Question

我有一个ndarray，其形状是（5,2）。如何将其更改为行列表，而不是列列表。这是代码

from xml.etree import cElementTree as etree

tree = etree.parse("my_xml_file.xml")
namespaces = {"a":"http://schemas.openxmlformats.org/presentationml/2006/main"}
slidenums = tree.findall("a:fld[@type='slidenum']/a:t", namespaces)
for slidenum in slidenums:
    print(slidenum.text)

然而，我想要的是

poly
array([['610.0', '1150.0'],
   ['675', '1150'],
   ['675', '1215'],
   ['610', '1215'],
   ['610', '1150']], 
  dtype='|S32')
shape(poly)
 (5,2)
poly.tolist()
 [['610.0', '1150.0'],
 ['675', '1150'],
 ['675', '1215'],
 ['610', '1215'],
 ['610', '1150']]

我怎么能得到它？

Answer 1

您可以使用：方法：

ndarray.T
ndarray.transpose()

在你的情况下：

poly.T

或

poly.transpose()

使用此：

import numpy as np
poly=np.array([['610.0', '1150.0'],
   ['675', '1150'],
   ['675', '1215'],
   ['610', '1215'],
   ['610', '1150']], 
  dtype='|S32')

print("poly", poly)

print()

#print(poly.shape())

print("poly.tolist()", poly.tolist())

#print(poly.T)
print()

print("poly.transpose()", poly.transpose())

将numpy ndarray从列列表转换为行列表

1 个答案: