问题描述
x = ['a','b','c','d','e','f']
y = np.array(['10','20','30','40','50','60'])
z = np.array(['x','y','z','f','s'])
df_vaex = vaex.from_arrays(x=x,y=y,z=z)
df_vaex.y = df_vaex.y.astype('float64')
print(df_vaex.dtypes)
输出
x <class 'str'>
y <class 'str'>
z <class 'str'>
dtype: object
如何将字符串列转换为数字?谢谢。
解决方法
我找到了解决方法https://github.com/vaexio/vaex/issues/944
df_vaex['y'] = df_vaex.y.astype('float64')