在Python中评估二维Hermite_e级数的点(x,y)
要在点(x,y)处评估二维Hermite_e级数,请使用Python Numpy中的hermite.hermeval2d()方法。该方法返回由x和y中对应值对形成的点上的二维多项式的值。
第一个参数是x,y。二维级数在点(x,y)处进行评估,其中x和y必须具有相同的形状。如果x或y是列表或元组,则首先将其转换为ndarray,否则将保持不变,如果它不是ndarray,则将其视为标量。
第二个参数C是一个按照顺序排列的系数数组,多项式的多次幂i,j的系数包含在c[i,j]中。如果c的维数大于二,剩余的索引将枚举多个系数集。
步骤
首先,导入所需的库−
import numpy as np
from numpy.polynomial import hermite_e as H
创建一个多维系数数组 –
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)
将下面的英文翻译成中文,不解释,保留HTML格式:
要在点(x,y)上评估2D Hermite级数,请在Python Numpy中使用hermite.hermeval2d()方法
print("\nResult...\n",H.hermeval2d([1,2],[1,2],c))
示例
import numpy as np
from numpy.polynomial import hermite_e as H
# Create a multidimensional 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 2D Hermite_e series at points (x, y), use the hermite.hermeval2d() method in Python Numpy
print("\nResult...\n",H.hermeval2d([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. 18.]