Tim Miller

#### Description: This is not likely to happen, but if a value of an unused parameter is NaN, then factor(NaN*NA) [here](https://github.com/kaskr/adcomp/blob/e499559eb805c0c8d03bc6bd036c0fb01f3c41b3/TMB/R/validation.R#L219) does not produce the right input for the map...

selectivity re="ar1" with model = "age-specific" options to prepare_wham_input function

11

selectivity$model = "age-specific" without random effects will estimate or fix each age-specific selectivity parameter (estimated as fixed effects) according to specifications of the asap3 dat file or (over-ridden by) selectivity$initial_pars...

for age-specific selectivity allow user-specified ages that share the same parameters

5

allow user to force different ages to have the same selectivity but still estimated. This can be helpful when selectivity for some ages are inestimable. It is possible outside of...

allow same selectivity blocks for different fleets/indices

1

For example, when considering LPUE or CPUE as indices may wish to use the same selectivity assumptions for the fleet and index. This came up in the Plaice research track...