Get Age data from PBDB to pair to the tips of trees

For each nexus dataset, locate an XML file containing ages. If any are missing, query PBDB to see if they can be found. Returns a TSV-file of ages per tip.

build_ages(data_path, xml_path, out_path)

Arguments

data_path	A path to nexus datafiles
xml_path	A path to xml metadata for each dataset
outpath	Where you'd like to write the data to.

Value

AgesMatrix A dataframe of taxa and their minimum and maximum occurrence