[英]How to create Dataframe by adding row by row numpy arrays
因此,我得到了一堆要以流方式添加到數據幀的數組。 我正在嘗試如下
df = pd.DataFrame(columns=['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'y'])
outputs = get_outputs()
for xp, yp in zip(outputs, labels):
ex = np.append(xp, yp)
print(ex)
print(ex.shape)
#trying here to create row-dataframe
exdf = pd.DataFrame(ex, columns=['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'y'])
#want to append the row to the main dataframe
df.append(exdf)
我得到輸出和這樣的錯誤
[ 4.49039745 -9.63315201 7.70181465 -15.19582367 12.6580925
-1.17788887 -5.21339655 2.6664052 2.96283174 1.22973883
6. ]
(11,)
...
ValueError: Shape of passed values is (11, 1), indices imply (11, 11)
我應該怎么做?
編輯:合並答案后
exdf = pd.DataFrame([ex], columns=['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'y'])
print(exdf)
df.append(exdf)
print(df[:1])
我收到空的數據框
Out
1 2 3 4 ... 8 9 10 y
0 4.490397 -9.633152 7.701815 -15.195824 ... 2.666405 2.962832 1.229739 6.0
[1 rows x 11 columns]
Empty DataFrame
Columns: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, y]
Index: []
在您的for循環中添加[]
for xp, yp in zip(outputs, labels):
ex = np.append(xp, yp)
print(ex)
print(ex.shape)
#trying here to create row-dataframe
exdf = pd.DataFrame([ex], columns=['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'y'])
#want to append the row to the main dataframe
df=df.append(exdf)
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