{"id":9235,"date":"2024-07-12T14:07:39","date_gmt":"2024-07-12T05:07:39","guid":{"rendered":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/?p=9235"},"modified":"2024-07-12T14:07:39","modified_gmt":"2024-07-12T05:07:39","slug":"matplotlib-%e3%81%a7%e3%82%ac%e3%82%a6%e3%82%b9%e9%96%a2%e6%95%b0%e3%81%ae%e5%b1%b1%e3%82%92%e6%8f%8f%e3%81%8f","status":"publish","type":"post","link":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/9235\/","title":{"rendered":"Matplotlib \u3067\u30ac\u30a6\u30b9\u95a2\u6570\u306e\u5c71\u3092\u63cf\u304f"},"content":{"rendered":"
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\u30ac\u30a6\u30b9\u7a4d\u5206<\/a>\u306e\u8aac\u660e\u3067\u4f7f\u3063\u3066\u3044\u308b\u306e\u3067\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\u5fc5\u8981\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u306e import \u3068\u8a2d\u5b9a<\/h3>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[1]:<\/div>\n
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import<\/span> matplotlib.pyplot<\/span> as<\/span> plt<\/span>\r\nimport<\/span> numpy<\/span> as<\/span> np<\/span>\r\n\r\n# \u30b0\u30e9\u30d5\u3092 SVG \u3067 Notebook \u306b\u30a4\u30f3\u30e9\u30a4\u30f3\u8868\u793a<\/span>\r\n%<\/span>config<\/span> InlineBackend.figure_formats = ['svg']\r\n\r\nplt<\/span>.<\/span>rcParams<\/span>[<\/span>'mathtext.fontset'<\/span>]<\/span> =<\/span> 'cm'<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u30ac\u30a6\u30b9\u95a2\u6570\u306e\u5c71<\/h3>\n
$\\displaystyle z = f(x, y) = e^{-(x^2 + y^2)}$ \u3092\u63cf\u304f\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[2]:<\/div>\n
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def<\/span> f<\/span>(<\/span>x<\/span>,<\/span> y<\/span>):<\/span>\r\n    return<\/span> np<\/span>.<\/span>exp<\/span>(<\/span>-<\/span>x<\/span>**<\/span>2<\/span> -<\/span>y<\/span>**<\/span>2<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[3]:<\/div>\n
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fig<\/span> =<\/span> plt<\/span>.<\/span>figure<\/span>(<\/span>figsize<\/span>=<\/span>[<\/span>6.4<\/span>,<\/span> 6.4<\/span>])<\/span>\r\nax<\/span> =<\/span> fig<\/span>.<\/span>add_subplot<\/span>(<\/span>projection<\/span>=<\/span>'3d'<\/span>)<\/span>\r\nfig<\/span>.<\/span>subplots_adjust<\/span>(<\/span>bottom<\/span>=<\/span>0<\/span>,<\/span>left<\/span>=<\/span>0<\/span>)<\/span>\r\n\r\nx<\/span> =<\/span> np<\/span>.<\/span>linspace<\/span>(<\/span>-<\/span>3<\/span>,<\/span> 3<\/span>)<\/span>\r\ny<\/span> =<\/span> np<\/span>.<\/span>linspace<\/span>(<\/span>-<\/span>3<\/span>,<\/span> 3<\/span>)<\/span>\r\nx<\/span>,<\/span> y<\/span> =<\/span> np<\/span>.<\/span>meshgrid<\/span>(<\/span>x<\/span>,<\/span> y<\/span>)<\/span>\r\nax<\/span>.<\/span>plot_surface<\/span>(<\/span>x<\/span>,<\/span> y<\/span>,<\/span> f<\/span>(<\/span>x<\/span>,<\/span> y<\/span>),<\/span> cmap<\/span> =<\/span> \"Blues_r\"<\/span>)<\/span>\r\n\r\n# x \u8ef8<\/span>\r\nplt<\/span>.<\/span>plot<\/span>([<\/span>-<\/span>3<\/span>,<\/span> 2.2<\/span>],<\/span> [<\/span>0<\/span>,<\/span> 0<\/span>],<\/span> [<\/span>0<\/span>,<\/span> 0<\/span>],<\/span> \r\n         lw<\/span> =<\/span> 0.5<\/span>,<\/span> c<\/span> =<\/span> \"lightgray\"<\/span>,<\/span> zorder<\/span>=<\/span>5<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>2.5<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> \"$x$\"<\/span>,<\/span> \r\n        fontsize<\/span>=<\/span>\"x-large\"<\/span>,<\/span> ha<\/span>=<\/span>\"center\"<\/span>,<\/span> va<\/span>=<\/span>\"center\"<\/span>,<\/span> c<\/span>=<\/span>'white'<\/span>)<\/span>\r\n# y \u8ef8<\/span>\r\nplt<\/span>.<\/span>plot<\/span>([<\/span>0<\/span>,<\/span> 0<\/span>],<\/span> [<\/span>-<\/span>3<\/span>,<\/span> 2.8<\/span>],<\/span> [<\/span>0<\/span>,<\/span> 0<\/span>],<\/span> \r\n         lw<\/span> =<\/span> 0.5<\/span>,<\/span> c<\/span> =<\/span> \"lightgray\"<\/span>,<\/span> zorder<\/span>=<\/span>5<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>0<\/span>,<\/span> 2.9<\/span>,<\/span> 0<\/span>,<\/span> \"$y$\"<\/span>,<\/span> \r\n        fontsize<\/span>=<\/span>\"x-large\"<\/span>,<\/span> ha<\/span>=<\/span>\"center\"<\/span>,<\/span> va<\/span>=<\/span>\"center\"<\/span>,<\/span> c<\/span>=<\/span>'white'<\/span>)<\/span>\r\n# z \u8ef8<\/span>\r\nplt<\/span>.<\/span>plot<\/span>([<\/span>0<\/span>,<\/span> 0<\/span>],<\/span> [<\/span>0<\/span>,<\/span> 0<\/span>],<\/span> [<\/span>0<\/span>,<\/span> 1.2<\/span>],<\/span> \r\n         lw<\/span> =<\/span> 0.5<\/span>,<\/span> c<\/span> =<\/span> \"lightgray\"<\/span>,<\/span> zorder<\/span>=<\/span>5<\/span>)<\/span>\r\nax<\/span>.<\/span>text<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>,<\/span> 1.3<\/span>,<\/span> \"$z$\"<\/span>,<\/span> \r\n        fontsize<\/span>=<\/span>\"x-large\"<\/span>,<\/span> ha<\/span>=<\/span>\"center\"<\/span>,<\/span> va<\/span>=<\/span>\"center\"<\/span>,<\/span> c<\/span>=<\/span>'gray'<\/span>)<\/span>\r\n\r\nax<\/span>.<\/span>text<\/span>(<\/span>0<\/span>,<\/span> 0.4<\/span>,<\/span> 1<\/span>,<\/span> \"$z = e^{-(x^2 + y^2)}$\"<\/span>,<\/span> \r\n        fontsize<\/span>=<\/span>\"xx-large\"<\/span>,<\/span> ha<\/span>=<\/span>\"left\"<\/span>,<\/span> va<\/span>=<\/span>\"top\"<\/span>,<\/span> c<\/span>=<\/span>'blue'<\/span>)<\/span>\r\n\r\nax<\/span>.<\/span>set_xlim<\/span>(<\/span>-<\/span>2.3<\/span>,<\/span> 2.3<\/span>)<\/span>\r\nax<\/span>.<\/span>set_ylim<\/span>(<\/span>-<\/span>2.3<\/span>,<\/span> 2.3<\/span>)<\/span>\r\nax<\/span>.<\/span>set_zlim<\/span>(<\/span>0<\/span>,<\/span> 1.5<\/span>)<\/span>\r\nax<\/span>.<\/span>view_init<\/span>(<\/span>elev<\/span> =<\/span> 10<\/span>,<\/span> azim<\/span> =<\/span> 10<\/span>,<\/span> roll<\/span> =<\/span> 0<\/span>)<\/span>\r\nax<\/span>.<\/span>axis<\/span>(<\/span>False<\/span>);<\/span>\r\nplt<\/span>.<\/span>savefig<\/span>(<\/span>\"gauss00.png\"<\/span>,<\/span> dpi<\/span>=<\/span>360<\/span>);<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\"\"<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u30ac\u30a6\u30b9\u7a4d\u5206\u306e\u8aac\u660e\u3067\u4f7f\u3063\u3066\u3044\u308b\u306e\u3067\u3002<\/p>
\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","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":[13,21],"tags":[],"class_list":["post-9235","post","type-post","status-publish","format-standard","hentry","category-matplotlib","category-21","nodate","item-wrap"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t