Displaying 1 result from an estimated 1 matches for "popdat".
2008 Oct 29
2
Help using tapply with multiple variables
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I want to use the tapply function to apply the pres.test function
over all countries in my data table (the real data have ~150
countries and 10 age classes), but I can't seem to get tapply to take
as input to FUN more than one variable, for example I tried:
popdat<-cbind(dat2.sub$pop1995, dat2.sub$pop2000) #try to force the
two time points into a vector form
tapply(popdat, dat2.sub$country, pres.test, ...=list(N0=popdat[,1],
N1=popdat[,2])) #tried to pass the other arguments that pres.test
needs via ...
And got the error:
Error in tapply(popdat,...