如何控制 Python Plotly 饼图的分段顺序

Question

我在 Plotly.go 中绘制了一对简单的饼图。我已经按照我想要的顺序订购了值和标签（即标签 - 从低到高）。当我制作情节时，顺序被打乱了。我已经通读了 Plotly 文档和示例，但我无法找到如何修复排序。作为第二个问题，如何消除 stick/spik？显示零标签。

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

labels = ["0","0.5", "1","1.5", "2","2.5", "3","3.5", "4","4.5", "5","5.5","6"]

# Create subplots: use 'domain' type for Pie subplot
fig = make_subplots(rows=1, cols=2, specs=[[{'type':'domain'}, {'type':'domain'}]])

fig.add_trace(go.Pie(labels=labels, values=[0,0,3,0,4,0,1,0,1,0,0,0,0], name="Wind Force",textinfo='label'),
              1, 1)
fig.add_trace(go.Pie(labels=labels, values=[0,0,2,1,0,1,3,0,0,1,0,0,1], name="Wave Height",textinfo='label'),
              1, 2)

# Use `hole` to create a donut-like pie chart
fig.update_traces(hole=.4, hoverinfo="label+percent+name")

fig.update_layout(
    title_text="Wind and Wave conditions on site",
    # Add annotations in the center of the donut pies.
    annotations=[dict(text='Wind (Force)', x=0.17, y=0.5, font_size=20, showarrow=False),
                 dict(text='Wave (m)', x=0.82, y=0.5, font_size=20, showarrow=False)])
fig.show()

问题更新：我现在已经编辑了标签和值以删除零值。这显然需要针对每个情节进行编辑，并不是一个通用的答案。

labelsW = ["1", "2", "3", "4"]
labelsS = ["1","1.5","2.5", "3","4.5","6"]

# Create subplots: use 'domain' type for Pie subplot
fig = make_subplots(rows=1, cols=2, specs=[[{'type':'domain'}, {'type':'domain'}]])

fig.add_trace(go.Pie(labels=labelsW, values=[3,4,1,1], name="Waver Height",textinfo='label', direction='clockwise', sort=False),
          1, 1)
fig.add_trace(go.Pie(labels=labelsS, values=[2,1,1,3,1,1], name="Wind Force",textinfo='label', direction='clockwise', sort=False),1,2)

Answer 1

第一个问题我可以肯定回答，但第二个答案可能不太令人满意

1.) 要按照您提供的方式包含订单，请将这 2 个参数传递给 go.Pie() class（方向和排序);

fig.add_trace(go.Pie(labels=labels, values=[0,0,3,0,4,0,1,0,1,0,0,0,0], name="Wind Force",textinfo='label', direction='clockwise', sort=False),
          1, 1)
fig.add_trace(go.Pie(labels=labels, values=[0,0,2,1,0,1,3,0,0,1,0,0,1], name="Wave Height",textinfo='label', direction='clockwise', sort=False),
              1, 2)

注意：您可能想设置 sort=True，看看它是否比 sort=False 更适合您。

2.) 将参数 textinfo 更改为 'none' 将删除所有标签。这就是为什么我注意到这可能不是一个完全令人满意的答案，因为它不仅会从零中删除标签，还会从所有其他条目中删除标签。

fig.add_trace(go.Pie(labels=labels, values=[0,0,3,0,4,0,1,0,1,0,0,0,0], name="Wind Force",textinfo='none', direction='clockwise', sort=False),
          1, 1)
fig.add_trace(go.Pie(labels=labels, values=[0,0,2,1,0,1,3,0,0,1,0,0,1], name="Wave Height",textinfo='none', direction='clockwise', sort=False),
              1, 2)

我希望至少第一部分对您有所帮助。

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