Extrapolate Horvitz-Thompson abundance estimates to entire surveyed region
     
    
    Usage
    survey.region.dht(Nhat.by.sample, samples, width, left, point, areas.supplied)
 
    
    Arguments
- Nhat.by.sample
- dataframe of abundance by sample 
- samples
- samples table 
- width
- truncation width 
- left
- left truncation if any 
- point
- if TRUE point count otherwise line transect 
- areas.supplied
- if - TRUE, covered area is extracted from the- CoveredAreacolumn of- Nhat.by.sample
 
 
    
    Value
    Revised Nhat.by.sample dataframe containing estimates extrapolated
  to survey region
     
    
    Note
    Internal function called by dht and related functions.
     
    
    Author
    Jeff Laake and David L Miller