Hello,
I'm running R 1.8.1 on a Mac G4 with Dual 800 MHz CPU, 1.5 GB RAM, and sufficient disk space.
I have loaded the boot package version 1.2-15.
I defined a function to pass to the statistic argument which estimates a vector (length = 6) of parameter estimates; none are variances.
I defined a function to pass to the ran.gen argument for parametric resampling.
I created a boot object with R = 10000; the boot object appears to have the appropriate components of a parametric bootstrap object.
When I pass the boot object to the boot.ci function I can get CIs of types = norm, basic, and perc on each parameter estimate.
However, bca CIs are not returned and there is the following error message:
Error in empinf(boot.out, index = index, t = t.o, ...) : Influence values cannot be found from a parametric bootstrap
To knowledge I should be able to get bca CIs on a parametric bootstrap object.
Any suggestions?
Nathan
Nathan Leon Pace, MD, MStat Work:[EMAIL PROTECTED] Department of Anesthesiology Home:[EMAIL PROTECTED] University of Utah Work:801.581.6393 Salt Lake City, Utah Home:801.467.2925 Fax:801.581.4367 Cell:801.558.3987
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