search for: myweeks

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2012 Jul 17
1
weighted mean by week
...012-07-09","2012-07-09","2012-07-16","2012-07-16")), var1=c(1,10,2,20),var2=c(10,1,20,2)) (x) # For each week in "myweek", I'd like to build a weighted mean for var1 and var2 - using "myweight" as weight. # Below is my inelegant code: myweeks<-unique(x$myweek) nr.of.weeks<-length(myweeks) myvars<-c("var1","var2") mylist<-NULL for(i in 1:nr.of.weeks){ # i<-1 out<-NULL for(var in myvars){ # var<-myvars[2] temp.x<-x[x$myweek %in% myweeks[i],c("myweight",var)] temp.out<-weig...