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2007 Aug 23
1
Expedite scalar f(x) evaluation over vectors
Dear R community,
I am trying to code a fairly complex equation for optim(). My current
approach is too slow for optim().
I have a function that takes a double integral (hopefully correctly) across
two terms, e.g.,
doubleint <- function(c1,c2) {integrate(function(y) {
sapply(y, function(y) {
integrate(function(x) {a*(c1+x)+b*(c2+x)}, boundsx[1], boundsx[2])$value
})
},
2007 Aug 23
1
Clarification: Expedite scalar f(x) evaluation over vectors
Please note clarifications in <<>> below. My apologies for any confusion.
Thanks again,
Scott
---------- Forwarded message ----------
From: Scott Stark <stark.sc@gmail.com>
Date: Aug 23, 2007 1:03 PM
Subject: Expedite scalar f(x) evaluation over vectors
To: r-help@lists.r-project.org
Dear R community,
I am trying to code a fairly complex equation for optim(). My current