Distribution fitting is not working

[mayanksuman]

I used the example code for fitting triangular distribution.

from pycircstat.distributions import triangular
import matplotlib.pyplot as plt
import numpy as np

rho = .4
t = np.linspace(0,2*np.pi,1000)
x = triangular.rvs(rho, size=5000)
plt.plot(t, triangular.pdf(t, rho))
plt.plot(t, triangular.cdf(t, rho))
plt.hist(x, bins=50, normed=True)
plt.show()

However, this code fails with error that optimization fail to converge after 100 iteration. Same is the case with cardioid distribution.

[fabiansinz]

Ok, I verified that. Seems to be a change on the scipy side. Basically, the rvs is using an optimization procedure from scipy via scipy.stats. That worked in the past, but does not anymore. We need to investigate how to best fix that.