How to calculate double integral of a circular area?
조회 수: 6 (최근 30일)
이전 댓글 표시
I only have three matrices, X, Y and A as attached. X and Y are the discrete point position in the Cartesian coordinate, A is the corresponding value of each point. All of those three matrices are 64×180 format (64 radial and 180 azimuthal points within a circular area).
Is there any way to calculated the bulk A value in this circular area?
I can understand the double integral in a rectangular area, as shown in this question (https://ww2.mathworks.cn/matlabcentral/answers/464644-double-integral-of-numerical-data), but it's really out of my knowledge for a circular area.
댓글 수: 0
답변 (1개)
Hiro Yoshino
2020년 1월 7일
You may want to use the indices:
radius = 0.5;
idx = sqrt(X.^2+Y.^2) < radius;
This way, you can extract the elements of A within the radius.
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!