{"id":74879,"date":"2018-10-04T06:32:12","date_gmt":"2018-10-03T21:32:12","guid":{"rendered":"https:\/\/www.sejuku.net\/blog\/?p=74879"},"modified":"2024-05-06T11:52:34","modified_gmt":"2024-05-06T02:52:34","slug":"%e3%80%90python%e5%ae%9f%e8%b7%b5%e3%80%91%e5%be%ae%e5%88%86%e6%96%b9%e7%a8%8b%e5%bc%8f%e3%82%92scipy%e3%81%a7%e8%a7%a3%e3%81%8f%ef%bc%81%e4%ba%8c%e9%87%8d%e6%8c%af%e3%82%8a%e5%ad%90%e3%81%ae%e5%ae%9f","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/74879","title":{"rendered":"\u3010Python\u5b9f\u8df5\u3011\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092scipy\u3067\u89e3\u304f\uff01\u4e8c\u91cd\u632f\u308a\u5b50\u306e\u5b9f\u8df5\u4ed8\u304d"},"content":{"rendered":"\n<p>\u3053\u3093\u306b\u3061\u306f\uff01\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u30fb\u30e9\u30a4\u30bf\u30fc\u306e\u5e73\u5c71\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7686\u3055\u3093\u306e\u4e2d\u306b\u306f\u5fae\u5206\u65b9\u7a0b\u5f0f\u306b\u3064\u3044\u3066\u3001\u3053\u3093\u306a\u304a\u60a9\u307f\u3092\u304a\u6301\u3061\u306e\u65b9\u3082\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n<p>\u300c\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u6570\u5024\u89e3\u6790\u3057\u3066\u307f\u305f\u3044\uff01\u3067\u3082\u3001\u3084\u308a\u65b9\u304c\u308f\u304b\u3089\u306a\u3044\u30fb\u30fb\u30fb\u300d<br>\u300cPython\u3060\u3068\u7c21\u5358\u306b\u6570\u5024\u89e3\u6790\u3084\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u3067\u304d\u308b\u3068\u805e\u3044\u305f\u3093\u3060\u3051\u3069\u3001\u65b9\u6cd5\u304c\u3088\u304f\u308f\u304b\u3089\u306a\u3044\u300d<\/p>\n\n\n\n<p>Python\u306f\u79d1\u5b66\u8a08\u7b97\u3092\u5f97\u610f\u3068\u3057\u3066\u767a\u5c55\u3057\u3066\u304d\u305f\u6b74\u53f2\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u306e\u6570\u5024\u89e3\u6790\u306f\u5f97\u610f\u5206\u91ce\u306e\u3072\u3068\u3064\u3067\u3082\u3042\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306fSciPy\u3068\u3044\u3046\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u3044\u3001\u7c21\u5358\u306a\u95a2\u6570\u304b\u3089\u30ab\u30aa\u30b9\u3068\u547c\u3070\u308c\u308b\u8907\u96d1\u306a\u3082\u306e\u307e\u3067\u3001\u89e3\u304d\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u89e3\u6790\u7d50\u679c\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3067\u898b\u308b\u65b9\u6cd5\u3082\u304a\u4f1d\u3048\u3057\u307e\u306e\u3067\u3001\u5f0f\u3060\u3051\u3067\u306f\u898b\u3048\u3066\u3053\u306a\u304b\u3063\u305f\u4e16\u754c\u304c\u767a\u898b\u3067\u304d\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u3001Python\u3092\u4f7f\u3063\u305f\u6570\u5024\u89e3\u6790\u306e\u4e16\u754c\u306b\u4e00\u6b69\u8e0f\u307f\u51fa\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3092\u8aad\u3080\u524d\u306b\u3001Python\u304c\u3069\u3093\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306a\u306e\u304b\u3092\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u305f\u3044\u4eba\u306f\u6b21\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u2192&nbsp;<a href=\"https:\/\/www.sejuku.net\/blog\/7720\">Python\u3068\u306f\uff1f\u7279\u5fb4\u3084\u3067\u304d\u308b\u3053\u3068\u3001\u6d3b\u7528\u4f8b\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u7c21\u5358\u306b\u89e3\u8aac<\/a><\/p>\n\n\n\n<p>\u306a\u304a\u3001\u305d\u306e\u4ed6\u306ePython\u306e\u8a18\u4e8b\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/www.sejuku.net\/blog\/147190\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SciPy\u3092\u4f7f\u3063\u305f\u5fae\u5206\u65b9\u7a0b\u5f0f\u306e\u89e3\u304d\u65b9<\/h2>\n\n\n\n<p>\u305d\u308c\u3067\u306fSciPy\u3092\u4f7f\u3063\u3066\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SciPy\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/h3>\n\n\n\n<p>\u307e\u305a\u306f\u3001SciPy\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<p>SciPy\u306f\u524d\u63d0\u3068\u3057\u3066numpy\u304c\u5fc5\u9808\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u7d50\u679c\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3067\u8868\u73fe\u3059\u308b\u305f\u3081\u306b\u306fmatplotlib\u306a\u3069\u3044\u308d\u3044\u308d\u3068\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u516c\u5f0f\u304c\u63a8\u5968\u3057\u3066\u3044\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u4e00\u62ec\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u53c2\u7167\u3000<a href=\"https:\/\/www.SciPy.org\/install.html\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.SciPy.org\/install.html<\/a><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">python -m pip install --user numpy SciPy matplotlib ipython jupyter pandas sympy nose<\/pre>\n\n\n\n<p>\u305f\u304f\u3055\u3093\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u305f\u3081\u3001\u305d\u3053\u305d\u3053\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u3001Anaconda\u74b0\u5883\u3092\u4f7f\u3063\u3066\u3044\u308b\u65b9\u306f\u6700\u521d\u304b\u3089\u3059\u3079\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u307f\u306e\u305f\u3081\u3001\u3053\u306e\u5de5\u7a0b\u306f\u30b9\u30ad\u30c3\u30d7\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>Anaconda\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u306f\u3053\u3061\u3089\u306e\u8a18\u4e8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<br>            <a href=\"https:\/\/www.sejuku.net\/blog\/59513\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/06\/image-113-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010\u521d\u5fc3\u8005\u5fc5\u898b\uff01\u3011Anaconda\u3067Python\u306e\u74b0\u5883\u3092\u69cb\u7bc9\u3057\u3066\u307f\u3088\u3046\uff01\uff08Mac\u7de8\uff09<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <br>            <a href=\"https:\/\/www.sejuku.net\/blog\/43671\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/02\/shutterstock_629004191_eye-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010TensorFlow\/Chainer\u6311\u6226\u8005\u5fc5\u898b\u3011Anaconda\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2025\u5e7412\u670826\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <br>            <a href=\"https:\/\/www.sejuku.net\/blog\/59340\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2019\/07\/Python-anaconda-150x85.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010Windows\u7de8\u30110\u304b\u3089\u59cb\u3081\u308b!Anaconda\u3067Python\u74b0\u5883\u3092\u4e00\u62ec\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <\/p>\n\n\n\n<p>SciPy\u306e\u7279\u5fb4\u306f\u6b21\u306e\u8aac\u660e\u306b\u96c6\u7d04\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u6570\u5b66\u3001\u79d1\u5b66\u3001\u5de5\u5b66\u306e\u305f\u3081\u306e\u6570\u5024\u89e3\u6790\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u3042\u308b\u3002<br>URL\uff1a<a href=\"https:\/\/ja.wikipedia.org\/wiki\/SciPy\">https:\/\/ja.wikipedia.org\/wiki\/SciPy<\/a><\/p>\n<\/blockquote>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u4ee5\u5916\u306b\u3082\u3044\u308d\u3044\u308d\u3068\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5fae\u5206\u3001\u7a4d\u5206\u3001\u30d5\u30fc\u30ea\u30a8\u5909\u63db\u3001\u7d71\u8a08\u3001\u306a\u3069\u306a\u3069\u3002<\/p>\n\n\n\n<p>\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u305c\u3072\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/docs.SciPy.org\/doc\/SciPy\/reference\/\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">SciPy\u3067\u7c21\u5358\u306a\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u89e3\u3044\u3066\u307f\u308b<\/h3>\n\n\n\n<p>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u3067\u304d\u307e\u3057\u305f\u306e\u3067\u3001\u3055\u3063\u305d\u304f\u7c21\u5358\u306a\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u3068\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u5f0f\u3092SciPy\u3092\u3064\u304b\u3063\u3066\u6570\u5024\u7684\u306b\u89e3\u3044\u3066\u3044\u304d\u307e\u3059\u3002<br><img decoding=\"async\" class=\"alignnone size-full wp-image-74883\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode1.jpg\" alt=\"\" width=\"88\" height=\"50\"><\/p>\n\n\n\n<p>\u3053\u306e\u5fae\u5206\u65b9\u7a0b\u5f0f\u3001\u89e3\u6790\u7684\u306b\u89e3\u304f\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u6570\u5024\u89e3\u6cd5\u306e\u7df4\u7fd2\u3068\u3044\u3046\u3053\u3068\u3067\u304a\u4ed8\u304d\u5408\u3044\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u307e\u305a\u306f\u5fc5\u8981\u306a\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">import numpy as np\nfrom SciPy.integrate import odeint\nimport matplotlib.pyplot as plt<\/pre>\n\n\n\n<p>SciPy\u306fnumpy\u3092\u524d\u63d0\u3068\u3059\u308b\u306e\u3067\u3001<strong>numpy<\/strong><br>\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u305f\u3081\u306e\u7a4d\u5206\u5668\u3068\u3057\u3066\u3001<strong>odeint<\/strong><br>\u7d50\u679c\u3092\u30b0\u30e9\u30d5\u3067\u8868\u793a\u3059\u308b\u305f\u3081\u306b<strong>\u3001matplotlib.pyplot<\/strong><\/p>\n\n\n\n<p>\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>odeint\u306f1\u968e\u306e\u5e38\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u306e\u306b\u6709\u52b9\u306a\u7a4d\u5206\u5668\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u306e\u786c\u3055\u306b\u3088\u3089\u305a1\u968e\u306e\u5e38\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u6570\u5024\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u30011\u624b\u76ee\u3068\u3057\u3066odeint\u3092\u4f7f\u3046\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>odeint\u304c\u3060\u3081\u306a\u5834\u5408\u306fode\u3068\u3044\u3046\u3088\u308a\u4e00\u822c\u7684\u306a\u7a4d\u5206\u5668\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3061\u3089\u306f\u8a08\u7b97\u65b9\u6cd5\u3092\u6307\u5b9a\u3067\u304d\u308b\u306e\u3067\u3001\u30eb\u30f3\u30b2\u30af\u30c3\u30bf\u6cd5\u306a\u3069\u3001\u7279\u5b9a\u306e\u89e3\u6cd5\u3067\u89e3\u304d\u305f\u3044\u4eba\u306b\u306f\u3046\u308c\u3057\u3044\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u3065\u3044\u3066\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u3068\u3057\u3066\u89e3\u304f\u305f\u3081\u306e\u95a2\u6570\u3068\u5b9a\u6570\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">def func(y, x, a):\n    dydx = a*y\n    return dydx\n\na = 1\ny0 = 1\nx = np.arange(0, 3, 0.01)<\/pre>\n\n\n\n<p>\u95a2\u6570\u306b\u306fdydx\u3001\u3064\u307e\u308a\u5148\u7a0b\u306e\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u8a18\u8ff0\u3057\u3066\u3001\u8fd4\u308a\u5024\u306bdydx\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u4e0b\u3067\u5f0f\u4e2d\u306e\u5b9a\u6570a,\u89e3\u306e\u521d\u671f\u5024y0,y\u306e\u5909\u6570x\u3092\u305d\u308c\u305e\u308c\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u4eca\u56de\u306e\u5c71\u5834\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u306e\u6570\u5024\u89e3\u3092\u6c42\u3081\u308b\u95a2\u6570\u3001odeint\u306b\u5404\u7a2e\u5f15\u6570\u3092\u4ee3\u5165\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">y = odeint(func, y0, x, args=(a,))<\/pre>\n\n\n\n<p>\u5f15\u6570\u306f\u3001\u5bfe\u8c61\u306e\u5fae\u5206\u65b9\u7a0b\u5f0f\u3001\u89e3\u306e\u521d\u671f\u5024\u3001\u5404\u7a2e\u5b9a\u6570\u3001\u306e\u9806\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>args\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u5024\u3092\u30bf\u30d7\u30eb\u3067\u53d6\u308b\u3053\u3068\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30d1\u30e9\u30e1\u30fc\u30bf\u304c1\u3064\u3067\u3042\u3063\u3066\u3082\u4f8b\u306e\u3088\u3046\u306b\u5f8c\u308d\u306b\u30ab\u30f3\u30de\u3092\u4ed8\u3051\u3066\u30bf\u30d7\u30eb\u8868\u8a18\u3067\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u305f\u3063\u305f\u3053\u308c\u3060\u3051\u3067\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u306e\u6570\u5024\u89e3\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306f\u6c42\u3081\u305f\u89e3\u3092\u56f3\u306b\u8868\u3059\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">plt.plot(x, y, label= 'exp')\n\nplt.legend()\n\nplt.show()<\/pre>\n\n\n\n<p>plt.plot\u3067\u56f3\u306e\u30bb\u30c3\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2\u6b21\u5143\u306e\u30d7\u30ed\u30c3\u30c8\u306e\u5834\u5408\u3001plt.plot\u3092\u4f7f\u3044\u307e\u3059\u3002\u5f15\u6570\u306f\u3001\u6a2a\u8ef8\u3001\u7e26\u8ef8\u3001\u51e1\u4f8b\u306e\u30e9\u30d9\u30eb\u3001\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>plt.legend()\u3067\u51e1\u4f8b\u3092\u30b0\u30e9\u30d5\u306b\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u6700\u5f8c\u306bplt.show()\u3092\u5165\u529b\u3059\u308b\u3053\u3068\u3067\u3001\u30b0\u30e9\u30d5\u304c\u8868\u793a\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0b\u306e\u3088\u3046\u306a\u30b0\u30e9\u30d5\u304c\u51fa\u307e\u3057\u305f\u304b\uff1f<br><img decoding=\"async\" class=\"alignnone size-full wp-image-74884\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/Figure_1.png\" alt=\"\" width=\"400\" height=\"300\" srcset=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/Figure_1.png 400w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/Figure_1-150x113.png 150w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/Figure_1-300x225.png 300w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><br>\u3053\u308c\u306f\u3001\u3054\u5b58\u77e5\u306e\u304b\u305f\u3082\u591a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6307\u6570\u95a2\u6570 y = e^x \u306e\u30b0\u30e9\u30d5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7121\u4e8b\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u89e3\u3044\u3066\u30b0\u30e9\u30d5\u307e\u3067\u8868\u793a\u3067\u304d\u307e\u3057\u305f\uff01<\/p>\n\n\n\n<p>\u3053\u3053\u307e\u3067\u306e\u30b3\u30fc\u30c9\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">import numpy as np\nfrom SciPy.integrate import odeint\nimport matplotlib.pyplot as plt\n\n\ndef func(y, x, a):\n    dydx = a*y\n    return dydx\n\na = 1\ny0 = 1\nx = np.arange(0, 3, 0.01)\n\ny = odeint(func, y0, x, args=(a,))\n\nplt.plot(x, y, label= 'exp')\nplt.legend()\nplt.show()<\/pre>\n\n\n\n<p>\u4eca\u5ea6\u306f\u6642\u9593\u5909\u5316\u3067\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u30b0\u30e9\u30d5\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6790\u7d50\u679c\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3067\u898b\u308b<\/h2>\n\n\n\n<p>\u3053\u306e\u7ae0\u3067\u306fmatplotlib\u3092\u3064\u304b\u3063\u3066\u3001\u95a2\u6570\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3055\u305b\u308b\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>matplotlib\u306e\u8a73\u3057\u3044\u8aac\u660e\u304c\u5fc5\u8981\u306a\u65b9\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<br>            <a href=\"https:\/\/www.sejuku.net\/blog\/54285\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/05\/image-21-150x86.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">\u3010Python\u5165\u9580\u3011\u3059\u3050\u308f\u304b\u308b\uff01matplotlib\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4f7f\u3044\u65b9<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <br>            <a href=\"https:\/\/www.sejuku.net\/blog\/61007\" class=\"blog-card-anchor\">\n                <div class=\"blog-card\">\n                <div class=\"blog-card-content\">\n                    <div class=\"blog-card-thumbnail\">\n                    <img decoding=\"async\" class=\"blog-card-thumbnail-img\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/06\/image-251-150x84.jpg\">\n                    <\/div>\n                    <div class=\"blog-card-title-wrap\">\n                    <div class=\"blog-card-title\">matplotlib.animation\u3067\u52d5\u304f\u30b0\u30e9\u30d5\u306b\u6311\u6226\uff01<\/div>\n                    <div class=\"blog-card-update-date\">\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5358\u632f\u308a\u5b50\u306e\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u3064\u304f\u308b<\/h3>\n\n\n\n<p>\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3055\u305b\u308b\u95a2\u6570\u3068\u3057\u3066\u3001\u9ad8\u6821\u7269\u7406\u3067\u304a\u99b4\u67d3\u307f\u306e\u5358\u632f\u308a\u5b50\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3053\u3093\u306a\u611f\u3058\u306e\u3082\u306e\u3067\u3057\u305f\u306d\u3002<br><img decoding=\"async\" class=\"alignnone size-full wp-image-74905\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/shutterstock_661087471.jpg\" alt=\"\" width=\"700\" height=\"700\" srcset=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/shutterstock_661087471.jpg 700w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/shutterstock_661087471-150x150.jpg 150w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/shutterstock_661087471-300x300.jpg 300w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/shutterstock_661087471-640x640.jpg 640w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n\n\n\n<p>\u89e3\u6790\u3059\u308b\u5fae\u5206\u65b9\u7a0b\u5f0f\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"180\" height=\"120\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode2.jpg\" alt=\"\" class=\"wp-image-74885\" srcset=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode2.jpg 180w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode2-150x100.jpg 150w\" sizes=\"(max-width: 180px) 100vw, 180px\" \/><\/figure>\n\n\n\n<p>\u7d30\u304b\u3044\u7406\u5c48\u306a\u3069\u306f<a href=\"https:\/\/ja.wikipedia.org\/wiki\/%E6%8C%AF%E3%82%8A%E5%AD%90#%E5%8D%98%E6%8C%AF%E3%82%8A%E5%AD%90%E3%81%AE%E9%81%8B%E5%8B%95%E6%96%B9%E7%A8%8B%E5%BC%8F\" target=\"_blank\" rel=\"noopener noreferrer\">Wikipedia<\/a>\u306a\u3069\u3092\u3054\u53c2\u8003\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3067\u306f\u3001\u65e9\u901f\u30b3\u30fc\u30c9\u3092\u307f\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">import matplotlib.pyplot as plt\nimport numpy as np\nfrom numpy import sin, cos\nfrom matplotlib.animation import FuncAnimation\nfrom SciPy.integrate import odeint<\/pre>\n\n\n\n<p>\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u3079\u304d\u3082\u306e\u306f\u524d\u7ae0\u306e\u3082\u306e\u306b\u52a0\u3048\u3066<\/p>\n\n\n\n<p><strong>numpy<\/strong>\u304b\u3089\u4e09\u89d2\u95a2\u6570<br>\u95a2\u6570\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3055\u305b\u308b\u305f\u3081\u306b<strong>matplotlib.animation\u306eFuncAnimation<\/strong><\/p>\n\n\n\n<p>\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3064\u3065\u3044\u3066\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u95a2\u6570\u3067\u8868\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9a\u6570\u3068\u5408\u308f\u305b\u3066\u6b21\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">def func(state, t):\n    dydt = np.zeros_like(state)\n    dydt[0] = state[1]\n    dydt[1] = -(G\/L)*sin(state[0])\n    return dydt\n\nG  = 9.8         # \u91cd\u529b\u52a0\u901f\u5ea6\nL = 1            # \u632f\u308a\u5b50\u306e\u9577\u3055\n\nth1 = 30.0      # \u89d2\u5ea6\u306e\u521d\u671f\u5024[deg]\nw1 = 0.0        # \u89d2\u901f\u5ea6\u306e\u521d\u671f\u5024[deg]\n\n# \u521d\u671f\u72b6\u614b\nstate = np.radians([th1, w1])<\/pre>\n\n\n\n<p>\u524d\u3088\u308a\u5c11\u3057\u8907\u96d1\u306b\u306a\u308a\u307e\u3057\u305f\u306d\u3002<\/p>\n\n\n\n<p>G\u3001L \u306f\u57fa\u672c\u7684\u306a\u5b9a\u6570\u3068\u3044\u3046\u3053\u3068\u3067\u554f\u984c\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>th1 , w1\u3000\u3082\u632f\u308a\u5b50\u306e\u554f\u984c\u3092\u89e3\u3044\u305f\u3053\u3068\u306e\u3042\u308b\u65b9\u306b\u306f\u304a\u306a\u3058\u307f\u306e\u3001\u89d2\u5ea6\u3068\u89d2\u901f\u5ea6\u306e\u521d\u671f\u5024\u3067\u3059\u3002<\/p>\n\n\n\n<p>np.radians() \u3092\u3064\u304b\u3063\u3066\u3001\u89d2\u5ea6\u3092\u30e9\u30b8\u30a2\u30f3\u306b\u5909\u63db\u3057\u3066\u3044\u308b\u306e\u3082\u305d\u3053\u307e\u3067\u96e3\u3057\u3044\u64cd\u4f5c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u304a\u305d\u3089\u304f\u4e00\u756a\u9055\u548c\u611f\u3092\u611f\u3058\u308b\u306e\u306f\u95a2\u6570\u5b9a\u7fa9\u306edydt = np.zeros_like(state)\u304b\u3089\u59cb\u307e\u308b\u90e8\u5206\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u4f55\u3092\u3057\u305f\u3044\u306e\u304b\u3068\u3044\u3046\u3068\u3001<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u307e\u305a\u3001\u89d2\u5ea6\u3068\u89d2\u901f\u5ea6\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u308b\uff08state = np.radians([th1, w1])\uff09<\/li>\n\n\n\n<li>state\u3068\u540c\u3058\u5f62\u306e\u30bc\u30ed\u57cb\u3081\u3055\u308c\u305f\u30ea\u30b9\u30c8dydt = [0, 0] \u3092\u4f5c\u308b\uff08dydt = np.zeros_like(state)\uff09<\/li>\n\n\n\n<li>dydt\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b90\u756a\u76ee\u306b\u89d2\u5ea6\u306e\u5fae\u5206\u3001\u3064\u307e\u308a\u89d2\u901f\u5ea6\u3092\u4ee3\u5165\uff08dydt[0] = state[1]\uff09<\/li>\n\n\n\n<li>dydt\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b91\u756a\u76ee\u306b\u89d2\u901f\u5ea6\u306e\u5fae\u5206\u3001\u3064\u307e\u308a\u632f\u308a\u5b50\u306e\u904b\u52d5\u65b9\u7a0b\u5f0f\u3092\u4ee3\u5165\uff08dydt[1] = -(G\/L)*sin(state[0])\uff09<\/li>\n<\/ol>\n\n\n\n<p>\u3068\u3044\u3046\u3053\u3068\u3092\u3084\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8981\u3059\u308b\u306b\u4e0b\u306e\u5f0f\u3092\u305d\u306e\u307e\u307e\u95a2\u6570\u5b9a\u7fa9\u306b\u66f8\u304d\u63db\u3048\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"180\" height=\"120\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode2.jpg\" alt=\"\" class=\"wp-image-74885\" srcset=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode2.jpg 180w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode2-150x100.jpg 150w\" sizes=\"(max-width: 180px) 100vw, 180px\" \/><\/figure>\n\n\n\n<p>\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092odeint\u304c\u89e3\u91c8\u3067\u304d\u308b\u5f62\u306b\u5909\u63db\u3059\u308b\u306e\u306f\u3001\u5c11\u3005\u6163\u308c\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3067\u3059\u304c\u3001\u308f\u304b\u3063\u3066\u3057\u307e\u3048\u3070\u5927\u3057\u305f\u3053\u3068\u306f\u3084\u3063\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u305c\u3072\u9811\u5f35\u3063\u3066\u6311\u6226\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3064\u3065\u3044\u3066\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u5b9f\u969b\u306b\u89e3\u3044\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">dt = 0.05\nt = np.arange(0.0, 20, dt)\n\nsol = odeint(func, state, t)\n\n\ntheta = sol[:, 0]\nx = L * sin(theta)\ny = - L * cos(theta)<\/pre>\n\n\n\n<p>\u3084\u308b\u3053\u3068\u306f\u5148\u7a0b\u3068\u3042\u307e\u308a\u5909\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u30d1\u30e9\u30e1\u30fc\u30bft\u30920\u304b\u308920\u307e\u3067\u30010.05\u523b\u307f\u3067\u52d5\u304b\u3057\u305ft\u3068\u3044\u3046\u30ea\u30b9\u30c8\u3092\u3064\u304f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>odeint()\u306b\u5148\u7a0b\u306efunc,state,t\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7d50\u679c\u3001\u89d2\u5ea6\u3068\u89d2\u901f\u5ea6\u306e\u30ea\u30b9\u30c8\u3001sol = [th,w]\u3092\u5f97\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u304b\u3089\u89d2\u5ea6\u306e\u307f\u3092\u53d6\u308a\u51fa\u3057\u3001x-y\u5ea7\u6a19\u306b\u5909\u63db\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7d50\u679c\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3067\u8868\u73fe\u3059\u308b<\/h3>\n\n\n\n<p>\u6700\u5f8c\u306b\u8a08\u7b97\u7d50\u679c\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3067\u8868\u793a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">fig = plt.figure()\nax = fig.add_subplot(111, autoscale_on=False, xlim=(-L, L), ylim=(-L, L))\nax.set_aspect('equal')\nax.grid()\n\nline, = ax.plot([], [], 'o-', lw=2)\n\ndef animate(i):\n    thisx = [0, x[i]]\n    thisy = [0, y[i]]\n\n    line.set_data(thisx, thisy)\n    return line,\n\nani = FuncAnimation(fig, animate, frames=np.arange(0, len(t)),interval=25,  blit = True)\n\nplt.show()<\/pre>\n\n\n\n<p>\u5148\u7a0b\u306e\u4f8b\u3068\u306f\u7570\u306a\u308a\u3001\u6700\u521d\u306bfigure\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30b0\u30e9\u30d5\u306b\u5bfe\u3057\u3066\u3088\u308a\u8a73\u7d30\u306a\u8a2d\u5b9a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u9006\u306b\u3001figure\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3068\u3044\u308d\u3044\u308d\u8a2d\u5b9a\u3092\u3057\u306a\u304f\u3066\u306f\u306a\u3089\u305a\u9762\u5012\u3068\u3082\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3068\u308a\u3042\u3048\u305a\u30b0\u30e9\u30d5\u306b\u3057\u305f\u3044\u5834\u5408\u3001\u3042\u3048\u3066\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u306a\u3044\u3053\u3068\u3082\u5b9f\u7528\u4e0a\u3088\u304f\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308b\u306e\u304c\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3055\u3066\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u305f\u5834\u5408\u3001\u307e\u305a\u306f\u8ef8\u3092\u8a2d\u5b9a\u3057\u306a\u304f\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u304c\u3001add_subplot()\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7b2c1\u5f15\u6570\u306e\u300c111\u300d\u306f\u3001\u8907\u6570\u306e\u30b0\u30e9\u30d5\u3092\u540c\u6642\u306b\u63cf\u5199\u3057\u305f\u308a\u91cd\u306d\u305f\u308a\u3059\u308b\u5834\u5408\u306b\u8abf\u6574\u304c\u5fc5\u8981\u306b\u306a\u308b\u90e8\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u306e\u3088\u3046\u306b\u3072\u3068\u3064\u306e\u30b0\u30e9\u30d5\u306e\u307f\u3092\u6271\u3046\u5834\u5408\u3001111\u3068\u899a\u3048\u3066\u304a\u3044\u3066\u554f\u984c\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u4ed6\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3001\u30e1\u30bd\u30c3\u30c9\u306f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>autoscale_on=False,\u3067\u8ef8\u306e\u81ea\u52d5\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3092\u6b62\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li>xlim=(-L, L), ylim=(-L, L)\u3067\u306f\u30b0\u30e9\u30d5\u306e\u5927\u304d\u3055\u3092\u5236\u9650\u3057\u3066\u3044\u307e\u3059\u3002\u632f\u308a\u5b50\u304c\u5165\u308a\u5207\u308b\u9069\u5207\u306a\u5927\u304d\u3055\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>ax.set_aspect(&#8216;equal&#8217;)\u3067\u7e26\u6a2a\u6bd4\u3092\u56fa\u5b9a\u3057\u307e\u3059\u3002\u7e26\u6a2a\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u7b49\u3057\u3044\u307b\u3046\u304c\u898b\u6804\u3048\u304c\u826f\u3044\u305f\u3081\u3067\u3059\u3002<\/li>\n\n\n\n<li>ax.grid()\u3067\u683c\u5b50\u7dda\u3092\u63cf\u753b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>line, = ax.plot([], [], &#8216;o-&#8216;, lw=2)\u306f\u3053\u306e\u6642\u70b9\u3067\u306f\u4f4d\u7f6e\u5ea7\u6a19\u3092\u6301\u305f\u306a\u3044\u7dda\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306eline\u306b\u6b21\u3005\u3068\u5ea7\u6a19\u3092\u4ee3\u5165\u3057\u306a\u304c\u3089\u63cf\u753b\u3059\u308b\u3053\u3068\u3067\u632f\u308a\u5b50\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>&#8216;o-&#8216;\u306f\u7aef\u70b9\u3068\u7dda\u306e\u5f62\u3001 lw=2\u306f\u5148\u306e\u592a\u3055\u3092\u8a2d\u5b9a\u3059\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u5f8c\u306b\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30bd\u30fc\u30b9\u3068\u306f\u524d\u5f8c\u3057\u307e\u3059\u304c\u3001FuncAnimation\u306e\u8aac\u660e\u304b\u3089\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3055\u305b\u308b\u306b\u306f\u3001\u540d\u524d\u306e\u901a\u308a\u3001matplotlib.animation \u306e FuncAnimation\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>FuncAnimation\u306e\u5f15\u6570\u306f\u3001<\/p>\n\n\n\n<p><strong>fig<\/strong>:\u5148\u7a0b\u8a2d\u5b9a\u3057\u305f\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30b0\u30e9\u30d5<br><strong>animate<\/strong>:\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3055\u305b\u305f\u3044\u95a2\u6570<\/p>\n\n\n\n<p>\u3092\u4ee3\u5165\u3057\u3066\u3042\u3052\u308c\u3070\u6700\u4f4e\u9650\u52d5\u304b\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3001\u4eca\u56de\u306f\u6642\u9593t\u309220\u307e\u3067\u3057\u304b\u5b9a\u7fa9\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u9014\u4e2d\u3067\u52d5\u4f5c\u304c\u6b62\u307e\u308a\u30a8\u30e9\u30fc\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3055\u305b\u308b\u30d5\u30ec\u30fc\u30e0\u6570\u3092\u5236\u9650\u3059\u308bframes=\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3064\u304b\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>interval , blit \u306f\u672c\u6765\u8a2d\u5b9a\u3057\u306a\u304f\u3066\u3082\u3044\u3044\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3059\u304c\u3001\u52d5\u4f5c\u306e\u6ed1\u3089\u304b\u3055\u306e\u305f\u3081\u306b\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>animate\u95a2\u6570\u306f\u3001\u5f15\u6570\u306b\u6642\u9593\u3092\u3082\u3061\u3001\u56f3\u3092\u63cf\u753b\u3059\u308b\u6a5f\u80fd\u3092\u6301\u3064\u3088\u3046\u306b\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001\u304b\u306a\u3089\u305aFuncAnimation\u306e\u524d\u306b\u5b9a\u7fa9\u3057\u306a\u304f\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u6642\u9593i\u3067\u306e\u632f\u308a\u5b50\u306e\u59cb\u70b9\u3068\u7d42\u70b9\u306e\u5ea7\u6a19\u3092thisx \u3001thisy \u306b\u4ee3\u5165\u3057\u3001set_data() \u3092\u4f7f\u3063\u3066line \u3092\u63cf\u753b\u3059\u308b\u6a5f\u80fd\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3042\u3001\u3059\u3079\u3066\u306e\u6e96\u5099\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306f\u3001plt.show()\u30b3\u30de\u30f3\u30c9\u3092\u6700\u5f8c\u306b\u5165\u308c\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">import matplotlib.pyplot as plt\nimport numpy as np\nfrom SciPy.integrate import odeint\nfrom numpy import sin, cos, pi\nfrom matplotlib.animation import FuncAnimation\n\ndef func(state, t):\n    dydt = np.zeros_like(state)\n    dydt[0] = state[1]\n    dydt[1] = -(G\/L)*sin(state[0])\n    return dydt\n\nG  = 9.8         # \u91cd\u529b\u52a0\u901f\u5ea6\nL = 1            # \u632f\u308a\u5b50\u306e\u9577\u3055\n\nth1 = 30.0      # \u89d2\u5ea6\u306e\u521d\u671f\u5024[deg]\nw1 = 0.0        # \u89d2\u901f\u5ea6\u306e\u521d\u671f\u5024[deg]\n\n# \u521d\u671f\u72b6\u614b\nstate = np.radians([th1, w1])\n\ndt = 0.05\nt = np.arange(0.0, 20, dt)\n\nsol = odeint(func, state, t)\n\ntheta = sol[:, 0]\nx = L * sin(theta)\ny = - L * cos(theta)\n\nfig = plt.figure()\nax = fig.add_subplot(111, autoscale_on=False, xlim=(-L, L), ylim=(-L, L))\nax.set_aspect('equal')\nax.grid()\n\nline, = ax.plot([], [], 'o-', lw=2)\n\ndef animate(i):\n    thisx = [0, x[i]]\n    thisy = [0, y[i]]\n\n    line.set_data(thisx, thisy)\n    return line,\n\nani = FuncAnimation(fig, animate, frames=np.arange(0, len(t)),interval=25,  blit = True)\n\nplt.show()<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u304c\u8868\u793a\u3067\u304d\u307e\u3057\u305f\u304b\uff1f<br><img decoding=\"async\" class=\"alignnone size-full wp-image-74886\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/Sample.gif\" alt=\"\" width=\"640\" height=\"480\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u91cd\u632f\u308a\u5b50\u3092\u6570\u5024\u7684\u306b\u89e3\u304f\uff01<\/h2>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u6700\u5f8c\u306b\u5fdc\u7528\u7de8\u3068\u3057\u3066\u3001\u5148\u7a0b\u306e\u632f\u308a\u5b50\u306e\u5148\u306b\u66f4\u306b\u632f\u308a\u5b50\u3092\u53d6\u308a\u4ed8\u3051\u305f\u4e8c\u91cd\u632f\u308a\u5b50\u306b\u3064\u3044\u3066\u6271\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/Pendule_double.gif\" alt=\"\u4e8c\u91cd\u632f\u308a\u5b50\"\/><\/figure>\n\n\n\n<p>\u3071\u3063\u3068\u898b\u7c21\u5358\u306b\u89e3\u3051\u305d\u3046\u306a\u611f\u3058\u3067\u3059\u304c\u3001\u5b9f\u306f\u3053\u306e\u632f\u308a\u5b50\u3001\u89e3\u6790\u7684\u306b\u89e3\u3051\u306a\u3044\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u632f\u308a\u5b50\u3092\u52d5\u304b\u3059\u3068\u3001\u975e\u5e38\u306b\u8907\u96d1\u3067\u3001\u975e\u5468\u671f\u7684\u306a\u904b\u52d5\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u6027\u8cea\u3092\u300c\u30ab\u30aa\u30b9\u300d\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3093\u306a\u30ab\u30aa\u30b9\u3092\u624b\u8efd\u306b\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3057\u3066\u307f\u3088\u3046\u3001\u3068\u3044\u3046\u306e\u304c\u672c\u7ae0\u306e\u8da3\u65e8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3068\u308a\u3042\u3048\u305a\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u904b\u52d5\u65b9\u7a0b\u5f0f\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6642\u9593\u5fae\u5206\u3092\u30c9\u30c3\u30c8\u3067\u8868\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"640\" height=\"60\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode3-640x60.jpg\" alt=\"\" class=\"wp-image-74889\" srcset=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode3-640x60.jpg 640w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode3-150x14.jpg 150w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode3-300x28.jpg 300w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode3-810x76.jpg 810w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode3.jpg 890w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p>\u3053\u308c\u3092\u5909\u5f62\u3059\u308b\u3053\u3068\u3067\u6b21\u306e\u4e00\u968e\u306e\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u5f97\u307e\u3059\u3002<br><img decoding=\"async\" class=\"alignnone size-full wp-image-74901\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode4min.jpg\" alt=\"\" width=\"700\" height=\"172\" srcset=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode4min.jpg 700w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode4min-150x37.jpg 150w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode4min-300x74.jpg 300w, https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode4min-640x157.jpg 640w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><br>\u305f\u3060\u3057<br><img decoding=\"async\" class=\"alignnone size-full wp-image-74902\" src=\"https:\/\/www.sejuku.net\/blog\/wp-content\/uploads\/2018\/10\/python_ode5.jpg\" alt=\"\" width=\"134\" height=\"36\"><\/p>\n\n\n\n<p>\u30b5\u30e9\u30ea\u3068\u66f8\u304d\u307e\u3057\u305f\u304c\u3001\u7d50\u69cb\u30e1\u30f3\u30c9\u30a6\u306a\u8a08\u7b97\u306a\u306e\u3067\u3001\u3084\u308b\u6c17\u306e\u3042\u308b\u65b9\u306f\u305c\u3072\u89e3\u6790\u529b\u5b66\u306e\u6559\u79d1\u66f8\u3068\u306b\u3089\u3081\u3063\u3053\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3055\u3066\u30011\u968e\u306e\u5fae\u5206\u65b9\u7a0b\u5f0f\u3055\u3048\u6c42\u307e\u3063\u3066\u3057\u307e\u3048\u3070\u3053\u3063\u3061\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u3068\u306f\u4eca\u307e\u3067\u3068\u5168\u304f\u540c\u3058\u624b\u9806\u3067\u6570\u5024\u89e3\u6790\u304b\u3089\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u307e\u3067\u3067\u304d\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\u3042\u308a\u304c\u305f\u3044\u3053\u3068\u306b\u3001matplotlib\u304c\u516c\u5f0f\u3067\u4e8c\u91cd\u632f\u308a\u5b50\u306e\u30bd\u30fc\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u304f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u308a\u304c\u305f\u304f\u4f7f\u308f\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u51fa\u5178\uff1a<a href=\"https:\/\/matplotlib.org\/gallery\/animation\/double_pendulum_sgskip.html#sphx-glr-gallery-animation-double-pendulum-sgskip-py\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/matplotlib.org\/gallery\/animation\/double_pendulum_sgskip.html#sphx-glr-gallery-animation-double-pendulum-sgskip-py<\/a><\/p>\n\n\n\n<p>\u30bd\u30fc\u30b9\u306e\u5168\u6587\u304c\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">from numpy import sin, cos\nimport numpy as np\nimport matplotlib.pyplot as plt\nimport SciPy.integrate as integrate\nimport matplotlib.animation as animation\n\nG = 9.8  # acceleration due to gravity, in m\/s^2\nL1 = 1.0  # length of pendulum 1 in m\nL2 = 1.0  # length of pendulum 2 in m\nM1 = 1.0  # mass of pendulum 1 in kg\nM2 = 1.0  # mass of pendulum 2 in kg\n\n\ndef derivs(state, t):\n\n    dydx = np.zeros_like(state)\n    dydx[0] = state[1]\n\n    del_ = state[2] - state[0]\n    den1 = (M1 + M2)*L1 - M2*L1*cos(del_)*cos(del_)\n    dydx[1] = (M2*L1*state[1]*state[1]*sin(del_)*cos(del_) +\n               M2*G*sin(state[2])*cos(del_) +\n               M2*L2*state[3]*state[3]*sin(del_) -\n               (M1 + M2)*G*sin(state[0]))\/den1\n\n    dydx[2] = state[3]\n\n    den2 = (L2\/L1)*den1\n    dydx[3] = (-M2*L2*state[3]*state[3]*sin(del_)*cos(del_) +\n               (M1 + M2)*G*sin(state[0])*cos(del_) -\n               (M1 + M2)*L1*state[1]*state[1]*sin(del_) -\n               (M1 + M2)*G*sin(state[2]))\/den2\n\n    return dydx\n\n# create a time array from 0..100 sampled at 0.05 second steps\ndt = 0.05\nt = np.arange(0.0, 20, dt)\n\n# th1 and t<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">are the initial angles (degrees)<\/h2>\n\n\n\n<p># w10 and w20 are the initial angular velocities (degrees per second) th1 = 120.0 w1 = 0.0 t<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">= -10.0<\/h2>\n\n\n\n<p>w2 = 0.0 # initial state state = np.radians([th1, w1, th2, w2]) # integrate your ODE using SciPy.integrate. y = integrate.odeint(derivs, state, t) x1 = L1*sin(y[:, 0]) # \u30ea\u30b9\u30c8\u306e0\u756a\u76ee\u3001\u03b8\uff11\u3092\u53d6\u308a\u51fa\u3057\u3066\u3044\u307e\u3059\u3002 y1 = -L1*cos(y[:, 0]) x2 = L2*sin(y[:, 2]) + x1# \u30ea\u30b9\u30c8\u306e2\u756a\u76ee\u3001\u03b82\u3092\u53d6\u308a\u51fa\u3057\u3066\u3044\u307e\u3059\u3002 y2 = -L2*cos(y[:, 2]) + y1 fig = plt.figure() ax = fig.add_subplot(111, autoscale_on=False, xlim=(-2, 2), ylim=(-2, 2)) ax.set_aspect(&#8216;equal&#8217;) ax.grid() line, = ax.plot([], [], &#8216;o-&#8216;, lw=2) # \u30bf\u30a4\u30de\u30fc\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f time_template = &#8216;time = %.1fs&#8217; time_text = ax.text(0.05, 0.9, &#8221;, transform=ax.transAxes) def init(): line.set_data([], []) #\u3000\u3053\u308c\u3082\u30bf\u30a4\u30de\u30fc\u7528\u306e\u521d\u671f\u5316 time_text.set_text(&#8221;) return line, time_text def animate(i): thisx = [0, x1[i], x2[i]] thisy = [0, y1[i], y2[i]] line.set_data(thisx, thisy) # \u30bf\u30a4\u30de\u30fc\u66f4\u65b0\u7528 time_text.set_text(time_template % (i*dt)) return line, time_text ani = animation.FuncAnimation(fig, animate, np.arange(1, len(y)), interval=25, blit=True, init_func=init) plt.show()<\/p>\n\n\n\n<p>\u306a\u304b\u306a\u304b\u306e\u5206\u91cf\u306a\u306e\u3067\u3001\u5c3b\u8fbc\u307f\u3057\u3066\u3057\u307e\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u5b89\u5fc3\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3084\u3063\u3066\u3044\u308b\u3053\u3068\u306f2\u7ae0\u306e\u5358\u632f\u308a\u5b50\u3068\u307b\u3068\u3093\u3069\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u307e\u3063\u305f\u304f\u4e00\u7dd2\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u5b9a\u7fa9\u306f\u4e8c\u91cd\u632f\u308a\u5b50\u306e\u305f\u3081\u3001\u8907\u96d1\u306b\u306f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3067\u3059\u304c\u3001\u5fae\u5206\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u306e\u306f\u76f8\u5909\u308f\u3089\u305aodeint\u3067\u3059\u3057\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306f\u6642\u9593\u8868\u793a\u6a5f\u80fd\u304c\u3064\u3044\u305f\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305c\u3072\u5b9f\u969b\u306b\u52d5\u304b\u3057\u3066\u307f\u3066\u3001\u81ea\u5206\u306e\u624b\u3067\u30ab\u30aa\u30b9\u3092\u4f53\u611f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u60f3\u50cf\u4ee5\u4e0a\u306b\u5909\u306a\u52d5\u304d\u306b\u306a\u308b\u3053\u3068\u3046\u3051\u3042\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 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