Thanks Sundar
what you suggested worked fine
> You will see that "x" is a vector and "tt[i]^x" returns a vector of the
> same length. You are trying to place this vector into "a[i]" which is
> length 1. Try the following *untested* code instead:
>
> <untested>
> integrandtotest <- function(x) {
> sum(sapply(x, function(xi) sum(tt^xi)))
> }
except you are summing twice so it should be.........
integrandtotest <- function(x) {(sapply(x, function(xi) sum(tt^xi)))
Alan Brennan
Director of Health Economics and Decision Science
http://www.shef.ac.uk/scharr/sections/heds
ScHARR
School of Health and Related Research
University of Sheffield
Regent Ct
30 Regent St
Sheffield S1 4DA
Tel:+44 (0)114 2220684
Fax:+44 (0)114 2724095
e-mail:[EMAIL PROTECTED]
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