擅长:python、mysql、java
<p>这就是你想要的:</p>
<pre><code>In [43]: X = df.Xi.reshape((len(df), 1))
In [44]: X
Out[44]:
array([[-2.55299 ],
[ 1.764052],
[-1.791328],
[-1.214077],
[-1.44494 ],
[ 0.19507 ],
[ 1.480515]])
</code></pre>
<p>如果要舍入您的值:</p>
<pre><code>In [62]: df.Xi.round(5).reshape(len(df), 1)
Out[62]:
array([[-2.55299],
[ 1.76405],
[-1.79133],
[-1.21408],
[-1.44494],
[ 0.19507],
[ 1.48052]])
</code></pre>