dcast error:`匹配错误（x，表格，nomatch=0L）`

我有一个名为

df

的数据帧，看起来像这样

"ID","ReleaseYear","CriticPlayerPrefer","n","CountCriticScores","CountUserScores"
"1",1994,"Both",1,5,283
"2",1994,"Critics",0,0,0
"3",1994,"Players",0,0,0
"4",1995,"Both",3,17,506
"5",1995,"Critics",0,0,0
"6",1995,"Players",0,0,0
"7",1996,"Both",18,163,3536
"8",1996,"Critics",2,18,97
"9",1996,"Players",3,20,79

我想翻转数据框，使列如下所示：

“发布年”、“两者”、“评论家”、“玩家”

列

tweet'、

critists

和

Players

的值将分别为

n`

当我试着运行这个

require(dcast)
chartData.CriticPlayerPreferByYear <- dcast(
    data = df,
    formula = ReleaseYear ~ CriticPlayerPrefer,
    fill = 0,
    value.var = n
)

---

这里有什么问题？如何修复它？

您似乎缺少引号

data <- read.table(text='"ID","ReleaseYear","CriticPlayerPrefer","n","CountCriticScores","CountUserScores"
"1",1994,"Both",1,5,283
"2",1994,"Critics",0,0,0
"3",1994,"Players",0,0,0
"4",1995,"Both",3,17,506
"5",1995,"Critics",0,0,0
"6",1995,"Players",0,0,0
"7",1996,"Both",18,163,3536
"8",1996,"Critics",2,18,97
"9",1996,"Players",3,20,79"',header=T,sep=",")

library(reshape2)
dcast(data, ReleaseYear ~ CriticPlayerPrefer, value.var="n")

# ReleaseYear Both Critics Players
#       1994    1       0       0
#       1995    3       0       0
#       1996   18       2       3

---

data
value.var=“n”
，需要引用列名。dcast不是一个包，好吧；你的意思是什么？另一种选择：
库（dplyr）；图书馆（tidyr）；df%>%select（ReleaseYear，CriticPlayerPrefer，n）%>%spread（CriticPlayerPrefer，n）
@Psidom如果你想让我把这个标记正确，请继续并发布你的答案刚才看到了@Psidom评论；忽略^
data <- read.table(text='"ID","ReleaseYear","CriticPlayerPrefer","n","CountCriticScores","CountUserScores"
"1",1994,"Both",1,5,283
"2",1994,"Critics",0,0,0
"3",1994,"Players",0,0,0
"4",1995,"Both",3,17,506
"5",1995,"Critics",0,0,0
"6",1995,"Players",0,0,0
"7",1996,"Both",18,163,3536
"8",1996,"Critics",2,18,97
"9",1996,"Players",3,20,79"',header=T,sep=",")

library(reshape2)
dcast(data, ReleaseYear ~ CriticPlayerPrefer, value.var="n")

# ReleaseYear Both Critics Players
#       1994    1       0       0
#       1995    3       0       0
#       1996   18       2       3