sciPy stats.gmean()函数| Python

scipy.stats.gmean(array, axis=0, dtype=None)计算数组元素沿数组指定轴的几何平均值（ Python中的列表）。
这是公式——

Parameters : 
array: Input array or object having the elements to calculate the geometric mean. 
axis: Axis along which the mean is to be computed. By default axis = 0 
dtype: It sets the type of returned element.
Returns : Geometric mean of the array elements based on the set parameters.

代码#1：

Python3

# Geometric Mean
 
from scipy.stats.mstats import gmean
arr1 = gmean([1, 3, 27])
  
print("Geometric Mean is :", arr1)

输出：

Geometric Mean is : 4.32674871092

代码 #2：使用多维数据

Python3

# Geometric Mean
 
from scipy.stats.mstats import gmean
arr1 = [[1, 3, 27],
        [3, 4, 6],
        [7, 6, 3],
        [3, 6, 8]]
  
print("Geometric Mean is :", gmean(arr1))
 
# using axis = 0
print("\nGeometric Mean is with default axis = 0 : \n",
      gmean(arr1, axis = 0))
 
# using axis = 1
print("\nGeometric Mean is with default axis = 1 : \n",
      gmean(arr1, axis = 1)) 

输出：

Geometric Mean is : [ 2.81731325  4.55901411  7.89644408]

Geometric Mean is with default axis = 0 : 
 [ 2.81731325  4.55901411  7.89644408]

Geometric Mean is with default axis = 1 : 
 [ 4.32674871  4.16016765  5.01329793  5.24148279]