toJSON: Convert R To JSON
In rjson: JSON for R

Description Usage Arguments Value See Also Examples

View source: R/json.R

Convert an R object into a corresponding JSON object.

***Lists with unnamed components are not currently supported***

1	toJSON( x, indent=0, method="C" )

`x`	a vector or list to convert into a JSON object
`indent`	an integer specifying how much indentation to use when formatting the JSON object; if 0, no pretty-formatting is used
`method`	use the `C` implementation, or the older slower (and one day to be depricated) `R` implementation

a string containing the JSON object

fromJSON

x <- list( alpha = 1:5, beta = "Bravo", 
           gamma = list(a=1:3, b=NULL), 
           delta = c(TRUE, FALSE) )
json <- toJSON( x )
fromJSON( json )


#named vectors are treated as JSON objects (lists)
toJSON(islands[1:4])


#data.frames must be converted into a list before converting into JSON
plot(cars, pch=2)
json_cars <- toJSON(as.list(cars))
points( data.frame( fromJSON( json_cars ) ), col="red", pch=3 )

#special R types are encoded as strings
testString <- c(1,2,3,4,NA,NaN,Inf,8,9);
toJSON(testString);