How do I using logical values to write 'NAN' to non-existing data?
조회 수: 6 (최근 30일)
이전 댓글 표시
I have a data set with non equal lengths
A = B =
H m lat H m lat
0 2 -90 0 1 -90
0 2 -89 0 1 -89
0 2 -88 0 1 -87
0 2 -87 0 1 -86
0 2 -86
I want to query using the lat of A to find missing lat in B and write 'NAN' in that row
so that the sizes become the same like this; I want to use this idea for a large data set
B=
0 2 -90
0 2 -89
NAN NAN NAN
0 2 -87
0 2 -86
댓글 수: 0
채택된 답변
Rik
2022년 11월 8일
You can use ismember:
A=[ones(5,2).*[0 2] (-90:-86).'];
B=[ones(4,2).*[0 2] [-90;-89;-87;-86]];
new_B=nan(size(A));
[~,rows]=ismember(B(:,3),A(:,3));
new_B(rows,:)=B;
new_B
댓글 수: 4
Rik
2022년 11월 8일
You have posted code, but you didn't explain how the output is different from what you want.
Note that this code will overwrite any values that occur multiple times in later elements of A.
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Logical에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!