Convert an XPT file to Dataset-JSON — xpt_to_json • herald

Reads an XPT transport file and writes it as CDISC Dataset-JSON v1.1. All metadata (labels, formats, lengths) is preserved.

Usage

xpt_to_json(xpt_path, json_path, dataset = NULL, label = NULL)

Arguments

xpt_path: Path to a .xpt file.
json_path: Output path for the .json file.
dataset: Dataset name override. Default: inferred from file name.
label: Dataset label override. Default: from XPT header.

Value

The output path, invisibly.

See also

json_to_xpt() for the reverse, read_xpt(), write_json().

Other io: json_to_xpt(), read_json(), write_json()

Examples

dm <- data.frame(STUDYID = "S1", AGE = 65L, stringsAsFactors = FALSE)
xpt <- tempfile(fileext = ".xpt")
json <- tempfile(fileext = ".json")
write_xpt(dm, xpt, dataset = "DM", label = "Demographics")
xpt_to_json(xpt, json)
read_json(json)
#>   STUDYID AGE
#> 1      S1  65
unlink(c(xpt, json))