How can I extract exact values from a single column of a matrix?
5 views (last 30 days)
Show older comments
The matrix in question has x, y, z coordinates in its first 3 columns respectively. I tried using a for-loop to go through the matrix and if it came across a row where x=0.025 then it would copy the entire row to a second matrix in it's 'f' row then f=f+1. The second matrix was premade with zeros and is the correct size, however it keeps resulting in no change to it.
0 Comments
Accepted Answer
Star Strider
on 5 Jul 2021
Try something like this —
M = randi(50, 50, 3)/1000 % Original Matrix
Lv = M(:,1) == 0.025 % Logical Vector 'Mask'
nrtrue = nnz(Lv) % Number Of Occurrences (Optional)
N = M(Lv,:) % New Matrix
Make appropriate changes to get the result you want.
.
0 Comments
More Answers (0)
See Also
Categories
Find more on Matrix Indexing 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!