将变量转换为csv字符串。

I would like to know how to convert a variable in R to csv string.

我想知道如何将R中的变量转换成csv字符串。

> x = c(1:10)
> a = write.csv(x)
"","x"
"1",1
"2",2
"3",3
"4",4
"5",5
"6",6
"7",7
"8",8
"9",9
"10",10
> a
NULL
>

I want to have the CSV string in variable 'a'.

我想用变量'a'中的CSV字符串。

Thanks

谢谢

2 个解决方案

#1

Things can be so simple ....

东西可以如此简单....

 > zz <- textConnection("foo1", "w") 
 > textConnectionValue(zz) 
 character(0) 
 > write.csv(x, zz) 
 > textConnectionValue(zz) 
 [1] "\"\",\"x\"" "\"1\",1" "\"2\",2" "\"3\",3" "\"4\",4" 
 [6] "\"5\",5" "\"6\",6" "\"7\",7" "\"8\",8" "\"9\",9" 
 [11] "\"10\",10"
 >

#2

Here's an alternative, even easier:

这里有一个更简单的选择:

foo2 <- capture.output(write.csv(matrix(1:6,nrow=2), stdout(), row.names=F)) 
foo2
## "\"V1\",\"V2\",\"V3\"" "1,3,5"                "2,4,6"

Probably what you want is:

也许你想要的是:

foo2[-1,]    
## "\"V1\",\"V2\",\"V3\"" "1,3,5"                "2,4,6"

#1