Python 从一个Chebyshev序列中减去另一个

为了从一个Chebyshev序列中减去另一个，可以使用Python Numpy中的polynomial.chebyshev.chebsub()方法。该方法返回一个表示它们差异的Chebyshev系数数组。返回两个Chebyshev序列c1 – c2的差。系数的顺序是从最低阶到最高阶，即[1,2,3]表示序列T_0 + 2T_1 + 3T_2。参数c1和c2是按照从低到高的顺序排列的1-D Chebyshev系列系数数组。

步骤

首先，导入所需的库-

import numpy as np
from numpy.polynomial import chebyshev as C

创建Chebyshev系数1-D数组−

c1 = np.array([1,2,3])
c2 = np.array([3,2,1])

显示系数数组 −

print("Array1...\n",c1)
print("\nArray2...\n",c2)

展示数据类型−

print("\nArray1 datatype...\n",c1.dtype)
print("\nArray2 datatype...\n",c2.dtype)

检查两个数组的尺寸-

print("\nDimensions of Array1...\n",c1.ndim)
print("\nDimensions of Array2...\n",c2.ndim)

检查两个数组的形状 –

print("\nShape of Array1...\n",c1.shape)
print("\nShape of Array2...\n",c2.shape)

要将一个Chebyshev系列减去另一个Chebyshev系列，请使用Python中的polynomial.chebyshev.chebsub()方法。该方法返回一个表示它们差异的Chebyshev系列系数数组 –

print("\nResult (subtraction)....\n",C.chebsub(c1,c2))

示例

import numpy as np
from numpy.polynomial import chebyshev as C

# Create 1-D arrays of Chebyshev series coefficients
c1 = np.array([1,2,3])
c2 = np.array([3,2,1])

# Display the arrays of coefficients
print("Array1...\n",c1)
print("\nArray2...\n",c2)

# Display the datatype
print("\nArray1 datatype...\n",c1.dtype)
print("\nArray2 datatype...\n",c2.dtype)

# Check the Dimensions of both the arrays
print("\nDimensions of Array1...\n",c1.ndim)
print("\nDimensions of Array2...\n",c2.ndim)

# Check the Shape of both the arrays
print("\nShape of Array1...\n",c1.shape)
print("\nShape of Array2...\n",c2.shape)

# To subtracr one Chebyshev series to another, use the polynomial.chebyshev.chebsub() method in Python Numpy
print("\nResult (subtraction)....\n",C.chebsub(c1,c2))

输出

Array1...
[1 2 3]

Array2...
[3 2 1]

Array1 datatype...
int64

Array2 datatype...
int64

Dimensions of Array1...
1

Dimensions of Array2...
1

Shape of Array1...
(3,)

Shape of Array2...
(3,)

Result (subtraction)....
[-2. 0. 2.]