rdflib

:package: High level wrapper around the redland package for common rdf applications

https://github.com/ropensci/rdflib

Science Score: 36.0%

This score indicates how likely this project is to be science-related based on various indicators:

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CITATION.cff file
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codemeta.json file
Found codemeta.json file
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.zenodo.json file
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Links to: zenodo.org
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Low similarity (21.4%) to scientific vocabulary

Keywords

peer-reviewed r r-package rstats

Keywords from Contributors

pandoc rmarkdown data-store git-lfs archiving dbi json-ld codemeta genome phylogenetics

Last synced: 9 months ago · JSON representation

Repository

:package: High level wrapper around the redland package for common rdf applications

Basic Info

Host: GitHub
Owner: ropensci
License: other
Language: HTML
Default Branch: master
Homepage: https://docs.ropensci.org/rdflib
Size: 5.11 MB

Statistics

Stars: 59
Watchers: 9
Forks: 10
Open Issues: 12
Releases: 9

Topics

peer-reviewed r r-package rstats

Created almost 9 years ago · Last pushed almost 2 years ago

Metadata Files

Readme Changelog License Codemeta

README.Rmd

---
output: github_document
---

# rdflib 

 
  [![R-CMD-check](https://github.com/ropensci/rdflib/workflows/R-CMD-check/badge.svg)](https://github.com/ropensci/rdflib/actions)
[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](http://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/)
[![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/rdflib)](https://cran.r-project.org/package=rdflib)
[![](http://badges.ropensci.org/169_status.svg)](https://github.com/ropensci/software-review/issues/169)
[![CRAN RStudio mirror downloads](http://cranlogs.r-pkg.org/badges/rdflib)](https://CRAN.R-project.org/package=rdflib)
[![DOI](https://zenodo.org/badge/100521776.svg)](https://zenodo.org/badge/latestdoi/100521776)
  



```{r, echo = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "README-"
)
```



A friendly and consise user interface for performing common
tasks on rdf data, such as parsing and converting between
formats including rdfxml, turtle, nquads, ntriples,
and trig, creating rdf graphs, and performing SPARQL
queries. This package wraps the redland R package which
provides direct bindings to the redland C library. Additionally,
the package supports parsing and serialization of rdf
into json-ld through the json-ld package, which binds
the official json-ld javascript API. The package
interface takes inspiration from the Python rdflib library.

## Installation

You can install rdflib from GitHub with:

```{r gh-installation, eval = FALSE}
# install.packages("devtools")
devtools::install_github("ropensci/rdflib")
```


## Basic use

While not required, `rdflib` is designed to play nicely with `%>%` pipes, so we will load the `magrittr` package as well:

```{r, message=FALSE}
library(magrittr)
library(rdflib)
```

Parse a file and serialize into a different format:

```{r parse}
system.file("extdata/dc.rdf", package="redland") %>%
  rdf_parse() %>%
  rdf_serialize("test.nquads", "nquads")
```


Perform SPARQL queries:

```{r sparql}
sparql <-
 'PREFIX dc: 
  SELECT ?a ?c
  WHERE { ?a dc:creator ?c . }'

system.file("extdata/dc.rdf", package="redland") %>%
rdf_parse() %>%
rdf_query(sparql)
```

Initialize graph a new object or add triples statements to an existing graph:

```{r}
x <- rdf()
x <- rdf_add(x, 
    subject="http://www.dajobe.org/",
    predicate="http://purl.org/dc/elements/1.1/language",
    object="en")
x
```

Change the default display format (`nquads`) for graph objects:

```{r}
options(rdf_print_format = "jsonld")
x
```


## JSON-LD

We can also work with the JSON-LD format through additional functions provided in the 
R package, `jsonld`. 

```{r}
out <- tempfile()
rdf_serialize(x, out, "jsonld")
rdf_parse(out, format = "jsonld")
```

For more information on the JSON-LD RDF API, see .

```{r include=FALSE}
unlink("test.nquads")
unlink(out)
rdf_free(x)
```


## Advanced Use

See [articles](https://docs.ropensci.org/rdflib/articles/) from the documentation for advanced use including applications to large triplestores, example SPARQL queries, and information about additional database backends.  


----

## Citing rdflib


Please also cite the underlying `redland` library when citing `rdflib`

```{r results="asis", warning=FALSE, echo=FALSE}
print(citation("rdflib"), "textVersion")
```

```{r results="asis", warning=FALSE, echo=FALSE}
print(citation("redland"), "text")
```

```{r include=FALSE}
codemeta::write_codemeta()
```


[![rofooter](https://ropensci.org//public_images/github_footer.png)](https://ropensci.org/)

Owner

Name: rOpenSci
Login: ropensci
Kind: organization
Email: info@ropensci.org
Location: Berkeley, CA

Website: https://ropensci.org/
Twitter: rOpenSci
Repositories: 307
Profile: https://github.com/ropensci

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Total Commits: 223
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Avg Commits per committer: 27.875
Development Distribution Score (DDS): 0.049

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Commits: 1
Committers: 1
Avg Commits per committer: 1.0
Development Distribution Score (DDS): 0.0

Top Committers

Name	Email	Commits
Carl Boettiger	c**g@g**m	212
Carl Boettiger	c**g@g**m	3
mark padgham	m**m@e**m	2
Jeroen Ooms	j**s@g**m	2
pdatascience	d**e@p**t	1
olivroy	5****y	1
Katrin Leinweber	9****r	1
Jim Hester	j**r@g**m	1

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Average comments per pull request: 1.18
Merged pull requests: 11
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Packages

Total packages: 1
Total downloads:
- cran 1,690 last-month
Total docker downloads: 130,589

Total dependent packages: 5
Total dependent repositories: 14
Total versions: 11
Total maintainers: 1

cran.r-project.org: rdflib

Tools to Manipulate and Query Semantic Data

Homepage: https://docs.ropensci.org/rdflib/
Documentation: http://cran.r-project.org/web/packages/rdflib/rdflib.pdf
License: MIT + file LICENSE
Latest release: 0.2.9
published almost 2 years ago

Versions: 11
Dependent Packages: 5
Dependent Repositories: 14
Downloads: 1,690 Last month
Docker Downloads: 130,589

Rankings

Docker downloads count: 0.0%

Stargazers count: 6.4%

Average: 7.3%

Forks count: 7.3%

Dependent repos count: 7.7%

Dependent packages count: 8.2%

Downloads: 14.3%

Maintainers (1)

cboettig@gmail.com

Last synced: 9 months ago

Dependencies

DESCRIPTION cran

dplyr * imports
jsonld * imports
methods * imports
readr * imports
redland * imports
stringi * imports
tidyr * imports
utils * imports
DT * suggests
covr * suggests
httr * suggests
jqr * suggests
jsonlite * suggests
knitr * suggests
lubridate * suggests
magrittr * suggests
nycflights13 * suggests
purrr * suggests
repurrrsive * suggests
rmarkdown * suggests
spelling * suggests
testthat * suggests
tibble * suggests
xml2 * suggests

.github/workflows/R-CMD-check.yaml actions

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r-lib/actions/setup-pandoc v2 composite
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r-lib/actions/setup-r-dependencies v2 composite

docker-compose.yml docker

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postgres latest
ropensci/rdflib latest

inst/docker/Dockerfile docker

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inst/docker/cli/Dockerfile docker

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