Utility function to easily take arbitrary layer name parameters as a data frame and return the raster data from NPN Geospatial data services.
get_additional_rasters(data)
Returns a data frame containing the raster objects related to the specified layers.
Data frame with first column named 'name' and containing the names of the layer for which to retrieve data and the second column named 'param' and containing string representations of the time/elevation subset parameter to pass.