[FLR-list] Qs about FLStock objects

Marc Taylor marc.taylor at thuenen.de
Fri Aug 31 08:07:14 CEST 2018


I am using an FLStock object to record information from a simulation 
model that is run at monthly time increments; i.e. the @season dimension 
equals 12.

Q1. Is there a function in FLCore that can compute the yearly values 
(i.e. collapse the season dimension)? I would write one for my purposes 
if this doesn't exist, but I wanted to ask first. As far as I know, 
there are only the compute functions for specific slots (e.g. 
computeCatch), but not ones that operate on the whole object at once.

Q2. How would you recommend that I record mortality at the season (i.e. 
monthly) level: I started off at having their units be "per year" rates, 
but the default plot(stock) appears to sum the mortality values for the 
yearly time series, rather than to average them, which would suggest 
keeping them in "per season" units. This also seems to be consistent 
with the output of SMS (one sums the seasonal values to arrive at the 
yearly ones).

Hope these questions are clear for you!

Cheers, Marc

-- 
Dr. Marc Taylor
Marine Lebende Resourcen / Marine Living Resources
Thünen-Institut für Seefischerei / Thünen Institute of Sea Fisheries
Herwigstraße 31
27572 Bremerhaven, Germany

Tel:  +49 471 94460-252
Mail: marc.taylor at thuenen.de
Web:  www.thuenen.de



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