我想更改plotly.express條形圖圖例中項(xiàng)目的順序。例如，我想在此圖上顯示午餐前的晚餐（當(dāng)前行為對(duì)于水平條形圖尤其尷尬，因?yàn)闂l形的順序與圖例順序相反）：import plotly.express as pxdf = px.data.tips()# Sort to put dinner on top.df.sort_values('time', ascending=False, inplace=True)fig = px.bar(df, y='sex', x='total_bill', color='time', barmode='group', orientation='h')fig.update_layout(yaxis={'categoryorder': 'total ascending'})fig.show()
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添加legend={'traceorder': 'reversed'}到update_layout聲明中：
import plotly.express as px
df = px.data.tips()
# Sort to put dinner on top.
df.sort_values('time', ascending=False, inplace=True)
fig = px.bar(df, y='sex', x='total_bill', color='time', barmode='group',
orientation='h')
fig.update_layout(yaxis={'categoryorder': 'total ascending'},
legend={'traceorder': 'reversed'})
fig.show()
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