Plotly：增加图形尺寸，为长脚注腾出空间

Question

基于此线程中的示例，我有以下代码：

import plotly.express as px
import plotly.graph_objects as go
import pandas as pd

df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/finance-charts-apple.csv')

fig = go.Figure(go.Scatter(x=df['Date'], y=df['AAPL.High']))

fig.update_xaxes(rangeslider_visible=True)

note = 'NYSE Trading Days After Announcement<br>Source:<a href="https://www.nytimes.com/"">The NY TIMES</a> Data: <a href="https://www.yahoofinance.com/">Yahoo! Finance</a><br>NYSE Trading Days After Announcement<br>Source:<a href="https://www.nytimes.com/"">The NY TIMES</a> Data: <a href="https://www.yahoofinance.com/">Yahoo! Finance</a><br>NYSE Trading Days After Announcement<br>Source:<a href="https://www.nytimes.com/"">The NY TIMES</a> Data: <a href="https://www.yahoofinance.com/">Yahoo! Finance</a><br>NYSE Trading Days After Announcement<br>Source:<a href="https://www.nytimes.com/"">The NY TIMES</a> Data: <a href="https://www.yahoofinance.com/">Yahoo! Finance</a>'
fig.add_annotation(
    showarrow=False,
    text=note,
    font=dict(size=10), 
    xref='paper',
    x=0,
    yref='paper',
    y=-1.5
    )

fig.show()

注释太长，无法放入图中，因此被截断。有没有办法在图的底部添加空间以便注释适合？

Answer 1

你可以这样做：

import plotly.graph_objects as go
import pandas as pd

df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/finance-charts-apple.csv')

fig = go.Figure(go.Scatter(x=df['Date'], y=df['AAPL.High']))

fig.update_xaxes(rangeslider_visible=True)

note = ('NYSE Trading Days After Announcement<br>'
        'Source:<a href="https://www.nytimes.com/">The NY TIMES</a> '
        'Data: <a href="https://www.yahoofinance.com/">Yahoo! Finance</a><br>'
  )

fig.add_annotation(
    showarrow=False,
    text=note,
    font=dict(size=10), 
    xref='paper',
    x=0,
    yref='paper',
    y=-1.5
)

fig.update_layout(
    margin=dict(l=50, r=50, t=50, b=200) 
)

fig.show()

这给出了

[![在此处输入图像描述][1]][1]

您当然可以根据自己的喜好调整大小和位置。 [1]：https://i.sstatic.net/161p2n3L.png