What is the difference between knnsearch and rangesearch?
조회 수: 3 (최근 30일)
이전 댓글 표시
I need to find the number of data points within a circle of a 10 km radius. The data would be the latitude and longitude coordinates of my location point. Which function would be the best approach?
댓글 수: 0
채택된 답변
KSSV
2017년 5월 15일
difference is:
knnsearch: For a given positive integer K, knnsearch finds K points in X that are nearest each Y point.
rangesearch: for a given positive real value r, rangesearch finds all the X points that are within a distance r of each Y point.
So in your case if you want all the points (lat,lon) which are in a radius 10 kms, you have to use rangesearch
댓글 수: 0
추가 답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!