R.utils (>= 2.4.0), stats, utils, raster, rgdal
biomod2, dismo, testthat, knitr, rmarkdown
ggplot2, reshape2, testthat, knitr, rmarkdown
ggplot2, reshape2, testthat, knitr, rmarkdown, httr
ggplot2, reshape2, testthat, knitr, rmarkdown, httr, httr2