{"id":440,"date":"2021-02-28T20:22:25","date_gmt":"2021-02-28T14:22:25","guid":{"rendered":"http:\/\/www.jichangqing.net\/wordpress\/?p=440"},"modified":"2021-02-28T20:22:25","modified_gmt":"2021-02-28T14:22:25","slug":"%e7%94%a8networkx%e7%bb%98%e5%88%b6%e5%b8%a6%e9%a2%9c%e8%89%b2%e6%b8%90%e5%8f%98%e7%9a%84%e6%9c%89%e5%90%91%e5%9b%be","status":"publish","type":"post","link":"http:\/\/www.jichangqing.net\/wordpress\/?p=440","title":{"rendered":"\u7528networkx\u7ed8\u5236\u5e26\u989c\u8272\u6e10\u53d8\u7684\u6709\u5411\u56fe"},"content":{"rendered":"

\u7528networkx\u7ed8\u5236\u5e26\u989c\u8272\u6e10\u53d8\u7684\u6709\u5411\u56fe<\/h1>\n

Draw a graph with directed edges using a colormap and different node sizes.<\/p>\n

Edges have different colors and alphas (opacity). Drawn using matplotlib.<\/p>\n

\"plot<\/p>\n

\n
\n
import<\/span> matplotlib<\/span> as<\/span> mpl<\/span>\r\nimport<\/span> matplotlib.pyplot<\/span> as<\/span> plt<\/span>\r\nimport<\/span> networkx<\/span> as<\/span> nx<\/span>\r\n\r\nseed<\/a> =<\/span> 13648<\/span>  # Seed random number generators for reproducibility<\/span>\r\nG<\/span> =<\/span> nx<\/span>.<\/span>random_k_out_graph<\/span>(<\/span>10<\/span>,<\/span> 3<\/span>,<\/span> 0.5<\/span>,<\/span> seed<\/a>=<\/span>seed<\/a>)<\/span>\r\npos<\/a> =<\/span> nx<\/span>.<\/span>spring_layout<\/span>(<\/span>G<\/span>,<\/span> seed<\/a>=<\/span>seed<\/a>)<\/span>\r\n\r\nnode_sizes<\/a> =<\/span> [<\/span>3<\/span> +<\/span> 10<\/span> *<\/span> i<\/a> for<\/span> i<\/a> in<\/span> range<\/span>(<\/span>len<\/span>(<\/span>G<\/span>))]<\/span>\r\nM<\/a> =<\/span> G<\/span>.<\/span>number_of_edges<\/span>()<\/span>\r\nedge_colors<\/a> =<\/span> range<\/span>(<\/span>2<\/span>,<\/span> M<\/a> +<\/span> 2<\/span>)<\/span>\r\nedge_alphas<\/a> =<\/span> [(<\/span>5<\/span> +<\/span> i<\/a>)<\/span> \/<\/span> (<\/span>M<\/a> +<\/span> 4<\/span>)<\/span> for<\/span> i<\/a> in<\/span> range<\/span>(<\/span>M<\/a>)]<\/span>\r\ncmap<\/a> =<\/span> plt<\/span>.<\/span>cm<\/span>.<\/span>plasma<\/span><\/a>\r\n\r\nnodes<\/a> =<\/span> nx<\/span>.<\/span>draw_networkx_nodes<\/span>(<\/span>G<\/span>,<\/span> pos<\/a>,<\/span> node_size<\/span>=<\/span>node_sizes<\/a>,<\/span> node_color<\/span>=<\/span>\"indigo\"<\/span>)<\/span>\r\nedges<\/a> =<\/span> nx<\/span>.<\/span>draw_networkx_edges<\/span>(<\/span>\r\n    G<\/span>,<\/span>\r\n    pos<\/a>,<\/span>\r\n    node_size<\/span>=<\/span>node_sizes<\/a>,<\/span>\r\n    arrowstyle<\/span>=<\/span>\"->\"<\/span>,<\/span>\r\n    arrowsize<\/span>=<\/span>10<\/span>,<\/span>\r\n    edge_color<\/span>=<\/span>edge_colors<\/a>,<\/span>\r\n    edge_cmap<\/span>=<\/span>cmap<\/a>,<\/span>\r\n    width<\/span>=<\/span>2<\/span>,<\/span>\r\n)<\/span>\r\n# set alpha value for each edge<\/span>\r\nfor<\/span> i<\/a> in<\/span> range<\/span>(<\/span>M<\/a>):<\/span>\r\n    edges<\/a>[<\/span>i<\/a>]<\/span>.<\/span>set_alpha<\/span>(<\/span>edge_alphas<\/a>[<\/span>i<\/a>])<\/span>\r\n\r\npc<\/a> =<\/span> mpl<\/span>.<\/span>collections<\/span>.<\/span>PatchCollection<\/span><\/a>(<\/span>edges<\/a>,<\/span> cmap<\/a>=<\/span>cmap<\/a>)<\/span>\r\npc<\/span>.<\/span>set_array<\/span><\/a>(<\/span>edge_colors<\/a>)<\/span>\r\nplt<\/span>.<\/span>colorbar<\/span><\/a>(<\/span>pc<\/a>)<\/span>\r\n\r\nax<\/span> =<\/span> plt<\/span>.<\/span>gca<\/span><\/a>()<\/span>\r\nax<\/span>.<\/span>set_axis_off<\/span><\/a>()<\/span>\r\nplt<\/span>.<\/span>show<\/span><\/a>()<\/span><\/pre>\n<\/div>\n<\/div>\n
from: https:\/\/networkx.org\/documentation\/latest\/auto_examples\/drawing\/plot_directed.html#sphx-glr-auto-examples-drawing-plot-directed-py<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7528networkx\u7ed8\u5236\u5e26\u989c\u8272\u6e10\u53d8\u7684\u6709\u5411\u56fe Draw a graph with directed edges using a colormap and different node sizes. Edges have different co …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-440","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=440"}],"version-history":[{"count":1,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/440\/revisions"}],"predecessor-version":[{"id":441,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/440\/revisions\/441"}],"wp:attachment":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=440"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}