ValueError: zero-dimensional arrays cannot be concatenated,
ValueError: zero-dimensional arrays cannot be concatenated,
我有两个轴为 0 的数组(有一个 df 的均值和标准差的结果):
df_cats =
0 58.609619
1 105.926514
2 76.706543
3 75.405762
4 68.937744
...
75 113.124268
76 125.557373
77 130.514893
78 141.373779
79 109.185791
Length: 80, dtype: float64 0 63.540835
1 55.053429
2 96.221076
3 42.963771
4 57.447924
...
75 42.080755
76 55.309517
77 38.997856
78 57.364695
79 40.197461
Length: 80, dtype: float64
df_dogs =
0 86.870361
1 153.085205
2 89.576416
3 139.721924
4 107.218750
...
75 129.498291
76 108.676025
77 113.125732
78 145.829346
79 100.272461
Length: 80, dtype: float64 0 57.699218
1 71.814790
2 40.130439
3 44.966932
4 48.964512
...
75 50.994298
76 58.257198
77 89.240987
78 58.945353
79 68.841721
Length: 80, dtype: float64
我正在尝试使用以下代码将两个数组与 axis=1 连接起来:
dogs_and_cats = np.concatenate((df_dogs, df_cats), axis=1)
但总是遇到这个问题:
**ValueError:** zero-dimensional arrays cannot be concatenated
我怎样才能连接它?
一维数组没有第二维。这就是您的问题所在。您可以通过修改这些数组的形状来连接它们,将它们变成只有一列的二维数组,代码如下:
df_dogs.shape=(df_dogs.shape[0],1)
df_cats.shape=(df_cats.shape[0],1)
现在,您可以连接数组。
我有两个轴为 0 的数组(有一个 df 的均值和标准差的结果):
df_cats =
0 58.609619
1 105.926514
2 76.706543
3 75.405762
4 68.937744
...
75 113.124268
76 125.557373
77 130.514893
78 141.373779
79 109.185791
Length: 80, dtype: float64 0 63.540835
1 55.053429
2 96.221076
3 42.963771
4 57.447924
...
75 42.080755
76 55.309517
77 38.997856
78 57.364695
79 40.197461
Length: 80, dtype: float64
df_dogs =
0 86.870361
1 153.085205
2 89.576416
3 139.721924
4 107.218750
...
75 129.498291
76 108.676025
77 113.125732
78 145.829346
79 100.272461
Length: 80, dtype: float64 0 57.699218
1 71.814790
2 40.130439
3 44.966932
4 48.964512
...
75 50.994298
76 58.257198
77 89.240987
78 58.945353
79 68.841721
Length: 80, dtype: float64
我正在尝试使用以下代码将两个数组与 axis=1 连接起来:
dogs_and_cats = np.concatenate((df_dogs, df_cats), axis=1)
但总是遇到这个问题:
**ValueError:** zero-dimensional arrays cannot be concatenated
我怎样才能连接它?
一维数组没有第二维。这就是您的问题所在。您可以通过修改这些数组的形状来连接它们,将它们变成只有一列的二维数组,代码如下:
df_dogs.shape=(df_dogs.shape[0],1)
df_cats.shape=(df_cats.shape[0],1)
现在,您可以连接数组。