Question

  fkelly6 = matrix(data = NA, nrow = 252, 3)

    for(i in 1:252){

    fkelly6[i,] = matrix(c(ftmp6[i,],1-sum(ftmp6[i,])),1,3)
    if(fkelly6[i,]>= 15){
      fkelly6[i,]<-15
     }
    }

我想检查所有f是否都大于等于15，并用15代替。该代码有效，但它给了我几条警告：“如果（（fkelly6 [i，]> = 15）{...：条件的长度> 1，并且只会使用第一个元素” 他们是什么意思？谢谢

Answer 1

这是您无需循环即可更改某些值的方法：

<div id="controlContainer">
  <h1>Main Container</h1>
</div>
<div id="beforeUpload" style="display: none;">
  <h2>It will append to "Main Container" and this is Before Upload</h2>
</div>
<div id="uploadHeading" style="display: none;">
  <h4>It will prepend to "Main Container" and this is Upload Heading</h4>
</div>
<div id="afterUpload" style="display: none;">
  <h3>It will append to "Main Container" and this is After Upload</h3>
</div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>

如果陈述给我一些警告，它们是什么意思？

1 个答案: