R json到数据帧
我有一个R json到数据帧,r,R,我有一个data.json文件,如下所示: { "A" : { "data" : "a1 aa2 aaa3\na4 aa5 aaa6\na7 aa8 aaa9" }, "B" : { "data" : "b1 bb2 bbb3\nb4 bb5 bbb6\nb7 bb8 bbb9" }, "C" : { "data" : "c1 cc2 ccc3\nc4 cc5 ccc6\nc7 cc8 ccc9" } } > print(output[[1
data.json
文件,如下所示:
{
"A" : {
"data" : "a1 aa2 aaa3\na4 aa5 aaa6\na7 aa8 aaa9"
},
"B" : {
"data" : "b1 bb2 bbb3\nb4 bb5 bbb6\nb7 bb8 bbb9"
},
"C" : {
"data" : "c1 cc2 ccc3\nc4 cc5 ccc6\nc7 cc8 ccc9"
}
}
> print(output[[1]])
X1 X2 X3
1 a1 aa2 aaa3
2 a4 aa5 aaa6
3 a7 aa8 aaa9
> print(output[[2]])
X1 X2 X3
1 b1 bb2 bbb3
2 b4 bb5 bbb6
3 b7 bb8 bbb9
#and so on...
我想将其转换为数据帧列表(称为output
),每个大写字母对应一个data.frame。字符串“\n”
区分数据帧中的行。每个数据帧应如下所示:
{
"A" : {
"data" : "a1 aa2 aaa3\na4 aa5 aaa6\na7 aa8 aaa9"
},
"B" : {
"data" : "b1 bb2 bbb3\nb4 bb5 bbb6\nb7 bb8 bbb9"
},
"C" : {
"data" : "c1 cc2 ccc3\nc4 cc5 ccc6\nc7 cc8 ccc9"
}
}
> print(output[[1]])
X1 X2 X3
1 a1 aa2 aaa3
2 a4 aa5 aaa6
3 a7 aa8 aaa9
> print(output[[2]])
X1 X2 X3
1 b1 bb2 bbb3
2 b4 bb5 bbb6
3 b7 bb8 bbb9
#and so on...
只需使用rjson/jsonlite库以列表的形式加载json文件,并使用
read.table
函数以数据帧的形式读取每个字符串:
lapply(rjson::fromJSON(file = "data.json"), function(x) read.table(text = x$data))
#$A
# V1 V2 V3
#1 a1 aa2 aaa3
#2 a4 aa5 aaa6
#3 a7 aa8 aaa9
#$B
# V1 V2 V3
#1 b1 bb2 bbb3
#2 b4 bb5 bbb6
#3 b7 bb8 bbb9
#$C
# V1 V2 V3
#1 c1 cc2 ccc3
#2 c4 cc5 ccc6
#3 c7 cc8 ccc9
您是否尝试过像“jsonlite”这样的包来帮助您操作JSON对象?还没有,我只是用rjson库加载了JSON文件