在Python中评估x和y的笛卡尔积上的二维Hermite级数
要在Python中评估x和y的笛卡尔积上的二维Hermite级数,可以使用hermite.hermgrid2d(x, y, c)方法。该方法返回在x和y的笛卡尔积中的点处二维多项式的值。
参数是x,y。二维级数在x和y的笛卡尔积中的点处进行评估。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,如果它不是ndarray,则将其视为标量。
参数c是一个系数数组,其系数按顺序排列,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的维度小于二,则会隐式地将其形状附加为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 as H
创建一个二维系数数组:
c = np.arange(4).reshape(2,2)
显示数组:
print("Our Array...\n",c)
检查维度:
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Python中评估x和y的笛卡尔积上的二维Hermite级数,可以使用hermite.hermgrid2d(x, y, c)方法:
print("\nResult...\n",H.hermgrid2d([1,2],[1,2], c))
示例
import numpy as np from numpy.polynomial import hermite 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 series on the Cartesian product of x and y, use the hermite.hermgrid2d(x, y, c) method in Python print("\nResult...\n",H.hermgrid2d([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... [[18. 32.] [34. 60.]]
广告