How to place arrows on the graph of a parametric curve - Python - Plotly

Question

I posted that same question earlier on stack overflow (in English).

I’m new in python and I’m learning to plot parametric functions using plotpy.

Therefore, I "challenged" myself to write a code that generates the parametric graph of the curve γ:[-2π,2π] R 2, γ(t)= (sin(t),t 2). So I wrote the following code:

import plotly as py
import plotly.graph_objs as go
import numpy as np

py.offline.init_notebook_mode(connected=True) 

x = np.linspace(-2*np.pi, 2*np.pi, 3000)

layout = go.Layout(
    title='$\gamma(t) = (\sin(t),t^2),\ t\in[-2\pi,2\pi]$',
    )

trace1= go.Scatter(
            x=np.sin(x),
            y=x**2,
            mode='lines',
            line=dict(
                shape='spline'
            )
        )

fig = go.Figure(data=[trace1],layout=layout)
py.offline.iplot(fig)


    

Now, I would like to add some arrows in this graph in order to represent the direction of the path that the γ curve is taking. I mean, I’m trying to generate a similar image to this one:

I looked online about how to do this, but so far I found nothing.

Someone knows how to do it?

Answer 1

Answering and not answering your question: you have to work with the tools that plotly gives you. Unfortunately this library does not support your requirement. I suggest you take a good look at the Plotly documentation and see if any other chart can meet your needs.

I hope I’ve helped!