Abstract
In this chapter, we describe the JSON format and then the fromJSON() and toJSON() functions to both read and create JSON content. Because JSON is so simple and there are few supporting technologies for JSON, there are not many details that we need to examine before being able to work with JSON effectively. As a result, we spend a significant part of this chapter illustrating how we work with JSON in different contexts. These display other technologies that use JSON which are interesting in their own right. We look at reading JSON data from both Web services and from local files. We also show how to serialize data from R to JSON in order to add it to interactive HTML and SVG documents. Finally, we explore the ElasticSearch text search engine and how we use JSON to both insert documents into the engine and receive query results from the engine.
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Nolan, D., Lang, D.T. (2014). JavaScript Object Notation. In: XML and Web Technologies for Data Sciences with R. Use R!. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7900-0_7
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