如何获得详细信息。表示时间轴重叠条可见

Question

我想知道是否有人有重叠时间线栏的解决方案？

import plotly.express as px
import pandas as pd

df = pd.DataFrame([
    dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28', Resource="Alex"),
    dict(Task="Job B", Start='2009-02-25', Finish='2009-04-15', Resource="Alex"),
    dict(Task="Job C", Start='2009-02-23', Finish='2009-05-23', Resource="Max"),
    dict(Task="Job D", Start='2009-02-20', Finish='2009-05-30', Resource="Max")
])

fig = px.timeline(df, x_start="Start", x_end="Finish", y="Resource", color="Resource")
fig.show()

在图像中很难看到：

• 作业A结束/作业B开始的地方
• 作业D根本不可见

有什么建议吗？

Answer 1

我能想到的最好办法是对所有的“任务”或“作业”使用不同的颜色，并且必须降低透明度，以便能够看到被覆盖的痕迹/条

代码如下所示：

import plotly.express as px
import pandas as pd

df = pd.DataFrame([
    dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28', Resource="Alex"),
    dict(Task="Job B", Start='2009-02-25', Finish='2009-04-15', Resource="Alex"),
    dict(Task="Job C", Start='2009-02-23', Finish='2009-05-23', Resource="Max"),
    dict(Task="Job D", Start='2009-02-20', Finish='2009-05-30', Resource="Max")
])

fig = px.timeline(df, x_start="Start", x_end="Finish", y="Resource", color="Task", opacity=0.5)

fig.show()

Answer 2

我经常发现为某些类别分配不同的宽度有助于使整个内容更易于阅读。因此，在您的情况下，我会在您的df中包含一列，其中指定了这一点，然后使用以下方式编辑图形：

for i, d in enumerate(fig.data):
    d.width = df[df['Task']==d.name]['width']

import plotly.express as px
import pandas as pd

resource = ['Alex', 'Max']
df = pd.DataFrame([
    dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28', Resource="Alex", width = 0.5),
    dict(Task="Job B", Start='2009-02-25', Finish='2009-04-15', Resource="Alex", width = 0.2),
    dict(Task="Job C", Start='2009-02-23', Finish='2009-05-23', Resource="Max", width = 0.5),
    dict(Task="Job D", Start='2009-02-20', Finish='2009-05-30', Resource="Max", width = 0.2)
])

fig = px.timeline(df, x_start="Start", x_end="Finish", y="Resource", color="Task")

for i, d in enumerate(fig.data):
    d.width = df[df['Task']==d.name]['width']
fig.show()