Plotting phase portrait using matplotlib or matlab?

Question

I need to plot these phase portraits using matplotlib or matlab. How can I give the mappings given below the plottings and draw the arcs accordingly? Matlab or matplotlib is better in this situation?

Answer 1

It's impossible to know without a minimal reproducible example so what follows is a guess.

I suspect @app.task requires the function to have some introspectable attribute that Cython doesn't provide by default. Things to try:

1. Use the directive #cython: binding=True. This makes Cython functions a custom object type that behave more like a regular function.
2. Use Cython 3 alpha (although who knows what version of Cython you're using here, since you don't say). It contains some improvements to function introspection (and enables binding=True by default).
3. Write this bit of code in Python (you could use exec for this for example).