Animate n points along y axis given velocity

📊 Plotly Python
4

OK, I figured out how to limit the y coordinate:

import plotly.express as px
import numpy as np
import pandas as pd

# frames for animation
step = 21
frame = np.linspace(0 , 0.1, step)

# data
x = [1 for _ in range(step)]
y = np.asarray([0.1*i for i in range(step)])

# different velocities
faster = y * 2
slower = y / 2

# the slowest point defines the maximum y coordinate
max_y = slower.max()

# limit faster points to y_max
y = [i if i<=max_y else max_y for i in y]
faster = [i if i<=max_y else max_y for i in faster]

# create DataFrame
df = pd.DataFrame({'x':x,'y':y, 'slower':slower, 'faster':faster, 'frame':frame})

# create figure
fig = px.strip(
    df,
    x=x,
    y=['y','slower', 'faster'], 
    animation_frame='frame', 
    range_x=[0.5, 1.5], 
    range_y=[0, max_y],
    height=600, 
    width=600
)    
fig.show()

creates:
racing_points_2