If a uniform sample is needed, it's fairly easy to turn my solution into
a rejection sampler that is uniform across the region satisfying the
constraints. It has an acceptance rate that is bounded below by
something like 1/factorial(dim-1), e.g. 1/6 in 4 dimensions.
Duncan Murdoch
On 2025-04-
В Fri, 25 Apr 2025 13:41:35 +
André Wildberg пишет:
> Reproducible example:
>
> addr <-
> "https://www1.ncdc.noaa.gov/pub/data/ghcn/daily/by_station/USW00014839.csv.gz";
>
>
> # online/stream
>
> nrow(read.csv(gzcon(url(addr), text=T), header=F))
>
> # [1] 1798
>
>
> # local
>
> downl
Yes, thanks. I got my algebra/constraints wrong.
... Sigh...
Unfortunatey, this seems to make things yet more difficult.
-- Bert
"An educated person is one who can entertain new ideas, entertain others,
and entertain herself."
On Sat, Apr 26, 2025 at 10:01 AM Duncan Murdoch
wrote:
> On 2025
And I missed copying one line:
sums <- rowSums(x)
should come between the calculations of x and x0.
Duncan Murdoch
On 2025-04-26 1:01 p.m., Duncan Murdoch wrote:
On 2025-04-24 3:25 p.m., Bert Gunter wrote:
Folks:
Unless my wee old brain errs (always a danger), uniform sampling from an
n-vec
On 2025-04-24 3:25 p.m., Bert Gunter wrote:
Folks:
Unless my wee old brain errs (always a danger), uniform sampling from an
n-vector for which 0 <= ai <= xi <= bi and SUM(xi) = k, a constant,
where to ensure that the constraints are consistent (and nontrivial),
SUM(ai)< k and SUM(bi) > k, is a
I used to copy and update but I found that over time my library gets
filled with packages that I don't use
so now every time a new version of R encounters a package it does not
know about I just reinstall it.
That keeps my library cleaner.
On Fri, Apr 25, 2025 at 12:17 PM Peter Dalgaard via R-help
It's still not completely clear what you intend. You should not just add a
4.4-built library to the library path under 4.5, because the API has changed.
So packages in the old library may not work, although some might work because
they don't use the parts of the API that changed. The library fol
Sorry, I am copying nothing from any folder to another folder, as per my
message. I am surprise I was not clear enough.
I have my on bash script to make a clean installation from source, but I
keep track of my bandwidth usage. So I try to make this stuff once in a
time as when I upgrade my SO v
That sounds odd and AFAICT not happening here. Virus checkers sometimes shift
things around, but not like that, I think.
It could be file system corruption, so try running "First Aid" in the Disk
Utility app.
-pd
> On 25 Apr 2025, at 23.10, Mitchell Maltenfort wrote:
>
> On a MacBook Silic
Yes. I was a little more careful about filtering out base and recommended
packages, but the former won't be on CRAN anyway and will just give off a
warning.
The recommended packages sometimes do get upgraded on CRAN and whether you want
those or the ones from the R release is a bit up in the a
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