r - 我怎样才能让这个 gsub 函数为我工作？

Question

对 R 非常陌生，并且正在通过尝试构建模型来即时学习很多东西。我试过寻找解决方案，但没有找到任何东西。
我有一个名为 HPPH 的数据框，看起来像这样。我正在尝试将其重新格式化为一个数字。 例如:39' 11"更改为 39.11

      player_name      PH        
  <chr>            <chr>     
1 Chad Campbell    "39' 11\""
2 Charl Schwartzel "39' 7\"" 
3 Ángel Cabrera    "39' 6\"" 
4 Vaughn Taylor    "39' 4\"" 
5 Stephen Ames     "39' 4\"" 

当我使用 gsub("' ", ".", HPPH$PH)我得到这个结果:

> gsub("' ", ".", HPPH$PH)
 [1] "39.11\"" "39.7\""  "39.6\""  "39.4\""  "39.4\""  "39.1\""  "39.1\""  "39.0\""  "38.10\"" "38.4\""  "40.7\"" 
[12] "38.2\""  "38.1\""  "38.1\""  "37.7\""  "37.4\""  "37.2\""  "37.1\""  "37.0\""  "36.11\"" "36.9\""  "36.8\"" 
[23] "38.2\""  "36.5\""  "40.9\""  "40.10\"" "48.11\"" "40.10\"" "47.3\""  "45.11\"" "45.10\"" "45.7\""  "45.5\"" 
[34] "44.7\""  "43.8\""  "43.1\""  "42.10\"" "41.6\""  "40.10\"" "46.3\""  "36.4\""  "36.2\""  "36.0\""  "29.8\"" 
[45] "29.10\"" "29.10\"" "35.10\"" "35.9\""  "35.7\""  "35.6\""  "35.5\""  "35.5\""  "35.2\""  "35.2\""  "35.0\"" 
[56] "34.8\""  "34.8\""  "34.4\""  "34.0\""  "33.9\""  "33.6\""  "33.5\""  "33.1\""  "33.0\""  "31.10\"" "31.5\"" 
[67] "31.3\""  "31.0\""  "30.11\""

所以它似乎在做它应该做的事情，但是当我查看 HPPH 时，它并没有改变任何东西。

> head(HPPH)
# A tibble: 6 x 2
  player_name      PH        
  <chr>            <chr>     
1 Chad Campbell    "39' 11\""
2 Charl Schwartzel "39' 7\"" 
3 Ángel Cabrera    "39' 6\"" 
4 Vaughn Taylor    "39' 4\"" 
5 Stephen Ames     "39' 4\"" 
6 David Toms       "39' 1\"" 

如果我用 HPPH$PH <- gsub("' ", ".", HPPH$PH) 分配它它变成了一个值，当我使用 View(HPPH) 时，它现在显示为这样。

Answer 1

我们需要将它分配给对象

HPPH$PH <- gsub("' ", ".", HPPH$PH)