Strategies for formatting JSON output from R

Question

I\'m trying to figure out the best way of producing a JSON file from R. I have the following dataframe tmp in R.

> tmp
  gender         


        

Answer 1

Building upon Andrie's idea with apply, you can get exactly what you want by modifying the tmp variable before calling toJSON.

library(RJSONIO)
modified <- list(
  traits = colnames(tmp),
  values = unname(apply(tmp, 1, function(x) as.data.frame(t(x))))
)
cat(toJSON(modified))