pred_cover: plot predicted cover
In crumplecup/riparian: Analyzing the Extent of Riparian Cover

Predicts cover extent within a polygon and returns the results as a raster plot

pred_cover(
  polys,
  in_path = NULL,
  out_path = NULL,
  rgb_path = NULL,
  cir_path = NULL,
  buff = sf_buff
)

`in_path`	is a character string indicating the path to a directory to rasters
`out_path`	is a character string indicating the path to the output directory
`rgb_path`	is the path to 3-band rgb data
`cir_path`	is the path to 3-band cir data
`buff`	is the 50-ft riparian buffer polygon for 'poly'
`poly`	is a spatial polygons object (taxlot or sampling box)