The function makes and saves locally a raster map using ggplot.
     
    quick_raster_map(pred_df, my_col, ttl = NULL, parms)
    Arguments
    
    
    
      | pred_df | dataframe of data. | 
    
      | my_col | colours to use for plotting. | 
    
      | ttl | character string of legend title. Default = NULL. | 
    
      | parms | list of user-defined parameters. |