matplotlib - 如何使 mpld3 与 seaborn 一起工作(交互式工具提示)

Question

我似乎无法获得由 mpld3 提供支持的交互式工具提示来处理来自 seaborn 的奇妙的类似 lmplot 的散点图。

我很想知道如何让它发挥作用!谢谢!

示例代码:

# I'm running this in an ipython notebook.
%matplotlib inline
import matplotlib.pyplot as plt, mpld3
mpld3.enable_notebook()
import seaborn as sns


N=10
data = pd.DataFrame({"x": np.random.randn(N),
                     "y": np.random.randn(N), 
                     "size": np.random.randint(20,200, size=N),
                     "label": np.arange(N)
                     })


scatter_sns = sns.lmplot("x", "y", 
           scatter_kws={"s": data["size"]},
           robust=False, # slow if true
           data=data, size=8)
fig = plt.gcf()

tooltip = mpld3.plugins.PointLabelTooltip(fig, labels=list(data.label))
mpld3.plugins.connect(fig, tooltip)

mpld3.display(fig)

我得到了seaborn图并出现以下错误:

Javascript error adding output!
TypeError: obj.elements is not a function
See your browser Javascript console for more details.

控制台显示:

TypeError: obj.elements is not a function
    at mpld3_TooltipPlugin.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1161:9)
    at mpld3_Figure.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1400:23)
    at Object.mpld3.draw_figure (https://mpld3.github.io/js/mpld3.v0.2.js:18:9)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:14:14)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:15:5)
    at eval (native)
    at Function.x.extend.globalEval (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231)
    at x.fn.extend.domManip (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:21253)
    at x.fn.extend.append (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:18822)
    at OutputArea._safe_append (https://mbcomp1:9999/static/notebook/js/outputarea.js:336:26)
outputarea.js:319 Javascript error adding output! TypeError: obj.elements is not a function
    at mpld3_TooltipPlugin.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1161:9)
    at mpld3_Figure.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1400:23)
    at Object.mpld3.draw_figure (https://mpld3.github.io/js/mpld3.v0.2.js:18:9)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:14:14)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:15:5)
    at eval (native)
    at Function.x.extend.globalEval (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231)
    at x.fn.extend.domManip (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:21253)
    at x.fn.extend.append (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:18822)
    at OutputArea._safe_append (https://mbcomp1:9999/static/notebook/js/outputarea.js:336:26)
outputarea.js:338 TypeError: obj.elements is not a function
    at mpld3_TooltipPlugin.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1161:9)
    at mpld3_Figure.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1400:23)
    at Object.mpld3.draw_figure (https://mpld3.github.io/js/mpld3.v0.2.js:18:9)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:14:14)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:15:5)
    at eval (native)
    at Function.x.extend.globalEval (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231)
    at x.fn.extend.domManip (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:21253)
    at x.fn.extend.append (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:18822)
    at OutputArea._safe_append (https://mbcomp1:9999/static/notebook/js/outputarea.js:336:26)
outputarea.js:319 Javascript error adding output! TypeError: obj.elements is not a function
    at mpld3_TooltipPlugin.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1161:9)
    at mpld3_Figure.draw (https://mpld3.github.io/js/mpld3.v0.2.js:1400:23)
    at Object.mpld3.draw_figure (https://mpld3.github.io/js/mpld3.v0.2.js:18:9)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:14:14)
    at eval (eval at <anonymous> (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231), <anonymous>:15:5)
    at eval (native)
    at Function.x.extend.globalEval (https://mbcomp1:9999/static/components/jquery/jquery.min.js:4:4231)
    at x.fn.extend.domManip (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:21253)
    at x.fn.extend.append (https://mbcomp1:9999/static/components/jquery/jquery.min.js:5:18822)
    at OutputArea._safe_append (https://mbcomp1:9999/static/notebook/js/outputarea.js:336:26)

Answer 1

我认为目前没有简单的方法可以做到这一点。我可以通过将 tooltip 构造函数替换为以下内容来显示一些工具提示:

ax = plt.gca()
pts = ax.get_children()[3]
tooltip = mpld3.plugins.PointLabelTooltip(pts, labels=list(data.label))

但这仅适用于不确定性区间之外的点。我认为可以扩展seaborn以使这些点在zorder中最高，并将它们存储在实例中的某个地方，这样你就不需要将它们拉出来轴子列表的。也许值得提出功能请求。