Python 将两个列表合并为一个列表
我需要从两个多元正态分布中抽取20个值,每个10个 现在我有两个列表dat1,dat2,看起来像Python 将两个列表合并为一个列表,python,Python,我需要从两个多元正态分布中抽取20个值,每个10个 现在我有两个列表dat1,dat2,看起来像 # means m1, m2 = [2, 2], [1, -1] # covariance cv1, cv2 = [[0.8, 0.4], [0.4, 0.8]], [[1.3, -0.7], [-0.7, 1.3]] dat1 = np.random.multivariate_normal(m1, cv1, 10) dat2 = np.random.multivariate_normal(m2,
# means
m1, m2 = [2, 2], [1, -1]
# covariance
cv1, cv2 = [[0.8, 0.4], [0.4, 0.8]], [[1.3, -0.7], [-0.7, 1.3]]
dat1 = np.random.multivariate_normal(m1, cv1, 10)
dat2 = np.random.multivariate_normal(m2, cv2, 10)
>>>dat1
array([[2.41897704, 1.01060023],
[2.59949247, 1.93349966],
[2.65142916, 2.58018331],
[2.17005156, 3.17732589],
[3.02638605, 2.8026237 ],
[2.98480009, 3.27263144],
[2.43494798, 1.88818356],
[3.3352379 , 2.22139406],
[1.47718545, 1.77338061],
[0.21706158, 2.74841337]])
如果我尝试
TRAINING_DATA = [c+d for c, d in zip(dat1, dat2)]
我明白了
如何将dat2附加到dat1,使其看起来像
>>>TRAINING_DATA
array([[3.57377544, -0.89898446],
[4.11181782, 0.23353741],
...
])
尝试将两个数组连接在一起,这会将dat2追加到dat1
阅读文档:那么您想按索引顺序排列吗?可以说每个列表中的索引为0,最终返回为[3.57377544,-0.89898446 4.11181782,0.23353741]?回答的thx。我只想将所有数组从dat2追加到dat1数组。最后,我想要一个数组,它在TRAINING_数据数组中包含来自dat1和dat2的所有数组。索引0将返回[2.41897704,1.01060023],因为它来自dat1,索引10将返回[3.57377544,-0.89898446]。因此,我将在TRAINING_数据数组中包含所有20个数组。
>>>TRAINING_DATA
array([[3.57377544, -0.89898446],
[4.11181782, 0.23353741],
...
])
TRAINING_DATA = np.concatenate((dat1, dat2), axis=0)
[[ 1.50548361 1.48826683]
[ 2.29344 3.53410247]
[ 3.19513868 0.94069523]
[ 1.81553839 0.61394121]
[ 1.84940489 2.51819747]
[ 1.9253743 2.01885069]
[ 2.19767682 1.81290866]
[ 2.6041682 2.04656255]
[ 1.14421244 1.43839062]
[ 2.12712095 1.50493227]
[ 0.0252174 -1.54414803]
[ 1.94548543 -1.71105078]
[ 0.42478946 -0.65312376]
[ 0.18242194 -1.08179918]
[-0.33842747 -1.39057522]
[-0.19844272 0.28873601]
[-0.03024569 -1.20532982]
[ 2.91372093 -1.90649743]
[ 0.64701937 -1.90869586]
[ 0.99986509 -0.92723385]]