CODEWITHSUNDEEP
python-2.7numpypandas
niran
niran

Reputation: 1980

how to print polynomial equation using numpy?

I want print a polynomial equation for the given data. I am using this line of code, however I am not sure this the correct way to get the polynomial equation for the given data

fit2 = numpy.polyfit(temp[0][0],temp[0][1],deg=2)
y1=numpy.poly1d(fit2)

Please advise

Upvotes: 1

Views: 2543

Answers (1)

B. M.
B. M.

Reputation: 18638

Sympy has some nice features do that simply:

from sympy import Symbol,expand

fit2 = numpy.polyfit(temp[0][0],temp[0][1],deg=2)
y1=numpy.poly1d(fit2)

x=Symbol('x')
print(expand(y1(x)))

for:

-2.6666666666668*x**3 + 41.0000000000018*x**2 - 195.333333333342*x + 323.000000000013

Upvotes: 1

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