#'
#'@title Get fishery retention functions from model results from TCSAM02 model runs as a dataframe
#'
#'@description Function to get fishery retention functions from model results from TCSAM02 model runs as a dataframe.
#'
#'@param tcsams - single TCSAM02 object, TCSAM02.resLst object, or named list of the latter
#'@param verbose - flag (T/F) to print debug info
#'@param cast - casting formula for excluding y,x,m,s factor levels from an average-at-size across unspecified factors
#'
#'@return dataframe in canonical format
#'
#'@details Extracts fishery retention functions.
#'
#'@export
#'
getMDFR.Fisheries.RetFcns<-function(tcsams,verbose=FALSE,cast="y+x"){
if (verbose) cat("--rTCSAM02::getMDFR.Fisheries.RetFcns().\n");
options(stringsAsFactors=FALSE);
path<-'mp/F_list/ret_fyxmsz';
mdfr<-getMDFR(path,tcsams,verbose);
mdfr$fleet<-gsub("_"," ",mdfr$fleet,fixed=TRUE);#replace '_'s in fishery names with spaces
mdfr$z<-as.numeric(mdfr$z);
castform<-"case+process+fleet+category+type+pc&&cast+z~.";
castform<-gsub("&&cast",paste0("+",cast),castform,fixed=TRUE);
ddfr<-reshape2::dcast(mdfr,castform,fun.aggregate=mean,na.rm=TRUE,value.var='val',drop=TRUE)
ddfr[['.']]<-ifelse(ddfr[['.']]==0,NA,ddfr[['.']]);
ddfr<-ddfr[!is.na(ddfr[['.']]),];#remove NA's
mdfr<-getMDFR.CanonicalFormat(ddfr);
if (verbose) cat("--Done. \n");
return(mdfr);
}
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