Multi-line title with variable in matplotlib

Question

I'm using Matplotlib 3.1.2 and I'm trying to have a title that is split into two lines. I have a variable string in the plt.title() with latex formatting (r''). When I try the \newline or \n inside the string the output simply prints the \newline or \n as text and there's no line split. Here's my implementation:

  plt.title(r'M$_{\rm{BH}}$ = 10$^{10}$ M$_{\odot}$, log U = %s, r$_{\rm{in}}$ = 10$^{18}$ cm'%(-1 + ((array1.tolist().index(i))*0.25)))

I tried adding a plt.suptitle() which does the job but there's an overlap between the two lines and I don't know how to add spacing/padding between them.

Answer 1

One possible solution is not to use raw-strings, but you need to escape the \:

plt.title('M$_{\\rm{BH}}$ = 10$^{10}$ M$_{\\odot}$\nlog U = %s\nr$_{\\rm{in}}$ = 10$^{18}$ cm'%('test'))

Answer 2

I was looking for a solution to this and got it working even with raw strings for LaTeX using:

import matplotlib.pyplot as plt
plt.title(r"Text $\omega$" + '\n' + r"$\delta$", multialignment='center')

or, with 3D plots:

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.set_title(r"Text $\omega$" + '\n' + r"$\delta$", multialignment='center')

It may or may not be necessary to use actual LaTeX rendering of text instead of Matplotlib's built-in MathTex. You can do this by:

import matplotlib.pyplot as plt
plt.rcParams.update({"text.usetex" : True})

Plus, I think it looks far nicer with it.