[R] boot & boot.ci

[Kuba]

Dear all, 
   I've a problem with bootstarp package... I want to bootstrap 
correlation ratio of some data. 
 my code is:
 f<-function(d) cov(d$x,d$y)/sqrt(var(x)*var(y)) 
 boot(d,f,R) 
 
 As a result I got an error: 
 Error in statistic(data, original, ...) : unused argument(s) (.. 
 .) 
 
 d is a data.frame containing two vectors with labels x and y. 
 
 Also, another thing I have problem with is generating the 
confidence interval using boot.ci 
 
 if I write: 
 d.boot<-boot(d,cor,R) 
 boot.ci(d.boot,conf=0.95,type="bca") 
 
 I get an error: 
 Error in bca.ci(boot.out, conf, index[1], L = L, t = t.o, t0 = 
 t0.o, h = h,  : 
         estimated adjustment 'a' is NA 
 
 Last question is how to generate a studentized intervals for 
 such data? 
 
 Thanks, 
 Kuba

Kuba

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