python 3.x - Finding parameters of curve with scipy

Question

Hi guys I'm using scipy optimize curve fit to find the best curve for my data. The data and the function that I'm using are

X = [231. , 845. , 275. , 935.9, 927.6, 803. , 707. , 890. , 934.3, 939.1, 931.7, 613. , 925. , 822.2, 913. , 899.7,   1. ]
Y = [12.4,11,12.3,2.6,9,11.5,12,10.5,3.9,0.7,5,12.3,6.5,11.4,10,9.6,12.5]

def IV(x,a,b):
    return a*np.exp(b*x)

params, params_covariance = optimize.curve_fit(IV, X, Y)
a = params[0]
b = params[1]

But I get two errors:

<ipython-input-6-c32b0762eb3a>:6: RuntimeWarning: overflow encountered in exp
  return a*np.exp(b*x)

RuntimeError: Optimal parameters not found: Number of calls to function has reached maxfev = 600.

Right now I trying using maxfev = 1000000000 but it is taking forever.

question from:https://stackoverflow.com/questions/65545373/finding-parameters-of-curve-with-scipy

Answer 1

Waitting for answers