I want to plot a very simple function that would look like a simple sinusoidal f(x) = r + n* sin(n*x) in a Cartesian coordinate plane. Given this, now I want to plot this in a polar plot -- ideally as a sin wave along a circular path. This is my code import numpy as np import matplotlib.pyplot as plt n_theta = 500 theta = np.linspace(0, 2 * np.pi, n_theta) def inner(theta, n_petals, amplitude, base_radius): return base_radius + amplitude * np.cos(n_petals * theta) inner_bc = inner(theta, n_petals=5, amplitude=2, base_radius=5) # Create polar plot plt.figure(figsize=(6, 6)) ax = plt.subplot(111, projection='polar') ax.grid(True) ax.plot(theta, inner_bc, color='red', linewidth=0.8) plt.show() but this has a bug that is, it compresses as r getting lower and expands when r getting higher -- producing a plot that is not preserving angles of a sin wave. can someone please suggest a way to correct this function such that it plots the graph correctly ? My guess is, it has to be properly accounted for x-y to r-theta transformation, only in the radial direction but I couldn't wrap my head around how to do it properly. Could someone shed some light on this ? Continue reading...
