Get ids of the children of some taxa

Get ids of the children of some taxa

children(taxon_ids, taxo, simplify = TRUE)

Arguments

taxon_ids	internal, numeric ids of the taxa.
taxo	a taxonomy data.frame, typically from extract_taxo().
simplify	when taxon_ids contains only one taxon and simplify is TRUE, return the vector of ids of the children directly, not a list of length one.

Value

A list of vectors of taxon ids, as long as the input, containing the ids of the children of each element in taxon_ids.

Details

The function works per taxon but is vectorised over taxon_ids.

See also

Other taxonomy-related functions: ancestors(), as.taxo(), descendants(), extract_taxo(), is_leaf(), lineage(), parent(), taxo_id(), taxo_name()

Examples

print(as.Node(taxo), "id")
#>             levelName id
#> 1 #                   NA
#> 2  °--living           1
#> 3      ¦--fish         2
#> 4      ¦   °--egg      4
#> 5      °--mollusc      3
#> 6          ¦--snail    5
#> 7          ¦   °--egg  7
#> 8          °--squid    6
children(3, taxo)
#> [1] 5 6
children(1:4, taxo)
#> [[1]]
#> [1] 2 3
#> 
#> [[2]]
#> [1] 4
#> 
#> [[3]]
#> [1] 5 6
#> 
#> [[4]]
#> numeric(0)
#> 
children(c(5, NA), taxo)
#> [[1]]
#> [1] 7
#> 
#> [[2]]
#> [1] NA
#> 
if (FALSE)  children(12, taxo)