search_treebase {treebase}

A function to pull in the phyologeny/phylogenies matching a search query

Description

A function to pull in the phyologeny/phylogenies matching a search query

Usage

search_treebase(
  input,
  by,
  returns = c("tree", "matrix"),
  exact_match = FALSE,
  max_trees = Inf,
  branch_lengths = FALSE,
  curl = getCurlHandle(),
  verbose = TRUE,
  pause1 = 0,
  pause2 = 0,
  attempts = 3,
  only_metadata = FALSE
)

Arguments

input

a search query (character string)

by

the kind of search; author, taxon, subject, study, etc (see list of possible search terms, details)

returns

should the fn return the tree or the character matrix?

exact_match

force exact matching for author name, taxon, etc. Otherwise does partial matching

max_trees

Upper bound for the number of trees returned, good for keeping possibly large initial queries fast

branch_lengths

logical indicating whether should only return trees that have branch lengths.

curl

the handle to the curl web utility for repeated calls, see the getCurlHandle() function in RCurl package for details.

verbose

logical indicating level of progress reporting

pause1

number of seconds to hesitate between requests

pause2

number of seconds to hesitate between individual files

attempts

number of attempts to access a particular resource

only_metadata

option to only return metadata about matching trees which lists study.id, tree.id, kind (gene,species,barcode) type (single, consensus) number of taxa, and possible quality score.

Value

either a list of trees (multiphylo) or a list of character matrices

Examples

## Not run: 
## defaults to return phylogeny
Huelsenbeck <- search_treebase("Huelsenbeck", by="author")

## can ask for character matrices:
wingless <- search_treebase("2907", by="id.matrix", returns="matrix")

## Some nexus matrices don't meet read.nexus.data's strict requirements,
## these aren't returned
H_matrices <- search_treebase("Huelsenbeck", by="author", returns="matrix")

## Use Booleans in search: and, or, not
## Note that by must identify each entry type if a Boolean is given
HR_trees <- search_treebase("Ronquist or Hulesenbeck", by=c("author", "author"))

## We'll often use max_trees in the example so that they run quickly,
## notice the quotes for species.
dolphins <- search_treebase('"Delphinus"', by="taxon", max_trees=5)
## can do exact matches
humans <- search_treebase('"Homo sapiens"', by="taxon", exact_match=TRUE, max_trees=10)
## all trees with 5 taxa
five <- search_treebase(5, by="ntax", max_trees = 10)
## These are different, a tree id isn't a Study id.  we report both
studies <- search_treebase("2377", by="id.study")
tree <- search_treebase("2377", by="id.tree")
c("TreeID" = tree$Tr.id, "StudyID" = tree$S.id)
## Only results with branch lengths
## Has to grab all the trees first, then toss out ones without branch_lengths
Near <- search_treebase("Near", "author", branch_lengths=TRUE)
 
## End(Not run)