how to write values ​​to a vector and matrix by coordinates?

1 view (last 30 days)
Hello! With the 'find' command, I found the coordinates of all elements greater than 1, now I need to write them to the matrix and vector, how can I do this?
A=vector 1x1000
x=vector 1x1000
y=vector 1x1000
B=matrix 28x1000
idx=find(A>1);
idx=vector coordinates 1x25 [102 502 ...]
and now I need to get
x=vector 1x25
y=vector 1x25
B=matrix 28x25

Accepted Answer

Stephen23
Stephen23 on 31 Jan 2020
Edited: Stephen23 on 31 Jan 2020
You don't need find, it is simpler and more efficient to use logical indexing:
idx = A>1;
x_new = x(idx);
y_new = y(idx);
B_new = B(:,idx);
  1 Comment
Lev Mihailov
Lev Mihailov on 31 Jan 2020
The logical indices contain a true value outside of the array bounds.
Error in RawERT20 (line 618)
y_new = y(idx);
Here is an error

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!