 the random matrix must be 10x10
please help
2 Comments
Wayne King
on 7 Jan 2012
Can you elaborate on what you mean by "...must be in the same order" In your example all you're telling us is that the row and column dimensions must be 1/2 the original matrix.
Accepted Answer
Image Analyst
on 7 Jan 2012
Just use rand() to randomly pick a row and column in the range 1 to half the width and extract it subMatrix = fullMatrix(row1:row2, col1:col2); I'm sure you can figure out how to get row1, etc. using rand. (I'm leaving some of the work to you in case this is a homework problem, which it sounds like it is.)
0 Comments
More Answers (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!