I want to draw x=0
and y=0
axis in my contour plot, using a white color. If that is too cumbersome, I would like to have a white dot denoting where the origin is.
My contour plot looks as follows and the code to create it is given below.
xvec = linspace(-5.,5.,100)
X,Y = meshgrid(xvec, xvec)
fig = plt.figure(figsize=(6, 4))
contourf(X, Y, W,100)
plt.colorbar()
There are a number of options (E.g. centered spines), but in your case, it's probably simplest to just use axhline
and axvline
.
E.g.
import numpy as np
import matplotlib.pyplot as plt
xvec = np.linspace(-5.,5.,100)
x,y = np.meshgrid(xvec, xvec)
z = -np.hypot(x, y)
plt.contourf(x, y, z, 100)
plt.colorbar()
plt.axhline(0, color='white')
plt.axvline(0, color='white')
plt.show()