Provides functions to retrieve data and metadata from providers 
			 that disseminate data by means of SDMX web services. 
			 SDMX (Statistical Data and Metadata eXchange) is a standard that 
			 has been developed with the aim of simplifying the exchange of 
			 statistical information. 
			 More about the SDMX standard and the SDMX Web Services 
			 can be found at: <https://sdmx.org>.

Converts R object into JSON objects and vice-versa.

Functions to query (filter or transform), pivot (convert
    from array-of-objects to object-of-arrays, for easy import as 'R'
    data frame), search, patch (edit), and validate (against 'JSON Schema')
    'JSON' and 'NDJSON' strings, files, or URLs. Query and
    pivot support 'JSONpointer', 'JSONpath' or 'JMESpath'
    expressions. The implementation uses the 'jsoncons'
    <https://danielaparker.github.io/jsoncons/> header-only library;
    the library is easily linked to other packages for direct access
    to 'C++' functionality not implemented here.

This is a package that allows conversion to and from 
  data in Javascript object notation (JSON) format.
  This allows R objects to be inserted into Javascript/ECMAScript/ActionScript code
  and allows R programmers to read and convert JSON content to R objects.
  This is an alternative to rjson package. Originally, that was too slow for converting large R objects to JSON
  and was not extensible.  rjson's performance is now similar to this package, and perhaps slightly faster in some cases.
  This package uses methods and is readily extensible by defining methods for different classes, 
  vectorized operations, and C code and callbacks to R functions for deserializing JSON objects to R. 
  The two packages intentionally share the same basic interface. This package (RJSONIO) has many additional
  options to allow customizing the generation and processing of JSON content.
  This package uses libjson rather than implementing yet another JSON parser. The aim is to support
  other general projects by building on their work, providing feedback and benefit from their ongoing development.