来自plotly的三元图

在此输入图像描述 https://i.stack.imgur.com/lyUJu.png

我想在三元图中添加线条（水平、垂直）以突出显示某些部分。 可以帮我吗？

三元图

代码如下：

fig = px.scatter_ternary(df,a=df.a, b =df.b, c=df.c, symbol=data_small.Time,
                         color = df.x, size_max = 'size', opacity = [1,1], title=s,
                        symbol_sequence = [1,0])
fig.update_layout({
'ternary':
    {'sum':1,
    'aaxis':{'title': ' a<br>', 'min': 0, 
             'linewidth':2, 'ticks':'outside',
             'tickmode':'array','tickvals':[0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9]},
    'baxis':{'title': '<br>b', 'min': 0, 
             'linewidth':2, 'ticks':'outside',
             'tickmode':'array','tickvals':[0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9]},
    'caxis':{'title': '<br>c', 'min': 0, 
             'linewidth':2, 'ticks':'outside',
             'tickmode':'array','tickvals':[0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9]}}})
fig.show()

我从来没有使用过这种类型的图表，但自从官方参考 https://plotly.com/python/ternary-plots/#ternary-scatter-plot-with-plotly-graph-objects画了一个圆，我觉得也可以画一条线，所以就自定义了。简而言之，它是 px.scatter_ternary+go.Scatterternary 的组合。我无法回答有关坐标的询问。

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

df = px.data.election()
fig = px.scatter_ternary(df, a="Joly", b="Coderre", c="Bergeron", hover_name="district",
    color="winner", size="total", size_max=15,
    color_discrete_map = {"Joly": "blue", "Bergeron": "green", "Coderre":"red"} )

fig.add_trace(
    go.Scatterternary(a=[0.1, 0.5],
                      b=[0.9, 0.5],
                      c=[0.1, 0.4],
                      mode='lines',
                      marker=dict(color='purple'),
                      line=dict(width=4),
                      showlegend=False)
)

fig.show()