在Python中对点(x,y)评估2-D Hermite_e级数
要在点(x,y)处评估2D Hermite_e级数,请使用Python Numpy中的hermite.hermeval2d()方法。该方法返回由从x和y中对应的值对形成的点的多项式的值。
第一个参数是x,y。在点(x,y)处评估二维级数,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,否则将其保持不变,如果它不是ndarray,则将其视为标量。
第二个参数C是按照多位度i,j的术语的系数的顺序排序的数组,其中i,j的项的系数包含在c [i,j]中。如果c的尺寸大于二,则其余索引枚举多组系数。
步骤
首先,导入所需的库-
import numpy as np
from numpy.polynomial import hermite_e as H
创建一组系数的多维数组-
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)
要在点(x,y)处评估2D Hermite_e级数,请使用Python Numpy中的hermite.hermeval2d()方法-
print("\nResult...\n",H.hermeval2d([1,2],[1,2],c))
例子
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.]