Displaying 1 result from an estimated 1 matches for "limanda".
Did you mean:
amanda
2012 May 19
4
weighted averages for two variables
Hi R users,
I have a dataset with multiple variables and i'm trying to weigh average
depths for fish species per year by their abundance (CPUE. I have tried the
weighted.mean function but as i have two columns for the x value the lenghts
differ with the w (CPUE). How do I solve this problem?
So far I have tried this:
data<-by(allspecies, list(allspecies$Depth, allspecies$Year),