在Python中计算笛卡尔积x和y上的二维Hermite_e级数
要在笛卡尔积x和y上计算二维Hermite_e级数,请使用Python中的hermite.hermegrid2d(x, y, c)方法。该方法返回笛卡尔积x和y上点的二维多项式的值。
参数是x和y。二维级数在笛卡尔积x和y上的点上进行评估。如果x或y是列表或元组,则首先将其转换为ndarray,否则保持不变,并且如果它不是ndarray,则将其视为一个标量。
参数c是按顺序排列的系数数组,使得i,j次项的系数包含在c[i,j]中。如果c的维度大于二,则其余索引枚举多个系数集。
如果c的维度少于两个维度,则其形状将隐式扩展为2-D。结果的形状将为c.shape[2:] + x.shape。
步骤
首先,导入所需的库 –
import numpy as np
from numpy.polynomial import hermite_e as H
创建一个系数的2D数组 –
c = np.arange(4).reshape(2,2)
显示数组 –
print("Our Array...\n",c)
检查尺寸 –
print("\nDimensions of our Array...\n",c.ndim)
获取数据类型 –
print("\nDatatype of our Array object...\n",c.dtype)
获取形状−
print("\nShape of our Array object...\n",c.shape)
要在x和y的笛卡尔乘积上评估一个2-D Hermite_e系列,使用hermite.hermegrid2d(x, y, c)方法−
print("\nResult...\n",H.hermegrid2d([1,2],[1,2], c))
示例
import numpy as np
from numpy.polynomial import hermite_e as H
# Create a 2D array of coefficients
c = np.arange(4).reshape(2,2)
# Display the array
print("Our Array...\n",c)
# Check the Dimensions
print("\nDimensions of our Array...\n",c.ndim)
# Get the Datatype
print("\nDatatype of our Array object...\n",c.dtype)
# Get the Shape
print("\nShape of our Array object...\n",c.shape)
# To evaluate a 2-D Hermite_e series on the Cartesian product of x and y, use the hermite.hermegrid2d(x, y, c) method in Python
print("\nResult...\n",H.hermegrid2d([1,2],[1,2], c))
输出
Our Array...
[[0 1]
[2 3]]
Dimensions of our Array...
2
Datatype of our Array object...
int64
Shape of our Array object...
(2, 2)
Result...
[[ 6. 10.]
[11. 18.]]