{"id":15,"date":"2018-01-21T15:54:21","date_gmt":"2018-01-21T07:54:21","guid":{"rendered":"http:\/\/www.anthonylee.cn\/myblog\/?p=15"},"modified":"2018-03-08T16:12:49","modified_gmt":"2018-03-08T08:12:49","slug":"%e5%9c%b0%e5%9b%be%e7%bb%8f%e7%ba%ac%e5%ba%a6%e5%92%8c%e8%b7%9d%e7%a6%bb%e7%9a%84%e8%ae%a1%e7%ae%97%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/www.anthonylee.cn\/myblog\/?p=15","title":{"rendered":"\u5730\u56fe\u7ecf\u7eac\u5ea6\u548c\u8ddd\u79bb\u7684\u8ba1\u7b97\u95ee\u9898"},"content":{"rendered":"<p>\u6700\u8fd1\u8981\u505a\u4e9b\u5730\u56fe\u76f8\u5173\u7684\u4e8b\u60c5\uff0c\u6709\u5982\u4e0b\u9700\u6c42\uff1a<\/p>\n<p>\u5df2\u77e5\u4e00\u7ecf\u7eac\u5ea6\uff0c\u8ddd\u79bba\uff0c\u6c42\u540c\u7eac\u5ea6\u4e0a\u8ddd\u79bba\u5bf9\u5e94\u7684\u7ecf\u7eac\u5ea6\uff0c\u540c\u7ecf\u5ea6\u4e0a\u8ddd\u79bba\u4e0a\u5bf9\u5e94\u7684\u7ecf\u7eac\u5ea6\u3002\u8bf4\u767d\u4e86\u5c31\u662f\u8ba1\u7b97\u7eac\u5ea6\u95f4\u7684\u8ddd\u79bb\u548c\u7ecf\u5ea6\u95f4\u7684\u8ddd\u79bb\u3002<\/p>\n<p>\u7f51\u4e0a\u641c\u7d22\u5230\u7684\u7b97\u6cd5\uff0c\u5982\u4e0b<\/p>\n<pre><code>public class Map2 {\r\n    private final double PI = 3.14159265358979323; \/\/\u5706\u5468\u7387\r\n    private final double R = 6371229;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u5730\u7403\u7684\u534a\u5f84\r\n    public double getDistance(double longt1, double lat1, double longt2, double lat2){\r\n    double x,y, distance;\r\n    x=(longt2-longt1)*PI*R*Math.cos( ((lat1+lat2)\/2)*PI\/180)\/180;\r\n    y=(lat2-lat1)*PI*R\/180;\r\n    distance=Math.hypot(x,y);\r\n    return distance;\r\n}\r\n\r\npublic double getLongt(double longt1, double lat1, double distance){\r\n    double a = (180*distance)\/(PI*R*Math.cos(lat1*PI\/180));\r\n    return a;\r\n}\r\n\r\npublic double getLat(double longt1, double lat1, double distance){\r\n    double a = (180*distance)\/(PI*R*Math.cos(lat1*PI\/180));\r\n    return a;\r\n}\r\n}\r\n<\/code><\/pre>\n<p>\u6d4b\u8bd5\u4e2d\u53d1\u73b0\u7eac\u5ea6\u7684\u8ba1\u7b97\u6709\u504f\u5dee\u3002\u591a\u6b21\u53d6\u70b9\u6d4b\u8bd5\u53d1\u73b0\uff0c\u7ef4\u5ea6\u5728\u8d64\u9053\u5904\u7684\u8ba1\u7b97\u5f88\u51c6\u786e\uff0c\u4f46\u662f\u7ef4\u5ea6\u8d8a\u5927\uff0c\u8bef\u5dee\u8d8a\u5927\u3002\u5728\u4e2d\u56fd\u8303\u56f4\u5185\u53ef\u4ee5\u8fbe\u52300.1~0.5\u500d\u7684\u8bef\u5dee\u3002\u7ecf\u8fc7\u51e0\u4e2a\u53d6\u6837\u8ba1\u7b97\uff0c\u5728\u7eac\u5ea6\u7684\u8ba1\u7b97\u4e0a\u589e\u52a0\u4e86\u4e00\u4e2a\u7ea0\u6b63\u8ba1\u7b97\u3002\u7ea0\u6b63\u540e\u867d\u7136\u5e76\u4e0d\u662f\u5b8c\u5168\u51c6\u786e\uff0c\u4f46\u662f\u8bef\u5dee\u4f1a\u63a7\u5236\u57280.1\u4ee5\u5185\u3002\u5982\u4e0b<\/p>\n<pre><code>public double getLat(double longt1, double lat1, double distance){\r\ndouble a = (180*distance)\/(PI*R*Math.cos(lat1*PI\/180))\/(1+lat1*lat1*0.5\/(50*50));\r\nreturn a;\r\n}\r\n<\/code><\/pre>\n<p>\u5982\u679c\u6709\u5176\u5b83\u66f4\u51c6\u786e\u7684\u7b97\u6cd5\uff0c\u6b22\u8fce\u63d0\u4f9b\uff1a\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u8981\u505a\u4e9b\u5730\u56fe\u76f8\u5173\u7684\u4e8b\u60c5\uff0c\u6709\u5982\u4e0b\u9700\u6c42\uff1a \u5df2\u77e5\u4e00\u7ecf\u7eac\u5ea6\uff0c\u8ddd\u79bba\uff0c\u6c42\u540c\u7eac\u5ea6\u4e0a\u8ddd\u79bba\u5bf9\u5e94\u7684\u7ecf\u7eac\u5ea6\uff0c\u540c\u7ecf\u5ea6\u4e0a&hellip; <a href=\"http:\/\/www.anthonylee.cn\/myblog\/?p=15\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">\u5730\u56fe\u7ecf\u7eac\u5ea6\u548c\u8ddd\u79bb\u7684\u8ba1\u7b97\u95ee\u9898<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=\/wp\/v2\/posts\/15"}],"collection":[{"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15"}],"version-history":[{"count":1,"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=\/wp\/v2\/posts\/15\/revisions"}],"predecessor-version":[{"id":16,"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=\/wp\/v2\/posts\/15\/revisions\/16"}],"wp:attachment":[{"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.anthonylee.cn\/myblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}