An R package for mining species list, diversity estimates, and distribution data for any genus or family of flowering plants from RBG Kew’s Plants of the World Online (POWO).
The main goal of the expowo package is to retrieve
information about the diversity and distribution of any plant family as
publicly available at the taxonomically verified database Plants of the World Online
(POWO). The package is intended to efficiently mine the content
within the source HTML pages for any specific genus and family. It can
return a comma-separated values (CSV) file with the number of accepted
species and country-level distribution for any genus as well as the full
list of accepted species in any genus or family, their authorship,
original publication and global distribution. The latest major function
powoMap, also can automatically create global
maps for any taxon level.
Please make sure you have installed the latest versions of both R (Mac OS, Windows) and RStudio (Mac OS / Windows: choose the free version).
You can install the latest development version of expowo from GitHub using the devtools package with the following R code:
OBS.: To download the development version, you will need to have the Git software installed. And if your operating system is Microsoft Windows, you will also need to download the Rtools.
Otherwise, you will be able to install expowo more easily when it is available on CRAN, by just running the following R code:
The package’s major functions (
only require the name of the target family (or a vector with multiple
family names). These major functions work with other minor functions
getDist), with auxiliary and defensive functions to mine
the plant data. Respectively,
getGenURI mines the URI for
getNumb mines the total number of species
within any genus, and
getDist does a complete search for
native and introduced country-level distribution for any genus and
species. With this distribution, it is also possible to automatically
generate global maps according to political country and botanical
subdivision with the function
powoMap. See the examples on
how to use the expowo’s functions for mining basic
information on the global plant diversity and distribution in the
‘Articles’ section in our site.
A detailed description of the expowo’s full functionality is available here.
The expowo package is being continuously constructed. If you want to make suggestions, let us know! We hope it will be helpful for your botanical research!
Zuanny, D. & Cardoso, D. (2022). expowo: An R package for mining plant diversity and distribution data. https://github.com/DBOSlab/expowo