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r - 将对象作为行添加到 R 中的数据框

问题描述

我有一个空的 DF：

CharactersDF <- data.frame(matrix(ncol = 7, nrow = 0))

我创建了一个新类：

 RPGcharacter <- function(name, level, rpgClass, race, HP, attack, resist){
   value <- list(name= name, level = level, rpgClass = rpgClass, HP = HP, attack = attack, resist = resist)
   attr(value, "class") <- "RPGcharacter"
   value
 }

然后是新对象：

Artur <- RPGcharacter("Artur", 22, "Warlock", "Dwarf", 130, 12, 3)

如何在那个空的df中将对象添加为一行？我试过了：

   CharactersDF <- rbind(CharactersDF, Artur)

但我得到了：

 Warning messages:
1: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  replacement element 1 has 1 row to replace 0 rows
2: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  replacement element 2 has 1 row to replace 0 rows
3: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  replacement element 3 has 1 row to replace 0 rows
4: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  replacement element 4 has 1 row to replace 0 rows
5: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  replacement element 5 has 1 row to replace 0 rows
6: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  replacement element 6 has 1 row to replace 0 rows
7: In `[<-.data.frame`(`*tmp*`, 1, value = list(name = "Artur", level = 22,  :
  provided 6 variables to replace 1 variables

标签： rdataframeoop

解决方案

正如 Ben 在他的评论中指出的那样，你想使用CharactersDF <- rbind(CharactersDF, Artur).

您在CharactersDFand上使用 rbind 功能Artur，因此您使用rbind(). 您正在尝试使用 Python 风格的语法，其中句点表示您正在调用 object 的属性CharactersDF。在这里，您要调用rbind()这两个对象，然后将结果分配到您要存储的任何位置。

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