SiteTools_HTBoredAge2SI: Calculate site index using site tools
In bcgov/BCForestGroundSample: BC forest ground sample compilation

Description Usage Arguments Value Author(s)

This function calculates site index based on bored age (boredAge), tree height (height), species (species) and region (ICRegion) using site tools program. This function is equivalent to sindex_httoage.sas.

SiteTools_HTBoredAge2SI(boredAge, height, species, ICRegion, ageType,
  estType)


  ## S4 method for signature 
## 'numeric,numeric,character,character,numeric,numeric'
SiteTools_HTBoredAge2SI(boredAge,
  height, species, ICRegion, ageType, estType)

`boredAge`	numeric, Age at bored height.
`height`	numeric, Total tree height.
`species`	character, Species code, must be consistent with the species code in site tools, which can be converted from the original species code by using `siteToolsSpeciesConvertor`.
`ICRegion`	character, Must be either `I` (interior) and `C` (coastal). IC regions can be derived using `BEC2IC`.
`ageType`	numeric, Must be either `0` or `1`. `0` stands for total age, for which site index is calculated for 50 years of total tree age. While `1` stands for breast height age, for which site index is calculated for 50 year old at breast height.
`estType`	numeric, Defines how the site tools estimate site index. Valued as `0` and `1`, `0` is interative and while `1` is directive. Default is `1`, which is directive.