ppnCatchErr | R Documentation |
Like the ppnAgeErr
function, this function generates assigns multi-
variate logistic error (Schnute and Richards 1995, eqns.S.9 and S.10) to
proportions data. Here it is intended to represent error in assigning mixed
stock catches to specific stocks.
ppnCatchErr(ppnCatchVec, tau)
ppnCatchVec |
A numeric vector of proportions representing the true
relative contribution of each stock to total catch. |
tau |
A numeric specifying the parameter that represents average var- iation in proportions. |
Returns a numeric vector representing proportions for each stock.
ppnCatchVec <- c(0.2, 0.4, 0.3, 0.1)
tau <- 0.7
ppnCatchErr(ppnCatchVec, tau)
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