R 如何从整洁的数据创建json字符串
您好,我有一组CSV文件,需要导入mongo DB 我的数据已经很整洁了,我想把它弄乱以创建可以导入的json对象 例如:R 如何从整洁的数据创建json字符串,r,R,您好,我有一组CSV文件,需要导入mongo DB 我的数据已经很整洁了,我想把它弄乱以创建可以导入的json对象 例如: client, receipt, total 1 101 $10 1 102 $11 2 201 $10 我想创建json字符串列表,如: list: [1] { "client":1, "receipts":[ { "receipt":101,
client, receipt, total
1 101 $10
1 102 $11
2 201 $10
我想创建json字符串列表,如:
list:
[1]
{
"client":1,
"receipts":[
{
"receipt":101,
"charge":10
},
{
"receipt":102,
"charge":11
}
]
}
[2]
{
"client":2,
"receipts":[
{
"receipt":201,
"charge":10
}
]
}
这本来应该是一个简单的问题,但看起来所有的谷歌搜索结果都在讨论如何将json放入一个整洁的data.frame中。你可以这样做
df<-read.table(header=T, text="client receipt charge
1 101 10
1 102 11
2 201 10")
library(jsonlite)
library(tidyverse)
df %>%
nest(-client, .key = receipts) %>%
split(.$client) %>%
map(~toJSON(unbox(.x), pretty=TRUE))
# $`1`
# {
# "client": 1,
# "receipts": [
# {
# "receipt": 101,
# "charge": 10
# },
# {
# "receipt": 102,
# "charge": 11
# }
# ]
# }
#
# $`2`
# {
# "client": 2,
# "receipts": [
# {
# "receipt": 201,
# "charge": 10
# }
# ]
# }
df%
嵌套(-client,.key=receipts)%>%
拆分(.$client)%>%
map(~toJSON(unbox(.x),pretty=TRUE))
# $`1`
# {
#“客户”:1,
#“收据”:[
# {
#“收据”:101,
#“费用”:10
# },
# {
#“收据”:102,
#“费用”:11
# }
# ]
# }
#
# $`2`
# {
#“客户”:2,
#“收据”:[
# {
#“收据”:201,
#“费用”:10
# }
# ]
# }
Luke很有魅力,谢谢。我有一个类似的想法,但你成功了。