Appendix A. Model Specification
Model Variables
| Variable | Symbol | Type | Description |
|---|---|---|---|
| styr | t | int | start year |
| endyr | t | int | end year |
| tstep | NA | double | time step |
| ndata | int | number of data groups | |
| nsex | s | int | number of sexes |
| nshell | v | int | number of shell conditions |
| nmature | m | int | number of maturity states |
| nclass | l | int | number of size classes in the model |
| ncol | int | number of columns in N-matrix |
The numbers-at-size in the first year are initialized using an initial mean recruitment R, natural mortality, the size transition matrix, and a vector of deviations for each size class that represents recruitment variability prior to the initial start year of the model.
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