R create JSON in R

Question

I want to get to get the values from this JSON string: { "item": [ { "value": 142 } , { "value": 200 } ] }

R code:

library(rjson)
item <- list(item=c(value= 142,value=200))
toJSON(item)

And I have:

> toJSON(item)
[1] "{\"item\":{\"value\":142,\"value\":200}}"

How do I get the values from the json string in R?

Does `item` _have_ to be in that structure or can you do something like what @cory suggests in his answer. Also, you should show a `library(rjson)` in your question text even if you have it as a tag. There are a plethora of JSON packages for R. — hrbrmstr, Jun 10 '15 at 11:43

score 1 · Answer 1 · answered Jun 10 '15 at 11:40

Discussion of I() and what it does is in the RJSONIO documentation, but that's what you are looking for...

library("RJSONIO")
item <- list(item=I(list(list(value= 142),list(value=200))))
> toJSON(item)
[1] "{\n \"item\": [\n {\n \"value\":    142 \n},\n{\n \"value\":    200 \n} \n] \n}"

R create JSON in R

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