Python | Numpy np.hermvander() method (original) (raw)

Last Updated : 29 Dec, 2019

With the help of **np.hermvander()** method, we can get the pseudo vandermonde matrix from hermite series of given degree by using np.hermvander() method.

Syntax : np.hermvander(x, deg)
Return : Return the pseudo vandermonde matrix of given degree.

Example #1 :
In this example we can see that by using np.hermvander() method, we are able to get the pseudo vandermonde matrix of hermite series by using this method.

import numpy as np

from numpy.polynomial.hermite import hermvander

x = np.array([ 1 , 2 , 3 , 5 , 7 , 11 ])

deg = 2

gfg = hermvander(x, deg)

print (gfg)

Output :

[[ 1. 2. 2.]
[ 1. 4. 14.]
[ 1. 6. 34.]
[ 1. 10. 98.]
[ 1. 14. 194.]
[ 1. 22. 482.]]

Example #2 :

import numpy as np

from numpy.polynomial.hermite import hermvander

x = np.array([ 5 , 10 , - 10 , - 5 ])

deg = 3

gfg = hermvander(x, deg)

print (gfg)

Output :

[[ 1.00e+00 1.00e+01 9.80e+01 9.40e+02]
[ 1.00e+00 2.00e+01 3.98e+02 7.88e+03]
[ 1.00e+00 -2.00e+01 3.98e+02 -7.88e+03]
[ 1.00e+00 -1.00e+01 9.80e+01 -9.40e+02]]

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