changing values in a certain column of a matrix
31 views (last 30 days)
Show older comments
I have a large matrix and in the fifth column I want to replace every value of 990 with 30.375, how could I do this easily? I found many similar questions but not exactly the same one and I tried to adapt the solutions to my situation but it hasn't worked yet..
0 Comments
Accepted Answer
Cedric
on 4 May 2014
Edited: Cedric
on 4 May 2014
First, you build a logical index of all values equal to 990 in column 5:
lId = A(:,5) == 990 ;
Then you use it to index relevant elements of A (in column 5), that you set to 30.375:
A(lId,5) = 30.375 ;
Let me know if you need more information.
5 Comments
Cedric
on 4 May 2014
Thank you Image Analyst! Yes, I could have warned, but I always thought that I would be able to come back "within a few days", and I lost track of time!
Dogiparthi Santhosh Gupta
on 4 Apr 2021
Is the same logic applicable on a table with single column.
My problem is 'I have to replace the values of 2,3,4 in a single column of a table to 1' I tried with your logic but getting an error. Kindly suggest the perfect logic by anyone.
More Answers (1)
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!