Python Plotly 散极悬停模式

Question

I'm new to Python and programming in general. Using Jupyter Notebooks, I made a Scatterpolar plot with two traces on it. When I hover my mouse over the plot, it shows me the data for one of the traces (the one that my mouse is closest to). But I want to see the data for both traces. How do I do that? I can do it with a regular Scatter plot by changing the "hovermode" to "x." But it doesn't work with Scatterpolar plots. The other options for hovermode didn't work for me either.

As an example, I put some simpler code here to illustrate the issue:

import numpy as np
from plotly.offline import iplot
import plotly.graph_objs as go

th = np.arange(0, 361, 1)
r1 = np.random.randn(360)
r2 = np.random.randn(360)

fig = go.Figure()
fig.add_trace(go.Scatterpolar(r=r1, theta=th, mode='lines'))
fig.add_trace(go.Scatterpolar(r=r2, theta=th, mode='lines'))
fig.update_layout(hovermode='x unified')

Using the above code in a Jupyter Notebook, I get two messy traces on a polar plot, and when I hover my mouse over it I only see data for one of the traces. I want to see the data for both traces. Any help would be greatly appreciated. Thanks so much!

Answer 1

I don't know if I fully comprehended your final objective, but the first thing you can do to make the scatter plots less messy, is to make the change mode='markers' . By default, a single hover label will appear for the point underneath the cursor, so if you hover over a point with (r1, th) coordinates these will show in the label, with the same happening for points with (r2, th). Now for the case you presented, the line fig.update_layout(hovermode='x unified') doesn't make any difference to the result.