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https://github.com/ropensci/jsonld

R wrapper for jsonld.js JavaScript library
https://github.com/ropensci/jsonld

json-ld r r-package rstats

Last synced: about 2 months ago
JSON representation

R wrapper for jsonld.js JavaScript library

Host: GitHub
URL: https://github.com/ropensci/jsonld
Owner: ropensci
License: other
Created: 2016-12-06T15:10:25.000Z (over 7 years ago)
Default Branch: master
Last Pushed: 2020-06-03T17:23:31.000Z (about 4 years ago)
Last Synced: 2024-04-07T05:02:09.416Z (3 months ago)
Topics: json-ld, r, r-package, rstats
Language: R
Homepage: https://docs.ropensci.org/jsonld
Size: 393 KB
Stars: 33
Watchers: 8
Forks: 0
Open Issues: 12
Metadata Files:
- Readme: README.md
- License: LICENSE

Lists

README

        # jsonld

> JSON for Linking Data

[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](http://www.repostatus.org/badges/latest/active.svg)](http://www.repostatus.org/#active)

[![Build Status](https://travis-ci.org/ropensci/jsonld.svg?branch=master)](https://travis-ci.org/ropensci/jsonld)

[![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/github/ropensci/jsonld?branch=master&svg=true)](https://ci.appveyor.com/project/jeroen/jsonld)

[![Coverage Status](https://codecov.io/github/ropensci/jsonld/coverage.svg?branch=master)](https://codecov.io/github/ropensci/jsonld?branch=master)

[![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/jsonld)](https://cran.r-project.org/package=jsonld)

[![CRAN RStudio mirror downloads](http://cranlogs.r-pkg.org/badges/jsonld)](https://cran.r-project.org/package=jsonld)

[![Github Stars](https://img.shields.io/github/stars/ropensci/jsonld.svg?style=social&label=Github)](https://github.com/ropensci/jsonld)

JSON-LD is a light-weight syntax for expressing linked data. It is primarily

intended for web-based programming environments, interoperable web services and for 

storing linked data in JSON-based databases. This package provides bindings to the 

JavaScript library for converting, expanding and compacting JSON-LD documents.

## Hello World

Example from https://github.com/digitalbazaar/jsonld.js#quick-examples. Example data:

```r

doc <- '{

  "http://schema.org/name": "Manu Sporny",

  "http://schema.org/url": {"@id": "http://manu.sporny.org/"},

  "http://schema.org/image": {"@id": "http://manu.sporny.org/images/manu.png"}

}'

context <- '{

  "name": "http://schema.org/name",

  "homepage": {"@id": "http://schema.org/url", "@type": "@id"},

  "image": {"@id": "http://schema.org/image", "@type": "@id"}

}'

```

### Compact and expand:

```r

(out <- jsonld_compact(doc, context))

```

```

{

  "@context": {

    "name": "http://schema.org/name",

    "homepage": {

      "@id": "http://schema.org/url",

      "@type": "@id"

    },

    "image": {

      "@id": "http://schema.org/image",

      "@type": "@id"

    }

  },

  "image": "http://manu.sporny.org/images/manu.png",

  "name": "Manu Sporny",

  "homepage": "http://manu.sporny.org/"

} 

```

```r

(expanded <- jsonld_expand(out))

```

```

[

  {

    "http://schema.org/url": [

      {

        "@id": "http://manu.sporny.org/"

      }

    ],

    "http://schema.org/image": [

      {

        "@id": "http://manu.sporny.org/images/manu.png"

      }

    ],

    "http://schema.org/name": [

      {

        "@value": "Manu Sporny"

      }

    ]

  }

] 

```

### Convert between JSON and RDF:

```r

cat(nquads <- jsonld_to_rdf(doc))

```

```

_:b0   .

_:b0  "Manu Sporny" .

_:b0   .

```

```r

jsonld_from_rdf(nquads)

```

```

[

  {

    "@id": "_:b0",

    "http://schema.org/image": [

      {

        "@id": "http://manu.sporny.org/images/manu.png"

      }

    ],

    "http://schema.org/name": [

      {

        "@value": "Manu Sporny"

      }

    ],

    "http://schema.org/url": [

      {

        "@id": "http://manu.sporny.org/"

      }

    ]

  }

] 

```

### Other utilities:

```r

jsonld_flatten(doc)

```

```

[

  {

    "@id": "_:b0",

    "http://schema.org/image": [

      {

        "@id": "http://manu.sporny.org/images/manu.png"

      }

    ],

    "http://schema.org/name": [

      {

        "@value": "Manu Sporny"

      }

    ],

    "http://schema.org/url": [

      {

        "@id": "http://manu.sporny.org/"

      }

    ]

  }

] 

```

```r

cat(jsonld_normalize(doc, algorithm = 'URDNA2015', format = 'application/nquads'))

```

```

_:c14n0   .

_:c14n0  "Manu Sporny" .

_:c14n0   .

```