{"id":6980,"date":"2022-09-06T05:32:43","date_gmt":"2022-09-06T00:02:43","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-locate-coordinate-from-angle-from-n-nautical-miles\/"},"modified":"2022-09-06T05:32:43","modified_gmt":"2022-09-06T00:02:43","slug":"solved-locate-coordinate-from-angle-from-n-nautical-miles","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-locate-coordinate-from-angle-from-n-nautical-miles\/","title":{"rendered":"[Solved] Locate coordinate from angle from n nautical miles"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-48589890\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"48589890\" data-parentid=\"48546839\" data-score=\"0\" data-position-on-page=\"3\" data-highest-scored=\"0\" data-question-has-accepted-highest-score=\"0\" itemprop=\"suggestedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<pre><code>\/\/Example with mutliple coordinates before creating an arc. AREA DEFINED AS 133830N1450807E TO 132836N1444449E TO 133043N1443814E TO 133515N1443710E THEN CLOCKWISE ON A 15.3 NM ARC CENTERED ON 133416N1445256E TO THE POINT OF ORIGIN\n                    \/\/Abbreviation\n                    \/\/    a\n                    \/\/    b\n                    \/\/    m(midangle)   (cx,cy,ax,ay,bx,by)\n                    \/\/    x(lat)\n                    \/\/    y(long)\n                    \/\/Xc=latitude provided in text for center point\n                    \/\/Yc=longitude provided in text for center point\n\n                    \/\/point is the last point\n                    var startPointStr = generateCircleLine[generateCircleLine.Length - 1].Split(' ');\n\n                    var startPoint = new TfrXY { LngX = Convert.ToDouble(startPointStr[0]), LatY = Convert.ToDouble(startPointStr[1]) };\n                    \/\/point before the last point\n\n                    var stopPointStr = generateCircleLine[generateCircleLine.Length - 2].Split(' ');\n\n                    var stopPoint = new TfrXY { LngX = Convert.ToDouble(stopPointStr[0]), LatY = Convert.ToDouble(stopPointStr[1]) };\n                    var centerPoint = new TfrXY { LngX = Convert.ToDouble(centerPointStr[0]), LatY = Convert.ToDouble(centerPointStr[1]) };\n\n                    var a = Math.Atan2(stopPoint.LatY- centerPoint.LatY, stopPoint.LngX-centerPoint.LngX);\n                    var b = Math.Atan2(startPoint.LatY-centerPoint.LatY, startPoint.LngX-centerPoint.LngX);\n\n                    var m = MidAngle(centerPoint.LngX, centerPoint.LatY, startPoint.LngX, startPoint.LatY, stopPoint.LngX, stopPoint.LatY);\n\n                    var d = Math.Sqrt(      \n                        Math.Pow(Convert.ToDouble(centerPointStr[0]) - startPoint.LngX, 2) +\n                        Math.Pow(Convert.ToDouble(centerPointStr[1]) - startPoint.LatY, 2)   );\n\n                    var ym = (centerPoint.LatY) +( d * Math.Sin(m));\n                    var xm = (centerPoint.LngX) + (d * Math.Cos(m));\n\n\n\n\n\n\n\n\nThe latidude and longitude would be  ym  and xml\n\nYou will also need to use this function.\n\n\n\n        \/\/\/ &lt;summary&gt;\n        \/\/\/ Find mid angle\n        \/\/\/ &lt;\/summary&gt;\n        \/\/\/ &lt;param name=\"cx\"&gt;center point longitude&lt;\/param&gt;\n        \/\/\/ &lt;param name=\"cy\"&gt;center point latitude&lt;\/param&gt;\n        \/\/\/ &lt;param name=\"ax\"&gt;Starting point longitude &lt;\/param&gt;\n        \/\/\/ &lt;param name=\"ay\"&gt;Starting point latitude&lt;\/param&gt;\n        \/\/\/ &lt;param name=\"bx\"&gt;Stopping point longitude&lt;\/param&gt;\n        \/\/\/ &lt;param name=\"by\"&gt;Stopping point latitude&lt;\/param&gt;\n        \/\/\/ &lt;returns&gt;&lt;\/returns&gt;\n        public static double MidAngle(double cx, double cy, double ax, double ay, double bx, double by)\n        {\n\n            var a = Math.Atan2(ay - cy, ax - cx);\n            var b = Math.Atan2(by - cy, bx - cy);\n\n            \/\/Fixing infinite loop issue\n            if ((ax == cx) &amp;&amp; (ay &gt; cy))\n                a = Math.PI \/ 2.0;\n            else if ((ax == cx) &amp;&amp; (ay &lt;= cy))\n                a = -Math.PI \/ 2.0;\n            else\n                a = Math.Atan2(ay - cy, ax - cx);\n\n            if ((bx == cx) &amp;&amp; (by &gt; cy))\n                b = Math.PI \/ 2.0;\n            else if ((bx == cx) &amp;&amp; (by &lt;= cy))\n                b = -Math.PI \/ 2.0;\n            else\n                b = Math.Atan2(by - cy, bx - cx);\n\n\n\n            var delta = a - b;\n            while (delta &lt; 0)\n            {\n                delta += 2 * Math.PI;\n            }\n            return a - (delta \/ 2);\n        }\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Locate coordinate from angle from n nautical miles <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] \/\/Example with mutliple coordinates before creating an arc. AREA DEFINED AS 133830N1450807E TO 132836N1444449E TO 133043N1443814E TO 133515N1443710E THEN CLOCKWISE ON A 15.3 NM ARC CENTERED ON 133416N1445256E TO THE POINT OF ORIGIN \/\/Abbreviation \/\/ a \/\/ b \/\/ m(midangle) (cx,cy,ax,ay,bx,by) \/\/ x(lat) \/\/ y(long) \/\/Xc=latitude provided in text for center point \/\/Yc=longitude provided &#8230; <a title=\"[Solved] Locate coordinate from angle from n nautical miles\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-locate-coordinate-from-angle-from-n-nautical-miles\/\" aria-label=\"More on [Solved] Locate coordinate from angle from n nautical miles\">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":[324,1947,739,357,500],"class_list":["post-6980","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-geography","tag-geometry","tag-math","tag-sql-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Locate coordinate from angle from n nautical miles - 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-locate-coordinate-from-angle-from-n-nautical-miles\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Locate coordinate from angle from n nautical miles - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] \/\/Example with mutliple coordinates before creating an arc. AREA DEFINED AS 133830N1450807E TO 132836N1444449E TO 133043N1443814E TO 133515N1443710E THEN CLOCKWISE ON A 15.3 NM ARC CENTERED ON 133416N1445256E TO THE POINT OF ORIGIN \/\/Abbreviation \/\/ a \/\/ b \/\/ m(midangle) (cx,cy,ax,ay,bx,by) \/\/ x(lat) \/\/ y(long) \/\/Xc=latitude provided in text for center point \/\/Yc=longitude provided ... 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AREA DEFINED AS 133830N1450807E TO 132836N1444449E TO 133043N1443814E TO 133515N1443710E THEN CLOCKWISE ON A 15.3 NM ARC CENTERED ON 133416N1445256E TO THE POINT OF ORIGIN \/\/Abbreviation \/\/ a \/\/ b \/\/ m(midangle) (cx,cy,ax,ay,bx,by) \/\/ x(lat) \/\/ y(long) \/\/Xc=latitude provided in text for center point \/\/Yc=longitude provided ... 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