library('RBBGCMuso') ## This function can be modified, it is a generator function, ## which works like this: ## meanmax_gen(4): meanmax for for the 4th year. meanmax_gen <- function(selectedYears=NULL){ function(x){ years <- rep(1:(as.integer(length(x)/365)), each=365) if(!is.null(selectedYears)){ x <- x[years %in% selectedYears] years <- years[years %in% selectedYears] } mean(tapply(x, years,function(year){ max(year) })) } } musoSensi(iteration=100,varIndex=2,fun=meanmax_gen()) settings <- setupMuso(iniInput=c(spinup="n.ini",normal="n.ini")) # I would like to do the sensitivity only for maize. settings$epcInput["normal"] <- "maize.epc" ## Select the 4th,5th year only for sensitivity ,assuming that these are the maize years ## The sensitivity will be calculated for mean of annual maximum values of LAI(varIndex = 2) musoSensi(iteration=100,varIndex=2,fun=meanmax_gen(c(4,5)))