Retrieve all taxa names or TSNs downstream in hierarchy from given TSN.
Retrieve all taxa names or TSNs downstream in hierarchy from given TSN.
itis_downstream(id, downto, intermediate = FALSE, tsns = NULL, ...)
id |
A taxonomic serial number. |
downto |
The taxonomic level you want to go down to. See examples below.
The taxonomic level IS case sensitive, and you do have to spell it
correctly. See |
intermediate |
(logical) If TRUE, return a list of length two with target taxon rank names, with additional list of data.frame's of intermediate taxonomic groups. Default: FALSE |
tsns |
Deprecated, see |
... |
Further args passed on to |
Data.frame of taxonomic information downstream to family from e.g.,
Order, Class, etc., or if intermediated=TRUE, list of length two,
with target taxon rank names, and intermediate names.
## Not run: ## the plant class Bangiophyceae, tsn 846509 itis_downstream(id = 846509, downto="genus") itis_downstream(id = 846509, downto="genus", intermediate=TRUE) # get families downstream from Acridoidea itis_downstream(id = 650497, "family") ## here, intermediate leads to the same result as the target itis_downstream(id = 650497, "family", intermediate=TRUE) # get species downstream from Ursus itis_downstream(id = 180541, "species") # get orders down from the Division Rhodophyta (red algae) itis_downstream(id = 660046, "order") itis_downstream(id = 660046, "order", intermediate=TRUE) # get tribes down from the family Apidae itis_downstream(id = 154394, downto="tribe") itis_downstream(id = 154394, downto="tribe", intermediate=TRUE) ## End(Not run)
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