Saving a JSON object to file.JSON

io, json, r

Solution

You can use `write`:

library(RJSONIO)
list1 <- vector(mode="list", length=2)
list1[[1]] <- c("a", "b", "c")
list1[[2]] <- c(1, 2, 3)

exportJson <- toJSON(list1)
> exportJson
[1] "[\n [ \"a\", \"b\", \"c\" ],\n[      1,      2,      3 ] \n]"
write(exportJson, "test.json")
library("rjson")
json_data <- fromJSON(file="test.json")
> json_data
[[1]]
[1] "a" "b" "c"

[[2]]
[1] 1 2 3

Problem

I've create a JSON file, and I need to be able to share the file via email with other collaborators. However, although there are plenty of topics available on handling JSON objects in the R workspace, there are virtually no resources discussing how to actually export a JSON object to a .JSON file. Here's a simple example: ``` list1 <- vector(mode="list", length=2) list1[[1]] <- c("a", "b", "c") list1[[2]] <- c(1, 2, 3) exportJson <- toJSON(list1) ## Save the JSON to file save(exportJson, file="export.JSON") ## Attempt to read in the JSON library("rjson") json_data <- fromJSON(file="export.JSON") ``` The final line, attempting to read in the JSON file, results in an error: "Error in fromJSON(file = "export.JSON") : unexpected character 'R'" Obviously the save() function is not the way to go, but after extensive googling, I have found nothing that says how to export the JSON to a file. Any help would be greatly appreciated.

Original source