A ratio account computes the ratio of two previously defined accounts. Algebraically, the value of a ratio account is equivalent to:
ratio account = account1/account2, or
ratio account = numerator account/denominator account
Ratio accounts are useful for setting an objective for a percentage of an existing account. For example, to set an objective to maintain 5% of balsam fir area in the late seral stage, you would use a relationship similar to the following:
ratio.Seral.late.Bf = feature.Seral.late.Bf/feature.Area.total.BF
The previous example is conceptually correct, but not in the right syntax. Base on this example, the correct way to create a ratio account is:
Define the numerator and denominator accounts in
the accounts.csv file.
Define the ratio account in the PIN file.
control.addRatioAccount ("ratio.Seral.late.Bf","feature.Seral.late.Bf","feature.Area.total.BF")