Python Plotly Graph Objects 如何将部分子图Y轴设置为百分比格式

你需要给对应位置的子图Y轴单独配置tickformat参数，推荐用指定行列的方式定位子图，不易出错，修改后的完整代码如下：

df = big_df.loc[symbol].tail(20).copy()

from plotly.subplots import make_subplots
import plotly.graph_objects as go

fig = make_subplots(rows=3, cols=2, 
      subplot_titles=("Revenue", "ROIC", "Shares Outstanding", "ROE", "GM %", 'CROCI'))              
fig.update_layout(height=500, width=700,
      title_text=symbol)

fig.add_trace(go.Scatter(x=df['Report Date'], y=df['revenue'], mode='lines+markers', name=symbol), row=1, col=1)
fig.add_trace(go.Scatter(x=df['Report Date'], y=df['ROIC'], mode='lines+markers'), row=1, col=2)
fig.add_trace(go.Scatter(x=df['Report Date'], y=df['shares_(diluted)'], mode='lines+markers'), row=2, col=1)
fig.add_trace(go.Scatter(x=df['Report Date'], y=df['ROE'], mode='lines+markers'), row=2, col=2)
fig.add_trace(go.Scatter(x=df['Report Date'], y=df['gross_margin'], mode='lines+markers'), row=3, col=1)
fig.add_trace(go.Scatter(x=df['Report Date'], y=df['CROCI'], mode='lines+markers'), row=3, col=2)

# 新增以下代码配置指定子图的Y轴格式
# ROIC对应1行2列
fig.update_yaxes(tickformat=',.0%', row=1, col=2)
# ROE对应2行2列
fig.update_yaxes(tickformat=',.0%', row=2, col=2)
# GM%对应3行1列
fig.update_yaxes(tickformat=',.0%', row=3, col=1)
# CROCI对应3行2列
fig.update_yaxes(tickformat=',.0%', row=3, col=2)

fig.update_layout(showlegend=False)

fig.show()

如果你的指标原始值已经是百分比数值（比如15代表15%，而非0.15），把tickformat值改为,.0f%即可避免显示为1500%的问题。

内容的提问来源于stack exchange，提问作者Rockport Redfish