Sets age to breast height for each species group and stores these value in the SiteData object. Can be used to minimize the number of calculations, since time to breast height is the same for all trees of a certain species (according to the function, not in reality). Not the the growth function for establised stands are based on tree data where this function has been used to add time to breast height to the breast height age.

'Declaration
 
Public Overridable Sub AssignYears( _
   ByVal siteData As SiteData _
) 

'Usage
 
Dim instance As AgeToBreastHeightElfving
Dim siteData As SiteData
 
instance.AssignYears(siteData)

public virtual void AssignYears( 
   SiteData siteData
)

public:
virtual void AssignYears( 
   SiteData^ siteData
)