{"id":1583,"date":"2015-07-13T19:33:29","date_gmt":"2015-07-13T11:33:29","guid":{"rendered":"http:\/\/boweihe.me\/?p=1583"},"modified":"2015-07-13T19:33:29","modified_gmt":"2015-07-13T11:33:29","slug":"python-numpy-%e6%8c%89%e7%9f%a9%e9%98%b5%e7%9a%84%e6%9f%90%e4%b8%80%e5%88%97%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/dayandcarrot.space\/?p=1583","title":{"rendered":"Python numpy \u6309\u77e9\u9635\u7684\u67d0\u4e00\u5217\u6392\u5e8f"},"content":{"rendered":"<p>\u53ef\u4ee5\u53c2\u8003\u6211\u5728StackOverflow\u4e0a\u7684\u56de\u7b54<br \/>\n<a href=\"http:\/\/stackoverflow.com\/questions\/2828059\/sorting-arrays-in-numpy-by-column\/31382193#31382193\" target=\"_blank\" rel=\"noopener noreferrer\">sorting arrays in numpy by column<\/a><br \/>\n\u5229\u7528numpy\u7684argsort\u5bf9\u9700\u8981\u6392\u5e8f\u7684\u5217\u6807\u8bb0\u5e8f\u53f7\uff08\u7d22\u5f15\uff09\uff0c\u7136\u540e\u76f4\u63a5\u6539\u53d8\u539f\u59cb\u77e9\u9635\u7684\u7d22\u5f15\u5c31\u884c\u5566~<\/p>\n<pre class=\"lang:python decode:true \">a = np.array([[1,2,3],[4,5,6],[0,0,1]])\na_arg = np.argsort(a[:,1]) #\u6309\u7b2c'1'\u5217\u6392\u5e8f\na = a[a_arg]<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53ef\u4ee5\u53c2\u8003\u6211\u5728StackOverflow\u4e0a\u7684\u56de\u7b54 sorting arrays in numpy by column \u5229\u7528numpy\u7684argsort\u5bf9\u9700\u8981\u6392\u5e8f\u7684\u5217\u6807\u8bb0\u5e8f\u53f7\uff08\u7d22\u5f15\uff09\uff0c\u7136\u540e\u76f4\u63a5\u6539\u53d8\u539f\u59cb\u77e9\u9635\u7684\u7d22\u5f15\u5c31\u884c\u5566~ a = np.array([[1,2,3],[4,5,6],[0,0,1]]) a_arg = np.argsort(a[:,1]) #\u6309\u7b2c&#8217;1&#8217;\u5217\u6392\u5e8f a = a[a_arg] &nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[78,89],"class_list":["post-1583","post","type-post","status-publish","format-standard","hentry","category-study","tag-numpy","tag-python"],"_links":{"self":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/1583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1583"}],"version-history":[{"count":0,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/1583\/revisions"}],"wp:attachment":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}