{"id":188,"date":"2021-12-10T08:41:45","date_gmt":"2021-12-10T00:41:45","guid":{"rendered":"http:\/\/purplepoolobservatory.com\/?p=188"},"modified":"2021-12-10T08:41:45","modified_gmt":"2021-12-10T00:41:45","slug":"%e5%a6%82%e4%bd%95%e7%94%a8python%e5%88%a4%e6%96%ad%e6%9f%90%e7%82%b9%e8%a2%ab%e5%8c%85%e5%90%ab%e5%9c%a8%e4%b8%80%e4%b8%aa%e5%a4%9a%e8%be%b9%e5%bd%a2%e4%b8%ad","status":"publish","type":"post","link":"https:\/\/purplepoolobservatory.com\/?p=188","title":{"rendered":"\u5982\u4f55\u7528python\u5224\u65ad\u67d0\u70b9\u88ab\u5305\u542b\u5728\u4e00\u4e2a\u591a\u8fb9\u5f62\u4e2d"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\u53c2\u8003\u81ea\/questions\/21566610\/crop-out-partial-image-using-numpy-or-scipy\r\n\r\n\u5224\u65ad\u67d0\u70b9\u662f\u5426\u5904\u4e8e\u67d0\u4e2a\u591a\u8fb9\u5f62\u5185\u6216\u8fb9\u754c\u4e0a\u5728matlab\u4e2d\u53ef\u4ee5\u65b9\u4fbf\u5730\u7528inpolygon\u51fd\u6570\u8fbe\u5230\uff0cpython\u7684\u67d0\u4e9b\u6a21\u5757\u4e2d\u6709\u7c7b\u4f3c\u7684\u529f\u80fd\u3002\r\n\r\nimport numpy as np\r\n\r\nfrom matplotlib.path import Path\r\n\r\nxc = np.array(&#91;219.5,284.8,340.8,363.5,342.2,308.8,236.8,214.2])\r\n\r\nyc = np.array(&#91;284.8,220.8,203.5,252.8,328.8,386.2,382.2,328.8])\r\n\r\nxycrop=np.vstack((xc,yc)).T #\u8fd9\u91cc\u7684vstack\u5c31\u662f\u5782\u76f4\u53e0\u52a0\u7ec4\u5408\u5f62\u6210\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\uff0cT\u662f\u8f6c\u7f6e\r\n\r\nrnd=np.random.randn(50)*50.0+250.0\r\n\r\nrnd=rnd.reshape(25,2)\r\n\r\npth=Path(xycrop,closed=False)\r\n\r\nmask=pth.contains_points(rnd) # mask\u91cc\u5305\u542b\u4e86\u5bf9\u5e94\u70b9\u662f\u5426\u5305\u542b\u5728\u591a\u8fb9\u5f62\u4e2d\u7684\u903b\u8f91\u6570\u503c\r\n\r\n\u53ef\u4ee5\u7528rnd&#91;mask,:]\u83b7\u5f97\u5305\u542b\u5728\u591a\u8fb9\u5f62\u5185\u7684\u70b9\uff0c\u7528rnd&#91;~mask,:]\u83b7\u5f97\u5728\u5916\u9762\u7684\u70b9\u3002<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-188","post","type-post","status-publish","format-gallery","hentry","category-technology","post_format-post-format-gallery"],"_links":{"self":[{"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=\/wp\/v2\/posts\/188","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=188"}],"version-history":[{"count":1,"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=\/wp\/v2\/posts\/188\/revisions"}],"predecessor-version":[{"id":189,"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=\/wp\/v2\/posts\/188\/revisions\/189"}],"wp:attachment":[{"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=188"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=188"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/purplepoolobservatory.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=188"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}