span | R Documentation |
Parse taxon or taxondf objects by a range of names
span(.data, ...)
.data |
Input, object of class taxon |
... |
Pass in two unquoted taxonomic rank names, and only two. May make this more flexible in the future. |
A single or list of taxon
class objects
# operating on `taxon` objects out <- make_taxon(genus="Poa", epithet="annua", authority="L.", family='Poaceae', clazz='Poales', kingdom='Plantae', variety='annua') out %>% span(kingdom, genus) # operating on taxonomic data.frames df <- data.frame(class=c('Magnoliopsida','Magnoliopsida','Magnoliopsida', 'Magnoliopsida','Magnoliopsida','Magnoliopsida'), order=c('Asterales','Asterales','Fagales','Poales','Poales','Poales'), family=c('Asteraceae','Asteraceae','Fagaceae','Poaceae','Poaceae','Poaceae'), genus=c('Helianthus','Helianthus','Quercus','Poa','Festuca','Holodiscus'), stringsAsFactors = FALSE) (df2 <- taxon_df(df)) ## filter to get a range of classes df2 %>% span(order, genus) df2 %>% span(family, genus) ## from taxa object df2 %>% scatter %>% span(family, species)
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