  # Python | Numpy np.chebgrid2d () method

NumPy | Python Methods and Functions

Using the `np.chebgrid2d () ` method, we can get an array of coefficients after calculating the Chebyshev series from the Cartesian product of x and y using ` np.chebgrid2d () `.

Syntax: ` np.chebgrid2d (x, y, c) `
Return: Return an array after evaluation on (x, y).

Example # 1:
In this example, we can see that using ` np.chebgrid2d () `, we can get an array of coefficients by evaluating Chebyshev series on the Cartesian product of x and y.

 ` # NumPy import ` ` import ` ` numpy as np ` ` import ` ` numpy.polynomial.chebyshev as cheb `   ` # using the np.chebgrid2d () method ` ` gfg ` ` = ` ` cheb.chebgrid2d ((` ` 2 ` `, ` ` 5 ` `), (` ` 1 ` `, ` ` 3 ` `), (` ` 2 ` `, ` ` - ` ` 4 ` `, ` ` 1 ` `)) `   ` print ` ` (gfg) `

Output:

[32. 94.]

Example # 2:

 ` # NumPy import ` ` import ` ` numpy as np ` ` import ` ` numpy.polynomial.chebyshev as cheb `   ` # using the np.chebgrid2d () method ` ` gfg ` ` = cheb.chebgrid2d (( 1 , 3 , 5 , 7 ), ( 2 , 4 , 8 ), (` ` 2 ` `, ` ` - ` ` 4 ` `, ` ` 1 ` ` , ` ` 5 ` `, ` ` 1 ` `)) ` ` `  ` print ` ` (gfg) `

Output:

[719680. 6486180.52831708.]