{"id":6127,"date":"2022-09-01T13:46:32","date_gmt":"2022-09-01T08:16:32","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-find-distance-between-2-lat-and-lon-point-i-have-used-the-formula-but-answer-is-not-what-you-expect\/"},"modified":"2022-09-01T13:46:32","modified_gmt":"2022-09-01T08:16:32","slug":"solved-find-distance-between-2-lat-and-lon-point-i-have-used-the-formula-but-answer-is-not-what-you-expect","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-find-distance-between-2-lat-and-lon-point-i-have-used-the-formula-but-answer-is-not-what-you-expect\/","title":{"rendered":"[Solved] Find distance between 2 lat and lon point. I have used the formula but answer is not what you expect"},"content":{"rendered":"

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Well, you forgot to convert to radians :<\/p>\n

 public double distance(double x, double y, double x2, double y2) {\n        \/\/ r is earth\u2019s radius (mean radius = 6,371km)\n        double r = 6371e3;\n        double toMile = 0.000621371;\n        double latDiff = (x2 - x)*(Math.PI)\/180;\n        double lonDiff = (y2 - y)*(Math.PI)\/180;;\n\n        \/\/ a is the square of half the chord length between the points\n        double a = (Math.sin(latDiff\/2) * Math.sin(latDiff\/2)) + (Math.cos(x) * Math.cos(x2) * Math.sin(lonDiff\/2) * Math.sin(lonDiff\/2));\n\n        \/\/ c is the angular distance in radians\n        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));\n\n        \/\/ d is the distance between to points\n        double d = r * c * toMile;\n\n        return d;\n    }\n<\/code><\/pre>\n
Have a look here : https:\/\/www.movable-type.co.uk\/scripts\/latlong.html<\/a><\/p>\n<\/p><\/div>\n
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solved Find distance between 2 lat and lon point. I have used the formula but answer is not what you expect <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Well, you forgot to convert to radians : public double distance(double x, double y, double x2, double y2) { \/\/ r is earth\u2019s radius (mean radius = 6,371km) double r = 6371e3; double toMile = 0.000621371; double latDiff = (x2 – x)*(Math.PI)\/180; double lonDiff = (y2 – y)*(Math.PI)\/180;; \/\/ a is the square of … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[323],"class_list":["post-6127","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java"],"yoast_head":"\n[Solved] Find distance between 2 lat and lon point. I have used the formula but answer is not what you expect - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-find-distance-between-2-lat-and-lon-point-i-have-used-the-formula-but-answer-is-not-what-you-expect\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Find distance between 2 lat and lon point. 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