Write statements into a TTL file

Usage

ttl_statements_write(tdf, file_path, overwrite = TRUE)

Arguments

tdf: A dataset in exactly three columns.
file_path: The path to the file that should be written or appended.
overwrite: If the file exists, overwrite it? Defaults to TRUE.

Examples

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"'))

examplefile <- file.path(tempdir(), "ttl_dataset_write.ttl")

dataset_ttl_write(tdf=tdf, file_path = examplefile)
#> Warning: data set ‘dataset_namespace’ not found
#> Error in apply(ttl_namespace, 1, function(x) {    prefix <- x[[1]]    n <- max(12 - nchar(x[[1]]), 1)    separator <- paste(rep(" ", n), collapse = "")    paste0("@prefix  ", prefix, separator, x[[2]], " .")}): dim(X) must have a positive length

readLines(examplefile)
#> Warning: cannot open file '/tmp/RtmpT3Vm5W/ttl_dataset_write.ttl': No such file or directory
#> Error in file(con, "r"): cannot open the connection