tuRtle

The goal of tuRtle is to parse or export R data with the Turtle syntax for the Resource Description Framework (RDF). This is a very early version that is being co-developed with the dataset package.

Installation

You can install the development version of tuRtle with remotes::install_github():

remotes::install_github("dataobservatory-eu/tuRtle", build = FALSE)

Example

Let us organise statements into a table of s subject, p predicate and o object:

tdf <- data.frame(
  s = c("eg:01", "eg:02", "eg:01", "eg:02", "eg:01"),
  p = c("a", "a", "eg-var:", "eg-var:", "rdfs:label"),
  o = c(
    "qb:Observation",
    "qb:Observation",
    "\"1\"^^<xs:decimal>",
    "\"2\"^^<xs:decimal>",
    '"Example observation"'
  )
)

knitr::kable(tdf)

s	p	o
eg:01	a	qb:Observation
eg:02	a	qb:Observation
eg:01	eg-var:	“1”
eg:02	eg-var:	“2”
eg:01	rdfs:label	“Example observation”

The Turtle serialisation is this, written into an example_file. The parameter ttl_namespace = NULL results in using the default prefixes of the dataset package.

library(tuRtle)
example_file <- file.path(tempdir(), "example_ttl.ttl")
ttl_write(tdf = tdf, ttl_namespace = NULL, file_path = example_file)

readLines(example_file)

Code of Conduct

Please note that the tuRtle project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.