add_meta | R Documentation |
Add metadata to a nexml file
add_meta( meta, nexml = new("nexml"), level = c("nexml", "otus", "trees", "characters"), namespaces = NULL, i = 1, at_id = NULL )
meta |
a meta S4 object, e.g. ouput of the function |
nexml |
(S4) object |
level |
the level at which the metadata annotation should be added. |
namespaces |
named character string for any additional namespaces that should be defined. |
i |
for otus, trees, characters: if there are multiple such blocks, which one should be annotated? Default is first/only block. |
at_id |
the id of the element to be annotated. Optional, advanced use only. |
the updated nexml object
meta
add_trees
add_characters
add_basic_meta
## Create a new nexml object with a single metadata element: modified <- meta(property = "prism:modificationDate", content = "2013-10-04") nex <- add_meta(modified) # Note: 'prism' is defined in nexml_namespaces by default. ## Write multiple metadata elements, including a new namespace: website <- meta(href = "http://carlboettiger.info", rel = "foaf:homepage") # meta can be link-style metadata nex <- add_meta(list(modified, website), namespaces = c(foaf = "http://xmlns.com/foaf/0.1/")) ## Append more metadata, and specify a level: history <- meta(property = "skos:historyNote", content = "Mapped from the bird.orders data in the ape package using RNeXML") data(bird.orders) nex <- add_trees(bird.orders) # need to have created a trees block first nex <- add_meta(history, nexml = nex, level = "trees", namespaces = c(skos = "http://www.w3.org/2004/02/skos/core#"))
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