allow boxes of different height on the timeline graph

Hi,

I have a situation where I would like to visualize the burn rate of projects on a timeline. It would be most logical to present this as the height of each box. Currently every row in the timeline graph is of uniform height, and there is no provision for changing the size.

Would it be possible to add a new feature for varying heights within the timeline graph? Something like this (in Plotly Express):

df = pd.DataFrame([
    dict(Task="Project A", Start='2009-01-01', Finish='2009-02-28', Burnrate=200),
    dict(Task="Project B", Start='2009-03-05', Finish='2009-04-15', Burnrate=75),
    dict(Task="Project C", Start='2009-02-20', Finish='2009-05-30', Burnrate=110)
])

fig = px.timeline(df, x_start="Start", x_end="Finish", y="Task", size="Burnrate")
fig.show()

Also, while the boxes can be drawn very slim (low size values), there probably needs to be a minimum row height determined by the label text.

Something similar could probably be built by stacking bar charts or area plots in one facet column, but I think the resulting graph would be too high and might also be visually too complicated.

Cheers,
--Martin

从 Plotly Express 的 timeline 入口点和提供的 Python 示例开始。确定不同的基于 Burnrate 的框高度以及由 label 驱动的最小行高应如何工作，然后通过涵盖不同尺寸的 timeline 示例和测试来验证该功能。