Python可视化神器pyecharts绘制桑基图
目录
- 桑基图
- 桑基图系列模板
- 第一个桑基图
- 复杂桑基图
桑基图
桑基图(Sankey diagram),即桑基能量分流图,也叫桑基能量平衡图。它是一种特定类型的流程图,图中延伸的分支的宽度对应数据流量的大小,通常应用于能源、材料成分、金融等数据的可视化分析。因1898年Matthew Henry Phineas Riall Sankey绘制的“蒸汽机的能源效率图”而闻名,此后便以其名字命名为“桑基图”。
桑基图最明显的特征就是,始末端的分支宽度总和相等,即所有主支宽度的总和应与所有分出去的分支宽度的总和相等,保持能量的平衡。
桑基图系列模板
第一个桑基图
from pyecharts import options as opts from pyecharts.charts import Sankey nodes = [ {"name": "category1"}, {"name": "category2"}, {"name": "category3"}, {"name": "category4"}, {"name": "category5"}, {"name": "category6"}, ] links = [ {"source": "category1", "target": "category2", "value": 10}, {"source": "category2", "target": "category3", "value": 15}, {"source": "category3", "target": "category4", "value": 20}, {"source": "category5", "target": "category6", "value": 25}, ] c = ( Sankey() .add( "sankey", nodes, links, linestyle_opt=opts.LineStyleOpts(opacity=0.2, curve=0.5, color="source"), label_opts=opts.LabelOpts(position="right"), ) .set_global_opts(title_opts=opts.TitleOpts(title="标题")) .render("桑基图.html") )
复杂桑基图
from pyecharts import options as opts from pyecharts.charts import Sankey colors = [ "#67001f", "#b2182b", "#d6604d", "#f4a582", "#fddbc7", "#d1e5f0", "#92c5de", "#4393c3", "#2166ac", "#053061", ] nodes = [ {"name": "a"}, {"name": "b"}, {"name": "a1"}, {"name": "b1"}, {"name": "c"}, {"name": "e"}, ] links = [ {"source": "a", "target": "a1", "value": 5}, {"source": "e", "target": "b", "value": 3}, {"source": "a", "target": "b1", "value": 3}, {"source": "b1", "target": "a1", "value": 1}, {"source": "b1", "target": "c", "value": 2}, {"source": "b", "target": "c", "value": 1}, ] c = ( Sankey() .set_colors(colors) .add( "sankey", nodes=nodes, links=links, pos_bottom="10%", focus_node_adjacency="allEdges", orient="vertical", linestyle_opt=opts.LineStyleOpts(opacity=0.2, curve=0.5, color="source"), label_opts=opts.LabelOpts(position="top"), ) .set_global_opts( title_opts=opts.TitleOpts(title="标题"), tooltip_opts=opts.TooltipOpts(trigger="item", trigger_on="mousemove"), ) .render("复杂桑基图.html") )
这个桑基图的案例已经可以完成你的可视化工作量了,其实一般研究桑基图的还是相对于比较少。
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