{"id":7573,"date":"2024-02-11T11:40:20","date_gmt":"2024-02-11T02:40:20","guid":{"rendered":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/?p=7573"},"modified":"2024-02-14T14:05:38","modified_gmt":"2024-02-14T05:05:38","slug":"sympy-plotting-backends-%e3%81%a7%e3%83%91%e3%83%a9%e3%83%a1%e3%83%bc%e3%82%bf%e3%82%92%e5%a4%89%e3%81%88%e3%81%a6%e8%a4%87%e6%95%b0%e3%81%ae%e6%9b%b2%e7%b7%9a%e3%82%92%e4%b8%80%e6%b0%97%e3%81%ab","status":"publish","type":"post","link":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/7573\/","title":{"rendered":"SymPy Plotting Backends \u3066\u3099\u8907\u6570\u306e\u66f2\u7dda\u3092\u4e00\u6c17\u306b\u30b0\u30e9\u30d5\u306b\u3059\u308b\u4f8b\u3068\u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u4f8b"},"content":{"rendered":"
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Python \u306e SymPy Plotting Backends \u3092\u4f7f\u3063\u3066\uff0c\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5909\u3048\u3066\u8907\u6570\u306e\u66f2\u7dda\u3092\u4e00\u6c17\u306b\u30b0\u30e9\u30d5\u306b\u3059\u308b\u4f8b\u3002\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u969b\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u30822\u901a\u308a\u306e\u4f8b\u3092\u307e\u3068\u3081\u305f\u3002<\/p>\n

\u4f8b\uff1a\u659c\u65b9\u6295\u5c04<\/h3>\n

\u7c21\u5358\u306e\u305f\u3081\u306b\uff08\u521d\u901f\u5ea6 $v_0 \\rightarrow 1$, \u91cd\u529b\u52a0\u901f\u5ea6 $g \\rightarrow 1$ \u306a\u3069\u3068\u3057\u3066\uff09\u9069\u5b9c\u7121\u6b21\u5143\u5316\u3057\u305f\u89e3\u306f\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6642\u9593 $t$ \u3068\u6295\u5c04\u89d2\u5ea6 $\\theta$ \u306e\u95a2\u6570\u3068\u306a\u308b\u3002<\/p>\n

\\begin{eqnarray}
\nx(t, \\theta) &=& t \\cos\\theta \\\\
\ny(t, \\theta) &=& t \\sin\\theta -\\frac{1}{2} t^2
\n\\end{eqnarray}<\/p>\n

$t=0$ \u3067\u5730\u4e0a $y=0$ \u304b\u3089\u6295\u5c04\u3055\u308c\u305f\u7269\u4f53\u304c\u3075\u305f\u305f\u3073\u5730\u4e0a\u306b\u843d\u3061\u308b\u307e\u3067\u306e\u6ede\u7a7a\u6642\u9593 $t_d$ \u306f
\n$$t_d(\\theta) = 2 \\sin\\theta$$<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\u5fc5\u8981\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u306e import<\/h3>\n

\u5fc5\u8981\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u3092 import \u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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In\u00a0[1]:<\/div>\n
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from<\/span> sympy.abc<\/span> import<\/span> *<\/span>\r\nfrom<\/span> sympy<\/span> import<\/span> *<\/span>\r\n# SymPy Plotting Backends (SPB) <\/span>\r\nfrom<\/span> spb<\/span> import<\/span> *<\/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<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u95a2\u6570\u306e\u5b9a\u7fa9<\/h3>\n<\/div>\n<\/div>\n<\/div>\n
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# \u89d2\u5ea6 th \u306f\u5ea6\u3067 <\/span>\r\ndef<\/span> x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>):<\/span>\r\n    theta<\/span> =<\/span> th<\/span> *<\/span> pi<\/span>\/<\/span>180<\/span>\r\n    return<\/span> t<\/span>*<\/span>cos<\/span>(<\/span>theta<\/span>)<\/span>\r\n\r\ndef<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>):<\/span>\r\n    theta<\/span> =<\/span> th<\/span> *<\/span> pi<\/span>\/<\/span>180<\/span>\r\n    return<\/span> t<\/span>*<\/span>sin<\/span>(<\/span>theta<\/span>)<\/span> -<\/span> t<\/span>**<\/span>2<\/span>\/<\/span>2<\/span>\r\n\r\ndef<\/span> td<\/span>(<\/span>th<\/span>):<\/span>\r\n    theta<\/span> =<\/span> th<\/span> *<\/span> pi<\/span>\/<\/span>180<\/span>\r\n    return<\/span> 2<\/span>*<\/span>sin<\/span>(<\/span>theta<\/span>)<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u8ecc\u9053\u306e\u30b0\u30e9\u30d5<\/h3>\n
SPB \u3067\u5a92\u4ecb\u5909\u6570\u8868\u793a\u306e\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u306b\u306f\uff0c<\/p>\n
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plot_parametric<\/span>(<\/span>x<\/span>(<\/span>t<\/span>),<\/span> y<\/span>(<\/span>t<\/span>),<\/span> (<\/span>t<\/span>,<\/span> tmin<\/span>,<\/span> tmax<\/span>))<\/span>\r\n<\/pre>\n<\/div>\n
\u30c7\u30d5\u30a9\u30eb\u30c8\u3067 use_cm = True<\/code> \u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\uff0c\u30ab\u30e9\u30fc\u30de\u30c3\u30d7\u304c\u4e0d\u8981\u306a\u3089 False<\/code> \u306b\u3002<\/p>\n
\u3068\u308a\u3042\u3048\u305a 1 \u672c\u306e\u8ecc\u9053\u3092\u63cf\u304f<\/h4>\n
$\\theta = 45^{\\circ}$ \u3067\u306e\u659c\u65b9\u6295\u5c04\u306e\u8ecc\u9053\u3092\u30b0\u30e9\u30d5\u306b\u3057\u3066\u307f\u308b\u3002<\/p>\n
\u307e\u305a\u306f\uff0c\u3068\u308a\u3042\u3048\u305a\u306e\u30b0\u30e9\u30d5\uff1a<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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In\u00a0[3]:<\/div>\n
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# \u03b8 = 45\u00b0 \u306e\u30b0\u30e9\u30d5<\/span>\r\nth<\/span> =<\/span> 45<\/span>\r\n\r\nplot_parametric<\/span>(<\/span>\r\n    x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> use_cm<\/span>=<\/span>False<\/span>)<\/span>;<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u4f8b<\/h4>\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\u3057\u3066\uff0c\u3082\u3046\u5c11\u3057\u4f53\u88c1\u3092\u6574\u3048\u307e\u3059\u3002<\/p>\n
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  • $\\theta$ \u306e\u5024\u3092\u51e1\u4f8b\u306b<\/li>\n
  • \u5ea7\u6a19\u8ef8\u306e\u30e9\u30d9\u30eb\u3068\u30b0\u30e9\u30d5\u306e\u30bf\u30a4\u30c8\u30eb<\/li>\n
  • \u6a2a\u8ef8\u7e26\u8ef8\u306e\u8868\u793a\u7bc4\u56f2<\/li>\n
  • \u7e26\u8ef8\u6a2a\u8ef8\u306e\u30a2\u30b9\u30da\u30af\u30c8\u6bd4<\/li>\n
  • \uff08\u5ea7\u6a19\u8ef8\u306e\u76ee\u76db\u306e\u9593\u9694… \uff09<\/li>\n<\/ul>\n
    \u3053\u3053\u3067\u306f\uff0cplot_parametric()<\/code> \u306e\u4e2d\u3067\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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    In\u00a0[4]:<\/div>\n
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    # \u03b8 = 45\u00b0 \u306e\u30b0\u30e9\u30d5<\/span>\r\nth<\/span> =<\/span> 45<\/span>\r\n\r\nplot_parametric<\/span>(<\/span>\r\n    x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> th<\/span>,<\/span> \r\n    legend<\/span> =<\/span> True<\/span>,<\/span>\r\n    use_cm<\/span> =<\/span> False<\/span>,<\/span> \r\n    xlabel<\/span> =<\/span> \"X\"<\/span>,<\/span> ylabel<\/span> =<\/span> \"Y\"<\/span>,<\/span> title<\/span> =<\/span> \"\u659c\u65b9\u6295\u5c04\"<\/span>,<\/span>\r\n    xlim<\/span> =<\/span> (<\/span>0<\/span>,<\/span> 1.1<\/span>),<\/span> ylim<\/span> =<\/span> (<\/span>0<\/span>,<\/span> 0.5<\/span>),<\/span> \r\n    aspect<\/span> =<\/span> \"equal\"<\/span>)<\/span>;<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    \"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    2 \u672c\u306e\u8ecc\u9053\u3092\u63cf\u304f<\/h4>\n
    $\\theta = 30^{\\circ}$ \u3068 $\\theta = 45^{\\circ}$ \u306e2\u672c\u306e\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u4f8b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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    In\u00a0[5]:<\/div>\n
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    plot_parametric<\/span>(<\/span>\r\n    (<\/span>x<\/span>(<\/span>t<\/span>,<\/span> 45<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> 45<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>45<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> 45<\/span>),<\/span> \r\n    (<\/span>x<\/span>(<\/span>t<\/span>,<\/span> 30<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> 30<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>30<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> 30<\/span>),<\/span> \r\n    legend<\/span> =<\/span> True<\/span>,<\/span>\r\n    use_cm<\/span> =<\/span> False<\/span>,<\/span> \r\n    xlabel<\/span> =<\/span> \"X\"<\/span>,<\/span> ylabel<\/span> =<\/span> \"Y\"<\/span>,<\/span> title<\/span> =<\/span> \"\u659c\u65b9\u6295\u5c04\"<\/span>,<\/span>\r\n    xlim<\/span> =<\/span> (<\/span>0<\/span>,<\/span> 1.1<\/span>),<\/span> ylim<\/span> =<\/span> (<\/span>0<\/span>,<\/span> 0.5<\/span>),<\/span> \r\n    aspect<\/span> =<\/span> \"equal\"<\/span>)<\/span>;<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    \"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    2 \u672c\u306e\u8ecc\u9053\u3092\u63cf\u304f\u5225\u306e\u4f8b<\/h4>\n
    $\\theta = 30^{\\circ}$ \u3068 $\\theta = 45^{\\circ}$ \u306e2\u672c\u306e\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u3082\u3046\u4e00\u3064\u306e\u65b9\u6cd5\u3002
    \np1<\/code>\uff0cp2<\/code> \u3068\u3057\u3066\u5225\u3005\u306b\u63cf\u3044\u305f\u30b0\u30e9\u30d5\u3092<\/p>\n
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    p<\/span> =<\/span> p1<\/span> +<\/span> p2<\/span>\r\np<\/span>.<\/span>show<\/span>()<\/span>\r\n<\/pre>\n<\/div>\n
    \u3068\u3057\u3066\u91cd\u306d\u3066\u8868\u793a\u3055\u305b\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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    In\u00a0[6]:<\/div>\n
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    th<\/span> =<\/span> 45<\/span>\r\np1<\/span> =<\/span> plot_parametric<\/span>(<\/span>\r\n    (<\/span>x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> th<\/span>),<\/span> \r\n    xlabel<\/span> =<\/span> \"X\"<\/span>,<\/span> ylabel<\/span> =<\/span> \"Y\"<\/span>,<\/span> title<\/span> =<\/span> \"\u659c\u65b9\u6295\u5c04\"<\/span>,<\/span>\r\n    xlim<\/span> =<\/span> (<\/span>0<\/span>,<\/span> 1.1<\/span>),<\/span> ylim<\/span> =<\/span> (<\/span>0<\/span>,<\/span> 0.5<\/span>),<\/span> \r\n    use_cm<\/span> =<\/span> False<\/span>,<\/span> aspect<\/span> =<\/span> \"equal\"<\/span>,<\/span> show<\/span> =<\/span> False<\/span>)<\/span>\r\n\r\nth<\/span> =<\/span> 30<\/span>\r\np2<\/span> =<\/span> plot_parametric<\/span>(<\/span>\r\n    (<\/span>x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> th<\/span>),<\/span> \r\n    use_cm<\/span> =<\/span> False<\/span>,<\/span> show<\/span> =<\/span> False<\/span>)<\/span>\r\n\r\np<\/span> =<\/span> p1<\/span> +<\/span> p2<\/span>\r\np<\/span>.<\/span>show<\/span>()<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    \"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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    \u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u306e\u5225\u306e\u4f8b<\/h4>\n
    \u3053\u3053\u3067\u306f\uff0cax<\/code> \u3092\u8a2d\u5b9a\u3057\u3066\uff0c\u3088\u308a\u7d30\u304b\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u3092\u884c\u3063\u3066\u307f\u307e\u3059\u3002\u3044\u3063\u305f\u3093 ax<\/code> \u3092\u8a2d\u5b9a\u3057\u3066\u3057\u307e\u3048\u3070\uff0c\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e Matplotlib \u3068\u540c\u3058\u65b9\u6cd5\u3067\u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
    SymPy Plotting Backends \u306e\u95a2\u6570\u3067\u3042\u308b plot_parametric()<\/code> \u306e\u5f15\u6570\u3068\u3057\u3066\u8a2d\u5b9a\u3067\u304d\u306a\u3044\u30aa\u30d7\u30b7\u30e7\u30f3\u3082\uff0cax.___<\/code> \u3067\u7d30\u304b\u306a\u8a2d\u5b9a\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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    In\u00a0[7]:<\/div>\n
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    \n
    \n
    th<\/span> =<\/span> 45<\/span>\r\np1<\/span> =<\/span> plot_parametric<\/span>(<\/span>\r\n    (<\/span>x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> th<\/span>),<\/span> \r\n    use_cm<\/span> =<\/span> False<\/span>,<\/span> show<\/span> =<\/span> False<\/span>)<\/span>\r\n\r\nth<\/span> =<\/span> 30<\/span>\r\np2<\/span> =<\/span> plot_parametric<\/span>(<\/span>\r\n    (<\/span>x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> th<\/span>),<\/span> \r\n    use_cm<\/span> =<\/span> False<\/span>,<\/span> show<\/span> =<\/span> False<\/span>)<\/span>\r\n\r\np<\/span> =<\/span> p1<\/span> +<\/span> p2<\/span>\r\nfig<\/span>,<\/span> ax<\/span> =<\/span> p<\/span>.<\/span>fig<\/span>,<\/span> p<\/span>.<\/span>ax<\/span>\r\n# \u30b0\u30e9\u30d5\u306e\u30b5\u30a4\u30ba\u304c\u5fae\u5999\u306b\u5c0f\u3055\u304f\u306a\u308b\u306e\u3092\u9632\u3050<\/span>\r\nfig<\/span>.<\/span>tight_layout<\/span>()<\/span>\r\n# \u3044\u3063\u305f\u3093 ax \u3092\u5b9a\u7fa9\u3059\u308c\u3070\u3088\u308a\u7d30\u304b\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u304c\u53ef\u80fd<\/span>\r\nax<\/span>.<\/span>set_aspect<\/span>(<\/span>'equal'<\/span>)<\/span>\r\nax<\/span>.<\/span>set_xlim<\/span>(<\/span>0<\/span>,<\/span> 1.1<\/span>)<\/span>\r\nax<\/span>.<\/span>set_ylim<\/span>(<\/span>0<\/span>,<\/span> 0.5<\/span>)<\/span>\r\nax<\/span>.<\/span>set_xlabel<\/span>(<\/span>\"X\"<\/span>)<\/span>\r\nax<\/span>.<\/span>set_ylabel<\/span>(<\/span>\"Y\"<\/span>)<\/span>\r\nax<\/span>.<\/span>set_title<\/span>(<\/span>\"\u659c\u65b9\u6295\u5c04\"<\/span>)<\/span>\r\n# \u30b0\u30ea\u30c3\u30c9\u3092 dotted \u3067<\/span>\r\nax<\/span>.<\/span>grid<\/span>(<\/span>linestyle<\/span> =<\/span> 'dotted'<\/span>)<\/span>\r\n# x \u306e\u76ee\u76db\u3092 0.1 \u523b\u307f\u306b<\/span>\r\nax<\/span>.<\/span>set_xticks<\/span>([<\/span>0.1<\/span>*<\/span>i<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>11<\/span>)])<\/span>\r\n# y \u306e\u76ee\u76db\u3092 0.1 \u523b\u307f\u306b<\/span>\r\nax<\/span>.<\/span>set_yticks<\/span>([<\/span>0.1<\/span>*<\/span>i<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>6<\/span>)])<\/span>\r\nax<\/span>.<\/span>legend<\/span>();<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    \n
    \n
    <\/div>\n
    \n
    <\/p>\n
    \"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    <\/div>\n
    \n
    \n
    \u8907\u6570\u306e\u8ecc\u9053\u3092\u4e00\u5ea6\u306b\u63cf\u304f<\/h4>\n
    $\\theta$ \u306e\u5024\u3092 $30^{\\circ}$ \u304b\u3089 $60^{\\circ}$ \u307e\u3067 $5^{\\circ}$ \u523b\u307f\u3067\u5909\u3048\u3066\uff0c\u8907\u6570\u306e\u66f2\u7dda\u3092\u4e00\u5ea6\u306b\u63cf\u304f\u4f8b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    \n
    In\u00a0[8]:<\/div>\n
    \n
    \n
    \n
    thl<\/span> =<\/span> [<\/span>th<\/span> for<\/span> th<\/span> in<\/span> range<\/span>(<\/span>60<\/span>,<\/span>29<\/span>,<\/span>-<\/span>5<\/span>)]<\/span>\r\n\r\nplots<\/span> =<\/span> [<\/span>plot_parametric<\/span>(<\/span>\r\n           x<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> y<\/span>(<\/span>t<\/span>,<\/span> th<\/span>),<\/span> (<\/span>t<\/span>,<\/span> 0<\/span>,<\/span> td<\/span>(<\/span>th<\/span>)),<\/span> '\u03b8 = <\/span>%2d<\/span>\u00b0'<\/span> %<\/span> th<\/span>,<\/span> \r\n           use_cm<\/span> =<\/span> False<\/span>,<\/span> show<\/span> =<\/span> False<\/span>)<\/span> \r\n         for<\/span> th<\/span> in<\/span> thl<\/span>]<\/span>\r\n\r\np<\/span> =<\/span> sum<\/span>(<\/span>plots<\/span>)<\/span>\r\nfig<\/span>,<\/span> ax<\/span> =<\/span> p<\/span>.<\/span>fig<\/span>,<\/span> p<\/span>.<\/span>ax<\/span>\r\n# \u30b0\u30e9\u30d5\u306e\u30b5\u30a4\u30ba\u304c\u5fae\u5999\u306b\u5c0f\u3055\u304f\u306a\u308b\u306e\u3092\u9632\u3050<\/span>\r\nfig<\/span>.<\/span>tight_layout<\/span>()<\/span>\r\nax<\/span>.<\/span>set_aspect<\/span>(<\/span>'equal'<\/span>)<\/span>\r\nax<\/span>.<\/span>set_xlim<\/span>(<\/span>0<\/span>,<\/span> 1.1<\/span>)<\/span>\r\nax<\/span>.<\/span>set_ylim<\/span>(<\/span>0<\/span>,<\/span> 0.5<\/span>)<\/span>\r\nax<\/span>.<\/span>set_xlabel<\/span>(<\/span>\"X\"<\/span>)<\/span>\r\nax<\/span>.<\/span>set_ylabel<\/span>(<\/span>\"Y\"<\/span>)<\/span>\r\nax<\/span>.<\/span>set_title<\/span>(<\/span>\"\u659c\u65b9\u6295\u5c04\"<\/span>)<\/span>\r\n# \u30b0\u30ea\u30c3\u30c9\u3092 dotted \u3067<\/span>\r\nax<\/span>.<\/span>grid<\/span>(<\/span>linestyle<\/span> =<\/span> 'dotted'<\/span>)<\/span>\r\n# x \u306e\u76ee\u76db\u3092 0.1 \u523b\u307f\u306b<\/span>\r\nax<\/span>.<\/span>set_xticks<\/span>([<\/span>0.1<\/span>*<\/span>i<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>11<\/span>)])<\/span>\r\n# y \u306e\u76ee\u76db\u3092 0.1 \u523b\u307f\u306b<\/span>\r\nax<\/span>.<\/span>set_yticks<\/span>([<\/span>0.1<\/span>*<\/span>i<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>6<\/span>)])<\/span>\r\nax<\/span>.<\/span>legend<\/span>();<\/span>\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    \n
    \n
    <\/div>\n
    \n
    <\/p>\n
    \"\"<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    Python \u306e SymPy Plotting Backends \u3092\u4f7f\u3063\u3066\uff0c\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5909\u3048\u3066\u8907\u6570\u306e\u66f2\u7dda\u3092\u4e00\u6c17\u306b\u30b0\u30e9\u30d5\u306b\u3059\u308b\u4f8b\u3002\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u969b\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u30822\u901a\u308a\u306e\u4f8b\u3092\u307e\u3068\u3081\u305f\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":[12],"tags":[],"class_list":["post-7573","post","type-post","status-publish","format-standard","hentry","category-sympy","nodate","item-wrap"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/7573","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=7573"}],"version-history":[{"count":6,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/7573\/revisions"}],"predecessor-version":[{"id":7615,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/posts\/7573\/revisions\/7615"}],"wp:attachment":[{"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/media?parent=7573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/categories?post=7573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/home.hirosaki-u.ac.jp\/relativity\/wp-json\/wp\/v2\/tags?post=7573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}