toJSON()

Apart from converting JSON to R with fromJSON(), you can also use toJSON() to convert R data to a JSON format. In its most basic use, you simply pass this function an R object to convert to a JSON. The result is an R object of the class json, which is basically a character string representing that JSON.

For this exercise, you will be working with a .csv file containing information on the amount of desalinated water that is produced around the world. As you'll see, it contains a lot of missing values. This data can be found on the URL that is specified in the sample code.

Use a function of the utils package to import the .csv file directly from the URL specified in url_csv. Save the resulting data frame as water. Make sure that strings are not imported as factors.
Convert the data frame water to a JSON. Call the resulting object water_json.
Print out water_json.

Exercise

toJSON()

Instructions