-0558
URL: www.stat.purdue.edu/~mlevins
From: Bert Gunter
Sent: Thursday, June 20, 2024 1:09 PM
To: Ivan Krylov
Cc: Levine, Michael ; r-help@r-project.org
Subject: Re: [R] Integration of functions with a vector argument
You don't often get email from bgun
Phone: +1-765-496-7571
Fax: +1-765-494-0558
URL: www.stat.purdue.edu/~mlevins
From: Ivan Krylov
Sent: Thursday, June 20, 2024 11:37 AM
To: Levine, Michael
Cc: r-help@r-project.org
Subject: Re: [R] Integration of functions with a vector argument
External
The calculus package might also be relevant (not sure if it was in the Task
View):
https://cran.r-project.org/web/packages/calculus/index.html
-- Bert
On Thu, Jun 20, 2024 at 10:01 AM Bert Gunter wrote:
> If you haven't already done so, you may wish to have a look here:
>
>
> https://cran.r-pr
If you haven't already done so, you may wish to have a look here:
https://cran.r-project.org/web/views/NumericalMathematics.html#differentiation-and-integration
(Or perhaps in other related subtopics in the Numerical Math task view)
Cheers,
Bert
On Thu, Jun 20, 2024 at 8:37 AM Ivan Krylov via R
В Tue, 18 Jun 2024 23:12:03 +
"Levine, Michael" пишет:
> I have heard of several packages used for numerical integration in R -
> cubature that you mentioned, mvQuad, and pracma. My impression is
> that you think that Cubature is the best in your opinion. Is that so?
Yes, but the preference
email: mlev...@purdue.edu
Phone: +1-765-496-7571
Fax: +1-765-494-0558
URL: www.stat.purdue.edu/~mlevins
From: Ivan Krylov
Sent: Thursday, June 13, 2024 6:21 AM
To: Levine, Michael
Cc: r-help@r-project.org
Subject: Re: [R] Integration of functions with a v
В Wed, 12 Jun 2024 23:42:18 +
"Levine, Michael" пишет:
> f.int1 <- function(x,y) {Vectorize (function(y) f(c(x,y),H=H,j=j))}
Vectorize returns a callable function(y), so wrapping it in a
function(x,y) will not work. Since you'd like to integrate over y, we
can perform the same transformation
purdue.edu/~mlevins
From: Ivan Krylov
Sent: Wednesday, June 12, 2024 6:41 AM
To: Levine, Michael
Cc: r-help@r-project.org
Subject: Re: [R] Integration of functions with a vector argument
[You don't often get email from ikry...@disroot.org. Learn why this is
imp
How do you integrate perpendicular to a plane if you don't have a concept of
3d? In that direction the plane is just a point.
Vectors in R do not have any concept of "n by 1"... they are like a string of
beads. When you take a column out of a matrix `a` using indexing b <- a[,j] the
resulting v
В Tue, 11 Jun 2024 18:44:08 +
"Levine, Michael" пишет:
> Let us say we have a function
>
> F <- function(x){ body of the function}
>
> Where x is, in general, a d by 1 vector with d>1. Now I want to
> integrate out some of the coordinates of x, e.g. x[1] or x[2] or both
> of them etc. I'm
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