擅长:python、mysql、java
<p>除上述情况外,还存在一种情况,即每行只需要1(一)个值。根据@hpaulj和@ashutosh chap的答案进行推断,如解决方案如下所示:</p>
<pre><code>row = np.array([0,1,2,3,4])
column = np.array([9,9,2,3,9])
matrix2[row[:,None], column[:,None]] = 1
</code></pre>
<p>结果是这样的:</p>
<p><a href="https://i.stack.imgur.com/sRPei.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sRPei.png" alt="fanzy idx one per row"/></a></p>