find out in which row an element is equal to a specific number
조회 수: 43 (최근 30일)
이전 댓글 표시
hi,
I have the following problem:
I have a matrix with 20 columns and over 200'000 rows. somewhere in this matrix there seems to be some strange datas which I would like to delete. If I am looking for the rownumbers where the value is higher than a specific value, lets say I am looking for all the values in the first row that are larger than 1500
If I do this:
data18(:,1)>1500
I get a logical array, but what I am looking for is the exact row number, what do I need to do?
댓글 수: 0
채택된 답변
James Tursa
2013년 5월 1일
편집: James Tursa
2013년 5월 1일
If you are looking for rows where any value is > 1500, then
find(any(data18>1500,2))
Or if you are only interested in rows where the 1st column is > 1500, then
find(data18(:,1)>1500)
댓글 수: 4
James Tursa
2017년 11월 3일
The 2 forces the any( ) function to work on the rows instead of the columns (which is the default).
추가 답변 (3개)
partha sarkar
2019년 12월 11일
how to check whether aparticular value in a array is euqal to a given value
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Loops and Conditional Statements에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!