如何在单个栏中绘制时间线？答案

【问题标题】：How to plot timeline in a single bar?如何在单个栏中绘制时间线？
【发布时间】：2021-12-08 13:05:24
【问题描述】：

我正在尝试绘制时间线图，但它们相互堆叠。

import pandas as pd
import plotly.express as pex

d1 = dict(Start= '2021-10-10 02:00:00', Finish = '2021-10-10 09:00:00', Task = 'Sleep')
d2 = dict(Start= '2021-10-10 09:00:00', Finish = '2021-10-10 09:30:00', Task = 'EAT')
d3 = dict(Start= '2021-10-10 09:30:00', Finish = '2021-10-10 12:00:00', Task = 'Study')
d4 = dict(Start= '2021-10-10 12:00:00', Finish = '2021-10-10 16:00:00', Task = 'Work')
d5 = dict(Start= '2021-10-10 16:00:00', Finish = '2021-10-10 16:50:00', Task = 'EAT')
d6 = dict(Start= '2021-10-10 17:00:00', Finish = '2021-10-10 20:00:00', Task = 'Study')
d8 = dict(Start= '2021-10-10 20:00:00', Finish = '2021-10-10 20:40:00', Task = 'EAT')
d7 = dict(Start= '2021-10-10 21:00:00', Finish = '2021-10-11 05:00:00', Task = 'Sleep')

df = pd.DataFrame([d1,d2,d3,d4,d5,d6,d7,d8])

我的 DataFrame(df) 是：

gantt = pex.timeline(df, x_start='Start', x_end = 'Finish', color = 'Task', height=300)
gantt.show()

这是我得到的图表。但我不希望他们堆叠。我希望它们在一行中（不会有任何重叠的间隔）。我如何做到这一点？

【问题讨论】：

标签： python pandas graph plotly gantt-chart

【解决方案1】：

根据documentation，您可以使用y参数并提供一个大小等于df中的行数且所有元素相等的array_like对象。

所以，一种方法（使用空字符串 '' 导致绘图没有 y-axis 范围）：

gantt = pex.timeline(df, x_start='Start', x_end = 'Finish', color = 'Task', height=300, y=['']*df.shape[0])

【讨论】：

非常感谢！像魅力一样工作。

【解决方案2】：

试试这个

import pandas as pd
import plotly.express as pex

d1 = dict(stack=1, start='2021-10-10 02:00:00', finish='2021-10-10 09:00:00', task='Sleep')
d2 = dict(stack=1, start='2021-10-10 09:00:00', finish='2021-10-10 09:30:00', task='EAT')
d3 = dict(stack=1, start='2021-10-10 09:30:00', finish='2021-10-10 12:00:00', task='Study')
d4 = dict(stack=1, start='2021-10-10 12:00:00', finish='2021-10-10 16:00:00', task='Work')
d5 = dict(stack=1, start='2021-10-10 16:00:00', finish='2021-10-10 16:50:00', task='EAT')
d6 = dict(stack=1, start='2021-10-10 17:00:00', finish='2021-10-10 20:00:00', task='Study')
d8 = dict(stack=1, start='2021-10-10 20:00:00', finish='2021-10-10 20:40:00', task='EAT')
d7 = dict(stack=1, start='2021-10-10 21:00:00', finish='2021-10-11 05:00:00', task='Sleep')

df = pd.DataFrame([d1,d2,d3,d4,d5,d6,d7,d8])

gantt = pex.timeline(df, x_start='start', x_end='finish', y='stack', color='task', height=300)
gantt

【讨论】：

这也有效。谢谢！