np.chebvander2d() method we can get a 2D Pseudo-Vandermonde matrix from a given array, the degree of which is passed as a parameter using
np .chebvander2d () .
np.chebvander2d (x, y, degree)
Return: Return the 2D matrix having size ie array.size + (degree + 1).
Example # 1:
In this example, we can see that with
np.chebvander2d () we can get a 2D pseudo-vandermonde matrix using this method.
[[1. 2. 7.]blockquo te>
[1. 4. 31.]
[1. 8. 127.]
[1. 1. 1.]]
Example # 2:
# NumPy import
numpy as np
numpy.polynomial.chebyshev as cheb
# using the method np.chebvander2d ()
print code >
[[1.0000e + 00 3.0000e + 00 1.7000e + 01 9.9000e + 01 5.7700e + 02]
[1.0000e + 00 5.0000e + 00 4.9000e + 01 4.8500e + 02 4.8010e + 03]
[1.0000e + 00 1.0000e + 00 1.0000e + 00 1.0000e + 00 1.0000e + 00]
[1.0000 e + 00 1.0000e + 01 1.9900e + 02 3.9700e + 03 7.9201e + 04]]
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