I need to extract data points from a contour plot. I have already done this following: matplotlib - extracting data from contour lines
But a few weeks ago, I updated python, and now the code won't run. I verified trying to run an old code that worked properly, and it is also getting error message.
Here is an example of the code:
%matplotlib inline
from numpy import arange
from numpy import pi
import matplotlib.pyplot as plt
import numpy as np
pos = np.logspace(-5,-1,10)
tends = np.logspace(-4,-1,10)
zz = [f(p,t) for p in pos for t in tends]
zz = np.reshape(zz,(ii,ii))
plt.xscale('log')
plt.yscale('log')
cs = plt.contour(pos,tends,zz,1)
p = cs.collections[0].get_paths()[0]
v = p.vertices
xcol1 = v[:,0]
ycol2 = v[:,1]
and the error is:
IndexError Traceback (most recent call last)
<ipython-input-153-3cef0e58f7bb> in <module>
2 plt.yscale('log')
3 cs = plt.contour(pos,Tends,zz,1)
----> 4 p = cs.collections[0].get_paths()[0]
5 v = p.vertices
6 xcol1 = v[:,0]
IndexError: list index out of range
I tried to do:
p = cs.collections[0].get_paths()
But it returned that p was [] empty. So, I don't know what else to do, I'm not very familiar with this.
Thanks in advance!
