Creates a raster figure cropped to the specified extent
     
    
    Usage
    raster_fig(ras, extent, title = "Title")
 
     
    
    Arguments
    - ras
 
raster::RasterLayer; A raster object.
 
- extent
 
raster::Extent; An extent object used to crop the raster.
 
- title
 
character; A title for the raster legend.