I got it to work:
# To get a percentile of a single-variable function:
# Step 1: Integrate over the domain to ge the normalization constant:
Z<-integrate(function(x) sqrt(1+x^-1), 1,2)$value
Z
# Step 2: Find the .975 percentile
x975<-uniroot(function(t) integrate(function(x) sqrt(1+x^-1), 1,
t)$val
On Jan 1, 2011, at 10:42 PM, Nissim Kaufmann wrote:
I would like to give a probability distribution function of a
function of
(x,y) on the half-plane y>0, and a constant 0to know
the c percentile of the marginal distribution of x. I have tried
along
the lines of the following but I keep ge
Nissim Kaufmann wrote:
>
>
> J=sapply(xc, function(xc) {integrate(function(x) {
>sapply(y, function(x) {
> integrate(function(y) {
>sapply(x, function(y) 1/(1+x^2+y^2))
> }, -c, c)$value
>})
> }, -c, xc)$value
> })
>
>
Once you are inside the first "{", R only kn
I would like to give a probability distribution function of a function of
(x,y) on the half-plane y>0, and a constant 0https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducib
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