PROSAGA码农传奇-R-如何将readLines的输出转换为数据帧

如何将readLines的输出转换为数据帧

作者: 十二*
发布时间: 2024-12-27 01:07:20 (20天前)
转自：

<div class =“post-text”itemprop =“text”>
  
    给定readLines之后的输出，这必须是CSV文件的内容：
  
   <pre>
 <code>
 "","myid","var"
"1","1","0.5949020"
"2","2","0.8515591"
"3","3","0.8139010"
"4","4","0.3804234"
"5","5","0.4923082"
"6","6","0.9933775"
"7","7","0.1740895"
"8","8","0.8342808"
"9","9","0.3958154"
"10","10","0.9690561"

</code>
 </pre>
  
    那是，
    的
      你的价值观是
      
        逗号分开
      
       和
      
        用双引号括起来
      
    </强>
    。当我读到这个文件时，我得到你的输出：
  
   <pre>
 <code>
 dat
 [1] "\"\",\"myid\",\"var\"" "\"1\",\"1\",\"0.5949020\"" 
 [3] "\"2\",\"2\",\"0.8515591\"" "\"3\",\"3\",\"0.8139010\"" 
 [5] "\"4\",\"4\",\"0.3804234\"" "\"5\",\"5\",\"0.4923082\"" 
 [7] "\"6\",\"6\",\"0.9933775\"" "\"7\",\"7\",\"0.1740895\"" 
 [9] "\"8\",\"8\",\"0.8342808\"" "\"9\",\"9\",\"0.3958154\"" 
[11] "\"10\",\"10\",\"0.9690561\""

</code>
 </pre>
  
    所以你需要做的是
  
  <UL>
    <LI>
      的
        在逗号分开
      </强>
       
      
同
       <code>
 unlist(strsplit(..., split = ",")
 </code>
    </LI>
  </UL>
  
    和
  
  <UL>
    <LI>
      的
        替换转义的双引号
      </强>
       
      
同
       <code>
 gsub("\"", "", ...)
 </code>
    </LI>
  </UL>
  
    这给了我们：
  
   <pre>
 <code>
 unlist(strsplit(gsub("\"", "", dat), split = ","))

[1] ""          "myid"      "var"       "1"         "1"         "0.5949020" "2"        
 [8] "2"         "0.8515591" "3"         "3"         "0.8139010" "4"         "4"        
[15] "0.3804234" "5"         "5"         "0.4923082" "6"         "6"         "0.9933775"
[22] "7"         "7"         "0.1740895" "8"         "8"         "0.8342808" "9"        
[29] "9"         "0.3958154" "10"        "10"        "0.9690561"

</code>
 </pre>
</DIV>