Ralf Stubner
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R (25)
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package (19)

Posts

Posts from the R category are syndicated on R Bloggers.

Mastodon author attribution for a Quarto blog

Mastodon
Quarto
Now that Mastodon 4.3 has been released, it makes sense to think about one of the new features there: Author attribution. The idea is, that when a link from a website is…
Oct 15, 2024
Ralf Stubner

Algorithms for weighted sampling without replacement (Part 1)

RNG
R
Some time ago I learned from a blog post by Thomas Lumley that R uses “sequential sampling” when using weighted sampling without replacement. As a consequence, the…
Sep 9, 2024
Ralf Stubner

 

Using tikzDevice with Quarto documents

R
CRAN
package
LaTeX
Quarto
Recently Esther posted about something that is dear to my heart. Keeping fonts in sync between text and graphics:
Aug 4, 2024
Ralf Stubner

 

dqrng v0.4.1

R
CRAN
package
Only two weeks after version 0.4.0 I had to publish version 0.4.1 of dqrng on CRAN.
May 29, 2024
Ralf Stubner

dqrng v0.4.0

R
CRAN
package
Today dqrng version 0.4.0 has been published on CRAN and is now propagating through the mirrors. At the moment we are still working through some breakage with reverse…
May 15, 2024
Ralf Stubner

 

Upcoming changes in dqrng

R
CRAN
package
The next version of dqrng is going to include many changes, so it might make sense to start blogging about them before the actual release. This release will be version 0.4.0…
Apr 23, 2024
Ralf Stubner

 

Migrating to quarto

R
Quarto
Late to the party I have also migrated my blog to Quarto:
Jan 6, 2024
Ralf Stubner

 

Bug fixes for dqrng and tikzDevice

CRAN
R
package
Today dqrng version 0.3.2 made it unto CRAN and is now propagating to the mirrors. In addition tikzDevice version 0.12.6 made it unto CRAN as well. Both releases are minor…
Nov 29, 2023
Ralf Stubner

Algorithms for unweighted sampling without replacement

R
RNG
Numerics
package
I am currently working on weighted sampling for dqrng, c.f. #72, for which also have to decide on the algorithm(s) to use for weighted sampling without replacement. Before…
Oct 22, 2023
Ralf Stubner

Using dqrng as user-supplied RNG

R
RNG
package
My dqrng package has some quite old issues, one is “More distribution functions” where I brought forward the idea to support additional distribution functions within dqrng…
Sep 24, 2023
Ralf Stubner

Roulette-wheel selection for dqrng (part 2)

R
RNG
package
I have blogged about weighted sampling before. There I found that the stochastic acceptance method suggested by Lipowski and Lipowska (2012) (also at https://arxiv.org/abs/11…
Sep 10, 2023
Ralf Stubner

Choosing a new default RNG for dqrng

R
RNG
package
Currently the dqrng package supports only xoroshiro128+ and xoshiro256+ from https://prng.di.unimi.it/ (see also Blackman and Vigna 2021). These RNGs should only be used for…
Sep 9, 2023
Ralf Stubner

 

dqrng v0.3.1 and tikzDevice v0.12.5

CRAN
package
R
Today dqrng version 0.3.1 made it unto CRAN and is now propagating to the mirrors.
Aug 30, 2023
Ralf Stubner

 

swephR v0.3.1

CRAN
package
R
This morning swephR version 0.3.1 made it unto CRAN and is now propagating to the mirrors.
May 8, 2023
Ralf Stubner

 

Share on Mastodon using Tootpick

Mastodon
In addition to other social media sites I wanted to enable sharing on Mastodon as well. The main difficulty is that as part of the Fediverse there is no central server that…
Feb 10, 2023
Ralf Stubner

 

tikzDevice v0.12.4

R
package
LaTeX
CRAN
Yesterday tikzDevice version 0.12.4 made it unto CRAN and is now propagating to the mirrors.
Feb 10, 2023
Ralf Stubner

Roulette-wheel selection for dqrng

R
RNG
package
There is a long standing issue with my {dqrng} package: weighted sampling. Since implementing fast un-weighted sampling methods quite some time ago, I have now started…
Dec 29, 2022
Ralf Stubner

 

dqrng v0.3.0

package
R
RNG
Today dqrng version 0.3.0 made it unto CRAN and is now propagating to the mirrors.
May 1, 2021
Ralf Stubner

 

swephR v0.3.0

CRAN
package
R
This afternoon swephR version 0.3.0 made it unto CRAN and is now propagating to the mirrors.
Aug 28, 2019
Ralf Stubner

 

tikzDevice v0.12.3

R
package
LaTeX
CRAN
Yesterday tikzDevice version 0.12.3 made it unto CRAN and is now propagating to the mirrors.
Aug 8, 2019
Ralf Stubner

XY problems

C++
R
Rcpp
One can easily fall for an XY problem even when one tries to avoid it.
Aug 2, 2019
Ralf Stubner

 

Numerical integration over an infinite interval in Rcpp (part 2)

R
Numerics
Rcpp
In a previous post I have shown that without intervention RcppNumerical does not handle integration over infinite ranges. In this post I want to generalize the method to integrals where only one of the limits is infinite. In addition, I want to make it more user friendly.
Jul 12, 2019
Ralf Stubner

 

swephR v0.2.1

R
package
This morning swephR version 0.2.1 made it unto CRAN and is now propagating to the mirrors.
Jul 8, 2019
Ralf Stubner

 

swephR v0.2.0

R
package
This morning swephR version 0.2.0 made it unto CRAN and is now propagating to the mirrors.
Jul 5, 2019
Ralf Stubner

Numerical integration over an infinite interval in Rcpp

R
Rcpp
Numerics
C++
On Stack Overflow the question was asked how to numerically integrate a function over a infinite range in Rcpp, e.g. by using RcppNumerical. As an example, the integral
Jul 3, 2019
Ralf Stubner

 

RcppArrayFire v0.1.0: Sparse Matrices and support for Mac OS

R
ArrayFire
GPU
package
The RcppArrayFire package provides an interface from R to and from the ArrayFire library, an open source library that can make use of GPUs and other hardware accelerators…
Jun 28, 2019
Ralf Stubner

 

Using qpdfview with AUCTeX

emacs
LaTeX
AUCTeX
I recently set up a new computer using Debian Buster with LXQt as desktop environment, which uses qpdfview as default PDF viewer. Obviously I wanted to make use of it when…
Jun 5, 2019
Ralf Stubner

 

dqrng v0.2.1

R
RNG
I have blogged about dqrng before, but I forgot to write about the v0.2.0 release, even though that brought a lot of changes including the fast sampling methods to CRAN:
May 17, 2019
Ralf Stubner
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