how to calculate the distance of a lat lon to the coastline?

조회 수: 6 (최근 30일)
surya
surya 2019년 12월 14일
댓글: Melih Can 2020년 9월 9일
hello, I want to find the distance from the lat lat station to the coastline. following my script, but there was an error that I did not understand, I thank anyone who provided advice and helped me.
lonlat = load ('lonlat.mat');%get lonlat allstasiun
coast = load('coast.dat');
% % Preallocate
coast_indexes = size(lonlat);
distancefromcoast = size(lonlat);
% % Find distance and corresponding coastal point
for i=1:1:numel(lonlat)
[dist, az] = distance(lonlat(i), lonlat(i), coast.lat, coast.long);
[distancefromcoast(i),coast_indexes(i)] = min(dist);
end
  댓글 수: 3
Meg Noah
Meg Noah 2020년 1월 10일
Please share 'lonlat.mat'
Melih Can
Melih Can 2020년 9월 9일
Should be 'coast.mat' also distance('lonlat(i),lonlat(i)'... does'nt look appropriate

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답변 (1개)

David Hill
David Hill 2020년 1월 11일
Technically, you should use spherical trigonometry (great circle path) to determine the shortest distance. The algorithm is not difficult. You could solve my Cody problem: https://www.mathworks.com/matlabcentral/cody/problems/45180

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