which_in_eml | R Documentation |
which_in_eml(doc, element, test)
doc |
(list) An EML object. |
element |
(character) Element to evaluate. |
test |
(function/character) A function to evaluate (see examples). If test is a character,
will evaluate if |
please use eml_get_simple() and which() together instead
This function returns indices within an EML list that contain an instance where
test == TRUE
. See examples for more information.
Mitchell Maier mitchell.maier@gmail.com
## Not run:
# Question: Which creators have a surName "Smith"?
n <- which_in_eml(eml$dataset$creator, "surName", "Smith")
# Answer: eml$dataset$creator[n]
# Question: Which dataTables have an entityName that begins with "2016"
n <- which_in_eml(eml$dataset$dataTable, "entityName", function(x) {grepl("^2016", x)})
# Answer: eml$dataset$dataTable[n]
# Question: Which attributes in dataTable[[1]] have a numberType "natural"?
n <- which_in_eml(eml$dataset$dataTable[[1]]$attributeList$attribute, "numberType", "natural")
# Answer: eml$dataset$dataTable[[1]]$attributeList$attribute[n]
#' # Question: Which dataTables have at least one attribute with a numberType "natural"?
n <- which_in_eml(eml$dataset$dataTable, "numberType", function(x) {"natural" %in% x})
# Answer: eml$dataset$dataTable[n]
## End(Not run)
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