On 5/21/2008 4:52 PM, Sharai Gomez-Raygoza wrote:
Hi!!!
I am trying to run a bootstrap but I have troubles. My code is as follows
theta <- function(x){mean(x,)}
boot1<-boot(x,theta,R=1000)
Error in statistic(data, original, ...) : unused argument(s) (1:487)
Any help is welcome
Thanks
When sim="ordinary" (the default), the statistic argument to boot()
should have at least two arguments. Try revising your theta function
along those lines:
library(boot)
X <- rnorm(1000)
theta <- function(x, index){mean(x[index])}
boot(X, theta, R=1000)
ORDINARY NONPARAMETRIC BOOTSTRAP
Call:
boot(data = X, statistic = theta, R = 1000)
Bootstrap Statistics :
original bias std. error
t1* -0.003371328 -0.001429037 0.03195157
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