{"id":10126,"date":"2025-01-28T13:50:59","date_gmt":"2025-01-28T04:50:59","guid":{"rendered":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/?p=10126"},"modified":"2025-01-28T17:49:56","modified_gmt":"2025-01-28T08:49:56","slug":"matplotlib-%e3%81%a7%e5%8d%98%e6%8c%af%e3%82%8a%e5%ad%90%e3%81%ae%e6%8c%af%e5%b9%85%e3%81%ae%e7%b5%b5%e3%82%92%e6%8f%8f%e3%81%8f","status":"publish","type":"post","link":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/10126\/","title":{"rendered":"Matplotlib \u3067\u5358\u632f\u308a\u5b50\u306e\u632f\u5e45\u306e\u7d75\u3092\u63cf\u304f"},"content":{"rendered":"

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\u30e9\u30a4\u30d6\u30e9\u30ea\u306e import<\/h3>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[1]:<\/div>\n
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import<\/span> numpy<\/span> as<\/span> np<\/span>\r\nimport<\/span> matplotlib.pyplot<\/span> as<\/span> plt<\/span>\r\n\r\nfrom<\/span> matplotlib.patches<\/span> import<\/span> *<\/span>\r\n\r\n# \u4ee5\u4e0b\u306f\u30b0\u30e9\u30d5\u3092 SVG \u3067 Notebook \u306b\u30a4\u30f3\u30e9\u30a4\u30f3\u8868\u793a\u3055\u305b\u308b\u8a2d\u5b9a<\/span>\r\n%<\/span>config<\/span> InlineBackend.figure_formats = ['svg']\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[2]:<\/div>\n
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# ax \u3092\u4f7f\u3046\u969b\u306e\u6700\u521d\u306e\u304a\u307e\u3058\u306a\u3044<\/span>\r\nfig<\/span>,<\/span> ax<\/span> =<\/span> plt<\/span>.<\/span>subplots<\/span>(<\/span>figsize<\/span> =<\/span> [<\/span>6.4<\/span>,<\/span> 6.4<\/span>])<\/span>\r\n\r\n# \u30a2\u30b9\u30da\u30af\u30c8\u3092 equal \u306b<\/span>\r\nax<\/span>.<\/span>set_aspect<\/span>(<\/span>'equal'<\/span>)<\/span>\r\n\r\n# ticks \u306f\u3064\u3051\u306a\u3044<\/span>\r\nax<\/span>.<\/span>set_xticks<\/span>([])<\/span>\r\nax<\/span>.<\/span>set_yticks<\/span>([])<\/span>\r\n\r\n# \u8868\u793a\u7bc4\u56f2<\/span>\r\nax<\/span>.<\/span>axis<\/span>([<\/span>-<\/span>2.5<\/span>,<\/span> 2.5<\/span>,<\/span> -<\/span>4<\/span>,<\/span> 1<\/span>])<\/span>\r\n\r\n# x\u8ef8 y\u8ef8\u306f dashed \u306b\u3002<\/span>\r\nax<\/span>.<\/span>axhline<\/span>(<\/span>0<\/span>,<\/span> c<\/span>=<\/span>'gray'<\/span>,<\/span> ls<\/span>=<\/span>'--'<\/span>,<\/span> lw<\/span>=<\/span>0.5<\/span>)<\/span>\r\nax<\/span>.<\/span>axvline<\/span>(<\/span>0<\/span>,<\/span> c<\/span>=<\/span>'gray'<\/span>,<\/span> ls<\/span>=<\/span>'--'<\/span>,<\/span> lw<\/span>=<\/span>0.5<\/span>)<\/span>\r\n\r\n# 30\u5ea6\u306b\u632f\u308c\u305f\u5358\u632f\u308a\u5b50<\/span>\r\nth<\/span> =<\/span> np<\/span>.<\/span>radians<\/span>(<\/span>30<\/span>)<\/span>\r\n# \u30ef\u30a4\u30e4\u30fc\u306e\u9577\u3055<\/span>\r\nell<\/span> =<\/span> 3<\/span>\r\n\r\n# \u30ef\u30a4\u30e4\u30fc<\/span>\r\nax<\/span>.<\/span>plot<\/span>([<\/span>0<\/span>,<\/span>  ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>)],<\/span> [<\/span>0<\/span>,<\/span> -<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>cos<\/span>(<\/span>th<\/span>)],<\/span> color<\/span> =<\/span> 'k'<\/span>)<\/span>\r\nax<\/span>.<\/span>plot<\/span>([<\/span>0<\/span>,<\/span> -<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>)],<\/span> [<\/span>0<\/span>,<\/span> -<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>cos<\/span>(<\/span>th<\/span>)],<\/span> color<\/span> =<\/span> 'k'<\/span>)<\/span>\r\n\r\n# \u304a\u3082\u308a<\/span>\r\nax<\/span>.<\/span>scatter<\/span>([<\/span> ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>)],<\/span> [<\/span>-<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>cos<\/span>(<\/span>th<\/span>)],<\/span> color<\/span>=<\/span>'red'<\/span>)<\/span>\r\nax<\/span>.<\/span>scatter<\/span>([<\/span>-<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>)],<\/span> [<\/span>-<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>cos<\/span>(<\/span>th<\/span>)],<\/span> color<\/span>=<\/span>'red'<\/span>)<\/span>\r\n\r\n# \u304a\u3082\u308a\u306e\u8ecc\u8de1\u306e\u5186\u5f27<\/span>\r\np<\/span> =<\/span> Arc<\/span>((<\/span>0<\/span>,<\/span> 0<\/span>),<\/span> 6<\/span>,<\/span> 6<\/span>,<\/span> theta1<\/span> =<\/span> 240<\/span>,<\/span> theta2<\/span> =<\/span> 300<\/span>,<\/span> \r\n        color<\/span> =<\/span> 'k'<\/span>,<\/span> lw<\/span> =<\/span> 0.5<\/span>,<\/span>ls<\/span>=<\/span>'--'<\/span>)<\/span>\r\nax<\/span>.<\/span>add_patch<\/span>(<\/span>p<\/span>)<\/span>\r\n\r\n# \u5186\u5f27\u3067\u89d2\u5ea6<\/span>\r\n# (1)<\/span>\r\np<\/span>=<\/span>Arc<\/span>((<\/span>0<\/span>,<\/span> 0<\/span>),<\/span> 1<\/span>,<\/span> 1<\/span>,<\/span> theta1<\/span> =<\/span> 270<\/span>,<\/span> theta2<\/span> =<\/span> 300<\/span>,<\/span> \r\n        color<\/span> =<\/span> 'b'<\/span>,<\/span> lw<\/span> =<\/span> 1.5<\/span>)<\/span>\r\nax<\/span>.<\/span>add_patch<\/span>(<\/span>p<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>0.15<\/span>,<\/span> -<\/span>0.63<\/span>,<\/span> '(1)'<\/span>,<\/span> color<\/span> =<\/span> 'b'<\/span>,<\/span> ha<\/span> =<\/span> 'center'<\/span>)<\/span>\r\n\r\n# (2)<\/span>\r\np<\/span>=<\/span>Arc<\/span>((<\/span>0<\/span>,<\/span> 0<\/span>),<\/span> 2<\/span>,<\/span> 2<\/span>,<\/span> theta1<\/span> =<\/span> 240<\/span>,<\/span> theta2<\/span> =<\/span> 300<\/span>,<\/span> \r\n        color<\/span> =<\/span> 'red'<\/span>,<\/span> lw<\/span> =<\/span> 1.5<\/span>)<\/span>\r\nax<\/span>.<\/span>add_patch<\/span>(<\/span>p<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>0.1<\/span>,<\/span> -<\/span>1.15<\/span>,<\/span> '(2)'<\/span>,<\/span> color<\/span> =<\/span> 'red'<\/span>,<\/span> ha<\/span> =<\/span> 'center'<\/span>)<\/span>\r\n\r\n# \u76f4\u7dda\u3067\u6c34\u5e73\u8ddd\u96e2<\/span>\r\n# (3)<\/span>\r\nax<\/span>.<\/span>plot<\/span>([<\/span>0<\/span>,<\/span> ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>)],<\/span> \r\n        [<\/span>-<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>cos<\/span>(<\/span>th<\/span>),<\/span> -<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>cos<\/span>(<\/span>th<\/span>)],<\/span> c<\/span>=<\/span>'tab:blue'<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>0.6<\/span>,<\/span> -<\/span>2.55<\/span>,<\/span> '(3)'<\/span>,<\/span> c<\/span>=<\/span>'tab:blue'<\/span>)<\/span>\r\n\r\n# (4)<\/span>\r\nax<\/span>.<\/span>plot<\/span>([<\/span>-<\/span>ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>),<\/span> ell<\/span>*<\/span>np<\/span>.<\/span>sin<\/span>(<\/span>th<\/span>)],<\/span> \r\n        [<\/span>-<\/span>2.63<\/span>,<\/span> -<\/span>2.63<\/span>],<\/span> c<\/span>=<\/span>'tab:orange'<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>-<\/span>0.25<\/span>,<\/span> -<\/span>2.8<\/span>,<\/span> '(4)'<\/span>,<\/span> c<\/span>=<\/span>'tab:orange'<\/span>)<\/span>\r\n\r\n# \u30bf\u30a4\u30c8\u30eb<\/span>\r\nax<\/span>.<\/span>set_title<\/span>(<\/span>'\u5358\u632f\u308a\u5b50\u306e\u300c\u632f\u5e45\u300d\u306f\u3069\u308c\uff1f'<\/span>);<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u554f\u984c<\/strong><\/span>\uff1a\u5358\u632f\u308a\u5b50\u306e\u300c\u632f\u5e45<\/strong><\/span>\u300d\u306f\u6b21\u306e\u3046\u3061\u306e\u3069\u308c\uff1f<\/p>\n
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  • (1) \u306e\u89d2\u5ea6\uff0c\u3059\u306a\u308f\u3061\u925b\u76f4\u4e0b\u5411\u304d\u3092\u30bc\u30ed\u3068\u3057\u305f\u3068\u304d\u306e\u632f\u308c\u89d2\u306e\u6700\u5927\u5024<\/li>\n
  • (2) \u306e\u89d2\u5ea6\uff0c\u3059\u306a\u308f\u3061 (1) \u306e\u89d2\u5ea6\u306e2\u500d<\/li>\n
  • (3) \u306e\u9577\u3055\uff0c\u3059\u306a\u308f\u3061\u632f\u308a\u5b50\u306e\u652f\u70b9\u304b\u3089\u306e\u6c34\u5e73\u65b9\u5411\u306e\u9577\u3055\u306e\u6700\u5927\u5024<\/li>\n
  • (4) \u306e\u9577\u3055\uff0c\u3059\u306a\u308f\u3061 (3) \u306e\u9577\u3055\u306e2\u500d<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":33,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[13],"tags":[],"class_list":["post-10126","post","type-post","status-publish","format-standard","hentry","category-matplotlib","nodate","item-wrap"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/10126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/users\/33"}],"replies":[{"embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/comments?post=10126"}],"version-history":[{"count":3,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/10126\/revisions"}],"predecessor-version":[{"id":10131,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/10126\/revisions\/10131"}],"wp:attachment":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/media?parent=10126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/categories?post=10126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/tags?post=10126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}