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This package contains three mapping objects:
* data/speciesMap.rda: A data frame with columns 'tax_id', 'genus', and
'species'. Used to retrieve taxonomy ID by species and returns list of
available species.
* data/validTaxIds.rda: An integer vector of valid taxonomy IDs created
from 'speciesMap'. Used internally for quick taxonomy ID look ups.
* data/specData.rds: A data frame with columns 'taxon' and 'species'.
Used internally to retrieve species by taxonomy ID.
Scripts to generate these files are in inst/scripts.
All originate from the public taxonomy dump at
ftp://ftp.ncbi.nih.gov/pub/taxonomy/taxdump.tar.gz
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