Hi,
rgl plots seem to require the z object in the form of a matrix. I would like
some help in constructing this matrix when I cannot use the outer function. Let
me explain.
library(rgl)
library(plot3D)
x <- 1:10
y <- 1:20
fun1 <- function (x,y) {x^2+y^2}
z <- outer(x,y, fun1)
open3d()
surface3d(x
I have now followed your advice and switched to the R-sig-debian help list.
Ravi
On Thursday, 15 May 2025 at 12:59:05 CEST, ravi wrote:
I did some googling and then ran:
> bspm::shadowed_packages()
Package LibPath Version Shadow.LibPath
Shadow.Version Shadow.Newer
bsp
I did some googling and then ran:
> bspm::shadowed_packages()
Package LibPath Version Shadow.LibPath
Shadow.Version Shadow.Newer
bspmbspm /usr/lib/R/site-library 0.5.7 /home/ravi/rvi/Rlib 0.5.7
FALSE
I have a copy of bspm in the /usr/lib/R/site-li
Thanks to Jeff and Ivan for your helpful comments.
Ravi
On Saturday, 10 May 2025 at 11:37:29 CEST, Ivan Krylov
wrote:
В Thu, 8 May 2025 19:39:40 + (UTC)
ravi via R-help пишет:
> In windows, I add the following line:
> .libPaths(c(“C:/Rownlib”,”C:/R/R-4.5.0/library”))
>
Hi,
In Windows, I follow a method with customized library locations that has worked
for me when upgrading to new R versions. I have not been able to follow the
same method in Ubuntu. I would like to have help. Let me explain.
In windows, I add the following line:
.libPaths(c(“C:/Rownlib”,”C:/R/R
9 at 19:20, ravi via R-help wrote:
>
> Hi all,I am having some difficulties in vectorizing the integrate function.
> Let me explain with an example.
> a <- 10; b <- 3; c <- 4
> f <- function(x) {exp(-a*x^3-b*x^2-c*x)}
> integrate(f,0,Inf) # works fine
>
>
_along(a)){
res_i <- res[[i]]
for(j in seq_along(b)){
res_i_j <- res_i[[j]]
for(k in seq_along(m)){
r[i, j, k] <- res_i_j[[k]]$value
r.error[i, j, k] <- res_i_j[[k]]$abs.error
}
}
}
Hope this helps,
Rui Barradas
Às 21:14 de 10/08/19, ravi via R-help escreve
Expression
Cheers,Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Sat, Aug 10, 2019 at 10:20 AM ravi via R-help wrote:
Hi all,I am
"OK" "OK" "OK" "OK"
"OK"
call Expression Expression Expression Expression Expression
Expression
Cheers,Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along a
Hi all,I am having some difficulties in vectorizing the integrate function. Let
me explain with an example.
a <- 10; b <- 3; c <- 4
f <- function(x) {exp(-a*x^3-b*x^2-c*x)}
integrate(f,0,Inf) # works fine
My difficulties start when I want to vectorize.
# attempts to vectorize fail
a <- seq(from=
5, 2019 6:18:14 AM PDT, ravi via R-help wrote:
>Hi all,On looking at the source code for the integrate function, I find
>that it has the following call:
>wk <- .External(C_call_dqagi, ff, rho = environment(),
>as.double(bound), inf, as.double(abs.tol), as.double(rel.tol),
5, 2019 6:18:14 AM PDT, ravi via R-help wrote:
>Hi all,On looking at the source code for the integrate function, I find
>that it has the following call:
>wk <- .External(C_call_dqagi, ff, rho = environment(),
>as.double(bound), inf, as.double(abs.tol), as.double(rel.tol),
Hi all,On looking at the source code for the integrate function, I find that it
has the following call:
wk <- .External(C_call_dqagi, ff, rho = environment(),
as.double(bound), inf, as.double(abs.tol), as.double(rel.tol),
limit = limit)How do I access the source code for
d command?
That's a material property, so you can just put it in as part of the
dots. For the meshes, it would go into the shade3d() call in the same
way, or the material argument to qmesh3d.
Duncan Murdoch
>
> Once again, I would like to thank you for your fantastic help.
> Th
add an alpha value to
the quad3d command?
Once again, I would like to thank you for your fantastic help.Thanking you,Ravi
On Thursday, 13 June 2019, 22:52:07 CEST, Duncan Murdoch
wrote:
On 13/06/2019 4:32 p.m., Duncan Murdoch wrote:
> On 13/06/2019 12:47 p.m., ravi via R-help wr
Hi,I want to plot a surface joining a circle on a plane with another circle (a
little offset w.r.t. the first one) on a parallel plane. This is a very
simplified version of my problem.
I will explain with the following code :
# First, I plot the two circlesorig1 <- 0.4;radius1=0.3;theta <-
seq(0
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