绘图对象：显示悬停信息不起作用

如何解决绘图对象：显示悬停信息不起作用

如何将“值”列中的悬停信息添加到该图中？

import plotly-graph_objects as go

fig = go.Figure()

fig.add_trace(go.Scatter(x = df.category,y = df.type,mode='markers',marker={"color": df.value,"colorscale": 'Sunsetdark',"size": df["size"],"showscale": True}
                        ),)

我的数据框如下：

  category          value       type          size
8        B        95890.0          A     19.171122
35       G        95890.0          B     22.312869
67       V        4113.75          C     20.188301
          .
          .
          .

我尝试将参数hoverinfo = df.value传递给go.Scatter()，但这不起作用。它可以使用plotly express，但是我想使用plotly graph对象。错误提示（无效元素是我df的前10个）：

ValueError: 
    Invalid element(s) received for the 'hoverinfo' property of scatter
        Invalid elements include: [95890.0,69910.0,4113.75,40450.0,77530.0,67470.0,97660.03,644340.03,79488.89,45591.7399999998]

    The 'hoverinfo' property is a flaglist and may be specified
    as a string containing:
      - Any combination of ['x','y','z','text','name'] joined with '+' characters
        (e.g. 'x+y')
        OR exactly one of ['all','none','skip'] (e.g. 'skip')
      - A list or array of the above

解决方法

您可以将df.value设置为text，然后设置hoverinfo='text'。请注意，由于您设置了mode='markers'，所以绘图本身不会显示任何文本。下面根据您的代码提供了一个示例。

import plotly.graph_objects as go
import pandas as pd

df = pd.DataFrame({'category': ['B','G','V'],'value': [95890.0,95890.0,4113.75],'type': ['A','B','C'],'size': [19.171122,22.312869,20.188301]})

fig = go.Figure()

fig.add_trace(go.Scatter(x=df.category,y=df.type,text=df.value,hoverinfo='text',mode='markers',marker={'color': df.value,'colorscale': 'Sunsetdark','size': df.size,'showscale': True}))

fig.show()