相关疑难解决方法(0)

在与同事讨论性能,教学,发送错误报告或在邮件列表上搜索指导时,以及在Stack Overflow上,通常会询问可重复的示例并始终提供帮助.

您有什么建议创建优秀示例的提示？如何以文本格式粘贴r中的数据结构？您还应该包含哪些其他信息？

在另外还有其他招数来使用dput(),dump()或structure()？你什么时候应该包括library()或require()声明？其中保留字应避免一个,此外c,df,data等？

怎样才能成为一位伟大的[R重复的例子？

我有一个包含任何这些值的数据框.

from=c("A","C","G","T","R","Y","M","K","W", "S","N")

我想用相应的替换

to=c("AA","CC","GG","TT","AG","CT","AC","GT","AT", "CG","NN")

最好的方法是什么,循环遍历所有要替换的值？或循环遍历矩阵位置.或任何其他解决方案？

dd<-matrix(sample(from, 100, replace=TRUE), 10) 

dd
      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
 [1,] "K"  "S"  "G"  "T"  "R"  "N"  "A"  "C"  "W"  "M"  
 [2,] "Y"  "K"  "S"  "G"  "T"  "R"  "N"  "A"  "C"  "W"  
 [3,] "M"  "Y"  "K"  "S"  "G"  "T"  "R"  "N"  "A"  "C"  
 [4,] "W"  "M"  "Y"  "K"  "S"  "G"  "T"  "R"  "N"  "A"  
 [5,] "C"  "W"  "M"  "Y"  "K"  "S"  "G"  "T"  "R"  "N"  
 [6,] "A"  "C" …