R - 将行提取为带双引号的字符串

Question

我有一个名为 dataf 的数据框

dataf<-data.frame(replicate(10,sample(0:1,10,rep=TRUE)))

我想将此数据框的每一行提取为字符串，就像使用此函数一样：

result=data.frame(matrix(NA, ncol=1, nrow=10))

i=0
for(i in 0:9)
{
  result[i+1,]=toString(dataf[i+1,])
}

但结果不如预期:

1, 0, 0, 0, 1, 0, 0, 1, 1, 0
0, 0, 0, 1, 1, 1, 1, 0, 1, 1
1, 1, 0, 0, 0, 0, 0, 0, 1, 0

我想要这个：

"1","0","0","0","1","0","0","1","1","0"
"0","0","0","1","1","1","1","0","1","1"
"1","1","0","0","0","0","0","0","1","0"

我已经尝试使用 dQuote、\"R\"、collapse、sep...但是我没有得到我需要的东西。

Answer 1

[编辑]

方法如下：

d <- apply(dataf, 1, toString)
splitup <- lapply(d, function(x) paste('\"', unlist(strsplit(x, ',')), ',\"', sep=''))

data.frame(do.call(rbind, splitup))
     X1    X2    X3    X4    X5    X6    X7    X8    X9
1  "1," " 0," " 0," " 1," " 1," " 0," " 1," " 0," " 1,"
2  "1," " 0," " 1," " 1," " 0," " 1," " 0," " 0," " 0,"
3  "0," " 0," " 1," " 0," " 1," " 0," " 1," " 0," " 0,"
4  "0," " 1," " 1," " 1," " 0," " 0," " 1," " 1," " 1,"
5  "1," " 0," " 1," " 0," " 0," " 1," " 0," " 1," " 1,"
6  "1," " 0," " 1," " 1," " 0," " 0," " 0," " 1," " 0,"
7  "1," " 0," " 1," " 0," " 0," " 1," " 1," " 1," " 1,"
8  "0," " 1," " 0," " 1," " 0," " 1," " 0," " 1," " 1,"
9  "1," " 1," " 1," " 0," " 0," " 1," " 0," " 1," " 0,"
10 "0," " 0," " 0," " 0," " 0," " 1," " 0," " 0," " 1,"

Answer 2

编辑：不是您指定的输出但可能对其他人有用？

apply(dataf, 1, paste0, collapse = "")

产量：

[1] "0000000101" "0100100111" "1110101001" "1001010101" "1011111100" "1010000111"
[7] "0110001110" "1111000011" "1001101000" "0010011010"

这是您希望的结果吗？

Answer 3

尝试：capture.output(write.table(lapply(dataf, as.character), row.names=F, col.names=F, sep=","))

 [1] "\"0\",\"0\",\"0\",\"0\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\""
 [2] "\"1\",\"0\",\"1\",\"0\",\"0\",\"0\",\"1\",\"0\",\"1\",\"1\""
 [3] "\"0\",\"1\",\"0\",\"0\",\"1\",\"1\",\"0\",\"0\",\"1\",\"1\""
...

根据下面马修的评论进行编辑

Answer 4

这是另一个选项，类似于@Phil 的方法，但提供与@JayBlack 相同的输出。

apply(dataf, 1, function(.) paste(dQuote(.), collapse=','))

这 returns 下面的字符串向量。

 [1] "\"0\",\"0\",\"1\",\"0\",\"1\",\"1\",\"0\",\"0\",\"1\",\"1\""
 [2] "\"1\",\"0\",\"1\",\"1\",\"1\",\"0\",\"0\",\"0\",\"1\",\"0\""
 [3] "\"1\",\"1\",\"0\",\"1\",\"0\",\"0\",\"1\",\"1\",\"1\",\"1\""
 .....

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