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I have a dataframe and I want to create individual JSON files and use one of the column names to name each of the JSON files.

The following code will create multiple CSV files, but instead I want JSON. I am using the iris dataset from plyr.

library(plyr)
d_ply(iris, .(Species), function(x) write.csv(x, file = paste(unique(x$Species), ".csv", sep = "")))
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    There are many packages that handle JSON in R: jsonlite, RJSONIO, rjson and others. Commented Dec 21, 2016 at 20:51
  • iris isn't from plyr Commented Dec 21, 2016 at 21:04
  • apply(iris, 2, jsonlite::toJSON) will give you JSON for each column. Commented Dec 21, 2016 at 21:05

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As Nicola suggests, there are many packages for producing JSON. Adapting your d_ply code:

library(jsonlite)
d_ply(iris, .(Species), function(x) {
    writeLines(toJSON(x), file = paste0(x$Species[1], ".json"))
})
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