{"id":2326,"date":"2016-08-25T09:49:14","date_gmt":"2016-08-25T00:49:14","guid":{"rendered":"http:\/\/www23.atpages.jp\/~inoni\/?p=2326"},"modified":"2017-10-20T17:31:28","modified_gmt":"2017-10-20T08:31:28","slug":"java-excel%e3%81%aeslope%e9%96%a2%e6%95%b0%e3%82%92java%e5%8c%96%e3%81%97%e3%81%a6%e3%81%bf%e3%82%8b","status":"publish","type":"post","link":"http:\/\/anada.cloudfree.jp\/?p=2326","title":{"rendered":"Java\u899a\u66f8 Excel\u306eSLOPE\u95a2\u6570\u3092Java\u5316\u3057\u3066\u307f\u308b"},"content":{"rendered":"<p>\u56de\u5e30\u76f4\u7dda\u306e\u50be\u304d\u3092\u6c42\u3081\u308bExcel\u306eSLOPE\u95a2\u6570\u3092Java\u3067\u4f5c\u6210\u3057\u3066\u307f\u308b\u3002<\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\npublic class Main {\n    public static void main(String&#x5B;] args) throws Exception {\n        \/\/ y\u5024\u306e\u307f\u3067\u3001\u304b\u3064\u3001int\u578b\n        int y&#x5B;] = new int&#x5B;]{70,80,30,40,50,20};\n        slope(y);\n        \/\/ x,y\u5024\u3067\u3001\u304b\u3064\u3001float\u578b\n        float&#x5B;]&#x5B;] xy = { {2.5F,10.3F}\n                        , {3.0F,24.3F}\n                        , {3.2F,30.5F}\n                        , {5.0F,42.5F}\n                        , {6.1F,53.4F}\n                        , {8.9F,48.8F}\n                       };\n        slope(xy);\n    }\n    \n    \/\/ \u56de\u5e30\u76f4\u7dda\u306e\u50be\u304d\u3092\u7b97\u51fa(int\u578b y\u5024\u306e\u307f\u6e21\u3059)\n    static float slope(int val&#x5B;]) {\n        float&#x5B;]&#x5B;] f = new float&#x5B;val.length]&#x5B;2];\n        int i = 0;\n        for(int v : val) {\n            f&#x5B;i]&#x5B;0] = (float)i;\n            f&#x5B;i]&#x5B;1] = (float)v;\n            i++;\n        }\n        return slope(f);\n    }\n    \n    \/\/ \u56de\u5e30\u76f4\u7dda\u306e\u50be\u304d\u3092\u7b97\u51fa(float\u578b x, y\u5024\u3092\u6e21\u3059)\n    static float slope(float&#x5B;]&#x5B;] val) {\n    float sumX = 0;\n    float sumY = 0;\n    float sumXX = 0;\n    float sumXY = 0;\n    float n = val.length;\n    for(int i = 0; i &lt; val.length; i++){\n       float x = (float)val&#x5B;i]&#x5B;0];\n       float y = (float)val&#x5B;i]&#x5B;1];\n       sumX += x;\n       sumY += y;\n       sumXX += x*x;\n       sumXY += x*y;\n     }\n     System.out.println(&quot;a : &quot; + (float) (n*sumXY-sumX*sumY)  \/ (float) (n*sumXX-sumX*sumX));\n     System.out.println(&quot;b : &quot; + (float) (sumXX*sumY - sumXY*sumX) \/ (float) (n*sumXX - sumX*sumX));\n     return (float) (n*sumXY-sumX*sumY)  \/ (float) (n*sumXX-sumX*sumX);\n    }\n}\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u56de\u5e30\u76f4\u7dda\u306e\u50be\u304d\u3092\u6c42\u3081\u308bExcel\u306eSLOPE\u95a2\u6570\u3092Java\u3067\u4f5c\u6210\u3057\u3066\u307f\u308b\u3002 public class Main { public static void main(String&#x5B;] args) throws E [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[183],"class_list":["post-2326","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts\/2326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2326"}],"version-history":[{"count":1,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts\/2326\/revisions"}],"predecessor-version":[{"id":2707,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=\/wp\/v2\/posts\/2326\/revisions\/2707"}],"wp:attachment":[{"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2326"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/anada.cloudfree.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}