dear baptiste,
thank you very much, that was excatly what i was looking for:-)
best regards
Andreas
baptiste auguie wrote:
Hi,
I think you want to Vectorize integrate(), not integrand(). Here's a
way using mapply,
integrand <- function(z)
{
return(z * z)
}
vec1<-1:3
vec2<-2:4
mapply
Hi,
I think you want to Vectorize integrate(), not integrand(). Here's a
way using mapply,
integrand <- function(z)
{
return(z * z)
}
vec1<-1:3
vec2<-2:4
mapply(integrate, lower=vec1, upper=vec2, MoreArgs=list(f=integrand) )
baptiste
On 20 Sep 2008, at 13:08, Andreas Wittmann wrote:
D
Dear R useRs,
i try to integrate the following function for many values
"integrand" <- function(z)
{
return(z * z)
}
i do this with a for-loop
for(i in 2:4)
{
z <- integrate(integrand, i-1, i)$value
cat("z", z, "\n")
}
to speed up the computation for many values i tried vectors
in integrat
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